Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Hi Jason,

I have made a draft of my proposal 
https://docs.google.com/document/d/13hmPNM2JdEhnMhctH5hsbuTOnA0916WUvrFOzvb98ig/edit?pli=1,
 
Most of examples were added from here:   
https://github.com/moorepants/learn-multibody-dynamics/pull/57, could you 
please provide your feedback on my proposal since there is only 4 days left 
for deadline.

Thanks,
Praneeth

On Monday, April 11, 2022 at 10:51:13 AM UTC+5:30 praneeth ratna wrote:

> Jason,
>
> I'm sorry for mailing again but I am not yet sure of the implementation - 
> 'We need valid mathematical descriptions of a variety of common forces that 
> will work nicely with our code generators for efficient numerical 
> implementations'. I do not have a clear understanding of how force should 
> be implemented as mentioned by you, could you please help me out here?
>
> Thanks,
> Praneeth
>
> On Saturday, April 9, 2022 at 2:44:50 PM UTC+5:30 praneeth ratna wrote:
>
>> Jason,
>>
>> Thanks for the reply,
>>
>> I have started writing my proposal, But have some queries regarding the 
>> implementation.
>> I have created a new submodule forces.py in sympy.mechanics module and 
>> create force definitons in forces.py. I have included code for one of the 
>> model here:
>> def linear_hooke_contact_model(stiffness, penetration):
>> stiffness = sm.sympify(stiffness)
>> penetration = sm.sympify(penetration)
>> force = stiffness * penetration
>> return [force]
>>
>> Is this the write way of creating the force models, or do we need to 
>> create classes for individual force model? Please correct me here if I'm 
>> wrong
>>
>> Thanks, 
>> Praneeth
>>
>> On Wednesday, April 6, 2022 at 2:09:17 PM UTC+5:30 moore...@gmail.com 
>> wrote:
>>
>>> Praneeth,
>>>
>>> We volunteer our time and will reply when and if we can.
>>>
>>> Your list of forces looks interesting and useful. I recommend reading 
>>> the force related sections of Kane & Levinson 1985, as those would be 
>>> obvious places to take forces ideas from. I'm currently writing a force 
>>> chapter in my book that has some examples (these are still in draft form 
>>> and likely incorrect): 
>>> https://github.com/moorepants/learn-multibody-dynamics/pull/57
>>>
>>> There should be no need for a system or anything from pydy. We need 
>>> valid mathematical descriptions of a variety of common forces that will 
>>> work nicely with our code generators for efficient numerical 
>>> implementations.
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791 <(530)%20601-9791>
>>>
>>>
>>> On Tue, Apr 5, 2022 at 3:48 PM praneeth ratna  
>>> wrote:
>>>
 Hi jason,

 Could you please provide your feedback on my previous two emails, So 
 that I can start writing my proposal and since there isn't much time left 
 for proposal deadline.

 Thanks,
 Praneeth

 On Monday, April 4, 2022 at 11:38:48 AM UTC+5:30 praneeth ratna wrote:

> Jason,
>
> Regarding the implementation, do you suggest similar to pydy engine? 
> So we also need to  create a System 
>  class similar to 
> the one pydy has? Also could you suggest any sources for some trivial 
> cases 
> of muscle force, actuator force and aerodynamic force models, could you 
> provide feedback on whether the model specified in my previous mail are 
> useful or not, so that i can include them in my proposal.
>
> Thanks,
> Praneeth
> On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:
>
>> Hi jason,
>>
>> I have at present written down the following models:
>>
>>1. Linear hooke contact model 
>>2. Non linear hertz model
>>3. Linear Kelvin-Voigt Contact Model 
>>4. Nonlinear Hunt and Crossley Contact Model 
>>5. Nonlinear Hunt and Crossley Contact Model 
>>6. Nonlinear Flores et al. Contact Model
>>7. multi_mass_spring_damper() 
>>
>> 
>>8. n_link_pendulum_on_cart() 
>>
>> 
>>
>> 7 and 8 are taken from pydy, are they non trivial cases? Also could 
>> you suggest any resources for muscle force, actuator force and 
>> aerodynamic 
>> force models which are useful for the user?
>> I have taken 1 to 6 from the here 
>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
>>  
>> are they useful cases?
>>
>> Thanks,
>> Praneeth
>>
>> On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com 
>> wrote:
>>
>>> Praneeth,
>>>
>>> Yes we should have a linear spring and damper force that is premade, 
>>> but that is really just a trivial case. The GSoC project should be 
>>> focused 
>>> 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Jason,

I'm sorry for mailing again but I am not yet sure of the implementation - 
'We need valid mathematical descriptions of a variety of common forces that 
will work nicely with our code generators for efficient numerical 
implementations'. I do not have a clear understanding of how force should 
be implemented as mentioned by you, could you please help me out here?

Thanks,
Praneeth

On Saturday, April 9, 2022 at 2:44:50 PM UTC+5:30 praneeth ratna wrote:

> Jason,
>
> Thanks for the reply,
>
> I have started writing my proposal, But have some queries regarding the 
> implementation.
> I have created a new submodule forces.py in sympy.mechanics module and 
> create force definitons in forces.py. I have included code for one of the 
> model here:
> def linear_hooke_contact_model(stiffness, penetration):
> stiffness = sm.sympify(stiffness)
> penetration = sm.sympify(penetration)
> force = stiffness * penetration
> return [force]
>
> Is this the write way of creating the force models, or do we need to 
> create classes for individual force model? Please correct me here if I'm 
> wrong
>
> Thanks, 
> Praneeth
>
> On Wednesday, April 6, 2022 at 2:09:17 PM UTC+5:30 moore...@gmail.com 
> wrote:
>
>> Praneeth,
>>
>> We volunteer our time and will reply when and if we can.
>>
>> Your list of forces looks interesting and useful. I recommend reading the 
>> force related sections of Kane & Levinson 1985, as those would be obvious 
>> places to take forces ideas from. I'm currently writing a force chapter in 
>> my book that has some examples (these are still in draft form and likely 
>> incorrect): 
>> https://github.com/moorepants/learn-multibody-dynamics/pull/57
>>
>> There should be no need for a system or anything from pydy. We need valid 
>> mathematical descriptions of a variety of common forces that will work 
>> nicely with our code generators for efficient numerical implementations.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Tue, Apr 5, 2022 at 3:48 PM praneeth ratna  
>> wrote:
>>
>>> Hi jason,
>>>
>>> Could you please provide your feedback on my previous two emails, So 
>>> that I can start writing my proposal and since there isn't much time left 
>>> for proposal deadline.
>>>
>>> Thanks,
>>> Praneeth
>>>
>>> On Monday, April 4, 2022 at 11:38:48 AM UTC+5:30 praneeth ratna wrote:
>>>
 Jason,

 Regarding the implementation, do you suggest similar to pydy engine? So 
 we also need to  create a System 
  class similar to 
 the one pydy has? Also could you suggest any sources for some trivial 
 cases 
 of muscle force, actuator force and aerodynamic force models, could you 
 provide feedback on whether the model specified in my previous mail are 
 useful or not, so that i can include them in my proposal.

 Thanks,
 Praneeth
 On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:

> Hi jason,
>
> I have at present written down the following models:
>
>1. Linear hooke contact model 
>2. Non linear hertz model
>3. Linear Kelvin-Voigt Contact Model 
>4. Nonlinear Hunt and Crossley Contact Model 
>5. Nonlinear Hunt and Crossley Contact Model 
>6. Nonlinear Flores et al. Contact Model
>7. multi_mass_spring_damper() 
>
> 
>8. n_link_pendulum_on_cart() 
>
> 
>
> 7 and 8 are taken from pydy, are they non trivial cases? Also could 
> you suggest any resources for muscle force, actuator force and 
> aerodynamic 
> force models which are useful for the user?
> I have taken 1 to 6 from the here 
> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
>  
> are they useful cases?
>
> Thanks,
> Praneeth
>
> On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com 
> wrote:
>
>> Praneeth,
>>
>> Yes we should have a linear spring and damper force that is premade, 
>> but that is really just a trivial case. The GSoC project should be 
>> focused 
>> primarily on adding non-trivial forces.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna  
>> wrote:
>>
>>> Hi jason,
>>>
>>> I have gone through the examples of pydy and your courses that you 
>>> have mentioned. For example: Here 
>>> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, 
>>> the plan is to implement the same thing in a class so that user can 
>>> call 
>>> the linear spring damper object whenever it is 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Jason,

Thanks for the reply,

I have started writing my proposal, But have some queries regarding the 
implementation.
I have created a new submodule forces.py in sympy.mechanics module and 
create force definitons in forces.py. I have included code for one of the 
model here:
def linear_hooke_contact_model(stiffness, penetration):
stiffness = sm.sympify(stiffness)
penetration = sm.sympify(penetration)
force = stiffness * penetration
return [force]

Is this the write way of creating the force models, or do we need to create 
classes for individual force model? Please correct me here if I'm wrong

Thanks, 
Praneeth

On Wednesday, April 6, 2022 at 2:09:17 PM UTC+5:30 moore...@gmail.com wrote:

> Praneeth,
>
> We volunteer our time and will reply when and if we can.
>
> Your list of forces looks interesting and useful. I recommend reading the 
> force related sections of Kane & Levinson 1985, as those would be obvious 
> places to take forces ideas from. I'm currently writing a force chapter in 
> my book that has some examples (these are still in draft form and likely 
> incorrect): https://github.com/moorepants/learn-multibody-dynamics/pull/57
>
> There should be no need for a system or anything from pydy. We need valid 
> mathematical descriptions of a variety of common forces that will work 
> nicely with our code generators for efficient numerical implementations.
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Tue, Apr 5, 2022 at 3:48 PM praneeth ratna  
> wrote:
>
>> Hi jason,
>>
>> Could you please provide your feedback on my previous two emails, So that 
>> I can start writing my proposal and since there isn't much time left for 
>> proposal deadline.
>>
>> Thanks,
>> Praneeth
>>
>> On Monday, April 4, 2022 at 11:38:48 AM UTC+5:30 praneeth ratna wrote:
>>
>>> Jason,
>>>
>>> Regarding the implementation, do you suggest similar to pydy engine? So 
>>> we also need to  create a System 
>>>  class similar to 
>>> the one pydy has? Also could you suggest any sources for some trivial cases 
>>> of muscle force, actuator force and aerodynamic force models, could you 
>>> provide feedback on whether the model specified in my previous mail are 
>>> useful or not, so that i can include them in my proposal.
>>>
>>> Thanks,
>>> Praneeth
>>> On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:
>>>
 Hi jason,

 I have at present written down the following models:

1. Linear hooke contact model 
2. Non linear hertz model
3. Linear Kelvin-Voigt Contact Model 
4. Nonlinear Hunt and Crossley Contact Model 
5. Nonlinear Hunt and Crossley Contact Model 
6. Nonlinear Flores et al. Contact Model
7. multi_mass_spring_damper() 

 
8. n_link_pendulum_on_cart() 

 

 7 and 8 are taken from pydy, are they non trivial cases? Also could you 
 suggest any resources for muscle force, actuator force and aerodynamic 
 force models which are useful for the user?
 I have taken 1 to 6 from the here 
 https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
  
 are they useful cases?

 Thanks,
 Praneeth

 On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com 
 wrote:

> Praneeth,
>
> Yes we should have a linear spring and damper force that is premade, 
> but that is really just a trivial case. The GSoC project should be 
> focused 
> primarily on adding non-trivial forces.
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna  
> wrote:
>
>> Hi jason,
>>
>> I have gone through the examples of pydy and your courses that you 
>> have mentioned. For example: Here 
>> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, 
>> the plan is to implement the same thing in a class so that user can call 
>> the linear spring damper object whenever it is required and use 
>> numerical 
>> methods that can operate on force objects, is it the right thing? Also 
>> is 
>> there any priority for forces that should be implemented first since 
>> there 
>> many kinds of forces to be implemented.
>>
>> Thanks,
>> Praneeth
>>
>> On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com 
>> wrote:
>>
>>> Praneeth,
>>>
>>> Checking out examples in pydy, sympy, and my various courses (MAE 
>>> 223, ENG122, ME41055) are also good locations.
>>>
>>>
>>> Jason
>>> moorepants.info
>>> +01 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Jason Moore]

Praneeth,

We volunteer our time and will reply when and if we can.

Your list of forces looks interesting and useful. I recommend reading the
force related sections of Kane & Levinson 1985, as those would be obvious
places to take forces ideas from. I'm currently writing a force chapter in
my book that has some examples (these are still in draft form and likely
incorrect): https://github.com/moorepants/learn-multibody-dynamics/pull/57

There should be no need for a system or anything from pydy. We need valid
mathematical descriptions of a variety of common forces that will work
nicely with our code generators for efficient numerical implementations.

Jason
moorepants.info
+01 530-601-9791


On Tue, Apr 5, 2022 at 3:48 PM praneeth ratna 
wrote:

> Hi jason,
>
> Could you please provide your feedback on my previous two emails, So that
> I can start writing my proposal and since there isn't much time left for
> proposal deadline.
>
> Thanks,
> Praneeth
>
> On Monday, April 4, 2022 at 11:38:48 AM UTC+5:30 praneeth ratna wrote:
>
>> Jason,
>>
>> Regarding the implementation, do you suggest similar to pydy engine? So
>> we also need to  create a System
>>  class similar to the
>> one pydy has? Also could you suggest any sources for some trivial cases of
>> muscle force, actuator force and aerodynamic force models, could you
>> provide feedback on whether the model specified in my previous mail are
>> useful or not, so that i can include them in my proposal.
>>
>> Thanks,
>> Praneeth
>> On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:
>>
>>> Hi jason,
>>>
>>> I have at present written down the following models:
>>>
>>>1. Linear hooke contact model
>>>2. Non linear hertz model
>>>3. Linear Kelvin-Voigt Contact Model
>>>4. Nonlinear Hunt and Crossley Contact Model
>>>5. Nonlinear Hunt and Crossley Contact Model
>>>6. Nonlinear Flores et al. Contact Model
>>>7. multi_mass_spring_damper()
>>>
>>> 
>>>8. n_link_pendulum_on_cart()
>>>
>>> 
>>>
>>> 7 and 8 are taken from pydy, are they non trivial cases? Also could you
>>> suggest any resources for muscle force, actuator force and aerodynamic
>>> force models which are useful for the user?
>>> I have taken 1 to 6 from the here
>>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
>>> are they useful cases?
>>>
>>> Thanks,
>>> Praneeth
>>>
>>> On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com
>>> wrote:
>>>
 Praneeth,

 Yes we should have a linear spring and damper force that is premade,
 but that is really just a trivial case. The GSoC project should be focused
 primarily on adding non-trivial forces.

 Jason
 moorepants.info
 +01 530-601-9791 <(530)%20601-9791>


 On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna 
 wrote:

> Hi jason,
>
> I have gone through the examples of pydy and your courses that you
> have mentioned. For example: Here
> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html,
> the plan is to implement the same thing in a class so that user can call
> the linear spring damper object whenever it is required and use numerical
> methods that can operate on force objects, is it the right thing? Also is
> there any priority for forces that should be implemented first since there
> many kinds of forces to be implemented.
>
> Thanks,
> Praneeth
>
> On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com
> wrote:
>
>> Praneeth,
>>
>> Checking out examples in pydy, sympy, and my various courses (MAE
>> 223, ENG122, ME41055) are also good locations.
>>
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Fri, Mar 25, 2022 at 9:00 AM Jason Moore 
>> wrote:
>>
>>> Hi Praneeth,
>>>
>>> I recommend looking at force types in various physics engines to get
>>> ideas. The rest would really come from academic papers and text books.
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791 <(530)%20601-9791>
>>>
>>>
>>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
>>> wrote:
>>>
 Hi all,

 I have already posted regarding my interest in the idea *Implementing
 Specific Forces and Torque objects *but have not recieved any
 reply yet,Could the potential mentor please guide me on what has to be 
 done
 in this project and some resources, so that I can start working on my
 proposal since there isn't much time left.

 Thanks,
 Praneeth

 On 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Hi jason,

Could you please provide your feedback on my previous two emails, So that I 
can start writing my proposal and since there isn't much time left for 
proposal deadline.

Thanks,
Praneeth

On Monday, April 4, 2022 at 11:38:48 AM UTC+5:30 praneeth ratna wrote:

> Jason,
>
> Regarding the implementation, do you suggest similar to pydy engine? So we 
> also need to  create a System 
>  class similar to the 
> one pydy has? Also could you suggest any sources for some trivial cases of 
> muscle force, actuator force and aerodynamic force models, could you 
> provide feedback on whether the model specified in my previous mail are 
> useful or not, so that i can include them in my proposal.
>
> Thanks,
> Praneeth
> On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:
>
>> Hi jason,
>>
>> I have at present written down the following models:
>>
>>1. Linear hooke contact model 
>>2. Non linear hertz model
>>3. Linear Kelvin-Voigt Contact Model 
>>4. Nonlinear Hunt and Crossley Contact Model 
>>5. Nonlinear Hunt and Crossley Contact Model 
>>6. Nonlinear Flores et al. Contact Model
>>7. multi_mass_spring_damper() 
>>
>> 
>>8. n_link_pendulum_on_cart() 
>>
>> 
>>
>> 7 and 8 are taken from pydy, are they non trivial cases? Also could you 
>> suggest any resources for muscle force, actuator force and aerodynamic 
>> force models which are useful for the user?
>> I have taken 1 to 6 from the here 
>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
>>  
>> are they useful cases?
>>
>> Thanks,
>> Praneeth
>>
>> On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com 
>> wrote:
>>
>>> Praneeth,
>>>
>>> Yes we should have a linear spring and damper force that is premade, but 
>>> that is really just a trivial case. The GSoC project should be focused 
>>> primarily on adding non-trivial forces.
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791 <(530)%20601-9791>
>>>
>>>
>>> On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna  
>>> wrote:
>>>
 Hi jason,

 I have gone through the examples of pydy and your courses that you have 
 mentioned. For example: Here 
 https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, 
 the plan is to implement the same thing in a class so that user can call 
 the linear spring damper object whenever it is required and use numerical 
 methods that can operate on force objects, is it the right thing? Also is 
 there any priority for forces that should be implemented first since there 
 many kinds of forces to be implemented.

 Thanks,
 Praneeth

 On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com 
 wrote:

> Praneeth,
>
> Checking out examples in pydy, sympy, and my various courses (MAE 223, 
> ENG122, ME41055) are also good locations.
>
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  
> wrote:
>
>> Hi Praneeth,
>>
>> I recommend looking at force types in various physics engines to get 
>> ideas. The rest would really come from academic papers and text books.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna  
>> wrote:
>>
>>> Hi all,
>>>
>>> I have already posted regarding my interest in the idea *Implementing 
>>> Specific Forces and Torque objects *but have not recieved any reply 
>>> yet,Could the potential mentor please guide me on what has to be done 
>>> in 
>>> this project and some resources, so that I can start working on my 
>>> proposal 
>>> since there isn't much time left.
>>>
>>> Thanks, 
>>> Praneeth
>>>
>>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna 
>>> wrote:
>>>
 Hey!

 While going through the GSOC 2022 ideas I have come across the idea 
 of Implementing Specific Forces and Torque objects which i found 
 interesting. There are many possible examples mentioned by Jason K. 
 Moore. 
 And I'm able to find a resource for contact force models : 
 https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
  
 which i found useful. Are there any resources for the examples 
 mentioned in 
 issue which can helpful for understanding the implementation of 
 concept 
 other than contact force models?

 I'm thinking of adding different classes for 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Jason,

Regarding the implementation, do you suggest similar to pydy engine? So we 
also need to  create a System 
 class similar to the 
one pydy has? Also could you suggest any sources for some trivial cases of 
muscle force, actuator force and aerodynamic force models, could you 
provide feedback on whether the model specified in my previous mail are 
useful or not, so that i can include them in my proposal.

Thanks,
Praneeth
On Monday, March 28, 2022 at 4:22:26 PM UTC+5:30 praneeth ratna wrote:

> Hi jason,
>
> I have at present written down the following models:
>
>1. Linear hooke contact model 
>2. Non linear hertz model
>3. Linear Kelvin-Voigt Contact Model 
>4. Nonlinear Hunt and Crossley Contact Model 
>5. Nonlinear Hunt and Crossley Contact Model 
>6. Nonlinear Flores et al. Contact Model
>7. multi_mass_spring_damper() 
>
> 
>8. n_link_pendulum_on_cart() 
>
> 
>
> 7 and 8 are taken from pydy, are they non trivial cases? Also could you 
> suggest any resources for muscle force, actuator force and aerodynamic 
> force models which are useful for the user?
> I have taken 1 to 6 from the here 
> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
>  
> are they useful cases?
>
> Thanks,
> Praneeth
>
> On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com 
> wrote:
>
>> Praneeth,
>>
>> Yes we should have a linear spring and damper force that is premade, but 
>> that is really just a trivial case. The GSoC project should be focused 
>> primarily on adding non-trivial forces.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna  
>> wrote:
>>
>>> Hi jason,
>>>
>>> I have gone through the examples of pydy and your courses that you have 
>>> mentioned. For example: Here 
>>> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, 
>>> the plan is to implement the same thing in a class so that user can call 
>>> the linear spring damper object whenever it is required and use numerical 
>>> methods that can operate on force objects, is it the right thing? Also is 
>>> there any priority for forces that should be implemented first since there 
>>> many kinds of forces to be implemented.
>>>
>>> Thanks,
>>> Praneeth
>>>
>>> On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com 
>>> wrote:
>>>
 Praneeth,

 Checking out examples in pydy, sympy, and my various courses (MAE 223, 
 ENG122, ME41055) are also good locations.


 Jason
 moorepants.info
 +01 530-601-9791 <(530)%20601-9791>


 On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  wrote:

> Hi Praneeth,
>
> I recommend looking at force types in various physics engines to get 
> ideas. The rest would really come from academic papers and text books.
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna  
> wrote:
>
>> Hi all,
>>
>> I have already posted regarding my interest in the idea *Implementing 
>> Specific Forces and Torque objects *but have not recieved any reply 
>> yet,Could the potential mentor please guide me on what has to be done in 
>> this project and some resources, so that I can start working on my 
>> proposal 
>> since there isn't much time left.
>>
>> Thanks, 
>> Praneeth
>>
>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna 
>> wrote:
>>
>>> Hey!
>>>
>>> While going through the GSOC 2022 ideas I have come across the idea 
>>> of Implementing Specific Forces and Torque objects which i found 
>>> interesting. There are many possible examples mentioned by Jason K. 
>>> Moore. 
>>> And I'm able to find a resource for contact force models : 
>>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>>>  
>>> which i found useful. Are there any resources for the examples 
>>> mentioned in 
>>> issue which can helpful for understanding the implementation of concept 
>>> other than contact force models?
>>>
>>> I'm thinking of adding different classes for different type of force 
>>> models and torques and that can be used to create a force object or 
>>> torque 
>>> object of that type also numerical methods can be added to individual 
>>> classes.
>>>
>>> I would request Jason K. Moore to guide me on how to move forward in 
>>> this project, regarding the implementation and about what all kinds of 
>>> forces and torques should be implemented so that i 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Hi jason,

I have at present written down the following models:

   1. Linear hooke contact model 
   2. Non linear hertz model
   3. Linear Kelvin-Voigt Contact Model 
   4. Nonlinear Hunt and Crossley Contact Model 
   5. Nonlinear Hunt and Crossley Contact Model 
   6. Nonlinear Flores et al. Contact Model
   7. multi_mass_spring_damper() 
   

   8. n_link_pendulum_on_cart() 
   

   
7 and 8 are taken from pydy, are they non trivial cases? Also could you 
suggest any resources for muscle force, actuator force and aerodynamic 
force models which are useful for the user?
I have taken 1 to 6 from the 
here 
https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics,
 
are they useful cases?

Thanks,
Praneeth

On Saturday, March 26, 2022 at 1:08:09 PM UTC+5:30 moore...@gmail.com wrote:

> Praneeth,
>
> Yes we should have a linear spring and damper force that is premade, but 
> that is really just a trivial case. The GSoC project should be focused 
> primarily on adding non-trivial forces.
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna  
> wrote:
>
>> Hi jason,
>>
>> I have gone through the examples of pydy and your courses that you have 
>> mentioned. For example: Here 
>> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, 
>> the plan is to implement the same thing in a class so that user can call 
>> the linear spring damper object whenever it is required and use numerical 
>> methods that can operate on force objects, is it the right thing? Also is 
>> there any priority for forces that should be implemented first since there 
>> many kinds of forces to be implemented.
>>
>> Thanks,
>> Praneeth
>>
>> On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com 
>> wrote:
>>
>>> Praneeth,
>>>
>>> Checking out examples in pydy, sympy, and my various courses (MAE 223, 
>>> ENG122, ME41055) are also good locations.
>>>
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791 <(530)%20601-9791>
>>>
>>>
>>> On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  wrote:
>>>
 Hi Praneeth,

 I recommend looking at force types in various physics engines to get 
 ideas. The rest would really come from academic papers and text books.

 Jason
 moorepants.info
 +01 530-601-9791 <(530)%20601-9791>


 On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna  
 wrote:

> Hi all,
>
> I have already posted regarding my interest in the idea *Implementing 
> Specific Forces and Torque objects *but have not recieved any reply 
> yet,Could the potential mentor please guide me on what has to be done in 
> this project and some resources, so that I can start working on my 
> proposal 
> since there isn't much time left.
>
> Thanks, 
> Praneeth
>
> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>
>> Hey!
>>
>> While going through the GSOC 2022 ideas I have come across the idea 
>> of Implementing Specific Forces and Torque objects which i found 
>> interesting. There are many possible examples mentioned by Jason K. 
>> Moore. 
>> And I'm able to find a resource for contact force models : 
>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>>  
>> which i found useful. Are there any resources for the examples mentioned 
>> in 
>> issue which can helpful for understanding the implementation of concept 
>> other than contact force models?
>>
>> I'm thinking of adding different classes for different type of force 
>> models and torques and that can be used to create a force object or 
>> torque 
>> object of that type also numerical methods can be added to individual 
>> classes.
>>
>> I would request Jason K. Moore to guide me on how to move forward in 
>> this project, regarding the implementation and about what all kinds of 
>> forces and torques should be implemented so that i can start working on 
>> my 
>> proposal.
>>
>> Thanks, 
>> Praneeth 
>>
>>
>> -- 
> You received this message because you are subscribed to the Google 
> Groups "sympy" group.
> To unsubscribe from this group and stop receiving emails from it, send 
> an email to sympy+un...@googlegroups.com.
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
>  
> 
> .
>
 -- 
>> You received this message because you are 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Jason Moore]

Praneeth,

Yes we should have a linear spring and damper force that is premade, but
that is really just a trivial case. The GSoC project should be focused
primarily on adding non-trivial forces.

Jason
moorepants.info
+01 530-601-9791


On Sat, Mar 26, 2022 at 7:29 AM praneeth ratna 
wrote:

> Hi jason,
>
> I have gone through the examples of pydy and your courses that you have
> mentioned. For example: Here
> https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html,
> the plan is to implement the same thing in a class so that user can call
> the linear spring damper object whenever it is required and use numerical
> methods that can operate on force objects, is it the right thing? Also is
> there any priority for forces that should be implemented first since there
> many kinds of forces to be implemented.
>
> Thanks,
> Praneeth
>
> On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com wrote:
>
>> Praneeth,
>>
>> Checking out examples in pydy, sympy, and my various courses (MAE 223,
>> ENG122, ME41055) are also good locations.
>>
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  wrote:
>>
>>> Hi Praneeth,
>>>
>>> I recommend looking at force types in various physics engines to get
>>> ideas. The rest would really come from academic papers and text books.
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791 <(530)%20601-9791>
>>>
>>>
>>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
>>> wrote:
>>>
 Hi all,

 I have already posted regarding my interest in the idea *Implementing
 Specific Forces and Torque objects *but have not recieved any reply
 yet,Could the potential mentor please guide me on what has to be done in
 this project and some resources, so that I can start working on my proposal
 since there isn't much time left.

 Thanks,
 Praneeth

 On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:

> Hey!
>
> While going through the GSOC 2022 ideas I have come across the idea of
> Implementing Specific Forces and Torque objects which i found interesting.
> There are many possible examples mentioned by Jason K. Moore. And I'm able
> to find a resource for contact force models :
> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
> which i found useful. Are there any resources for the examples mentioned 
> in
> issue which can helpful for understanding the implementation of concept
> other than contact force models?
>
> I'm thinking of adding different classes for different type of force
> models and torques and that can be used to create a force object or torque
> object of that type also numerical methods can be added to individual
> classes.
>
> I would request Jason K. Moore to guide me on how to move forward in
> this project, regarding the implementation and about what all kinds of
> forces and torques should be implemented so that i can start working on my
> proposal.
>
> Thanks,
> Praneeth
>
>
> --
 You received this message because you are subscribed to the Google
 Groups "sympy" group.
 To unsubscribe from this group and stop receiving emails from it, send
 an email to sympy+un...@googlegroups.com.
 To view this discussion on the web visit
 https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
 
 .

>>> --
> You received this message because you are subscribed to the Google Groups
> "sympy" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sympy+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/sympy/d61600ae-f566-44c5-9548-ef79b5e2c423n%40googlegroups.com
> 
> .
>

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Hi jason,

I have gone through the examples of pydy and your courses that you have 
mentioned. For example: Here 
https://pydy.readthedocs.io/en/stable/examples/mass-spring-damper.html, the 
plan is to implement the same thing in a class so that user can call the 
linear spring damper object whenever it is required and use numerical 
methods that can operate on force objects, is it the right thing? Also is 
there any priority for forces that should be implemented first since there 
many kinds of forces to be implemented.

Thanks,
Praneeth

On Friday, March 25, 2022 at 3:45:55 PM UTC+5:30 moore...@gmail.com wrote:

> Praneeth,
>
> Checking out examples in pydy, sympy, and my various courses (MAE 223, 
> ENG122, ME41055) are also good locations.
>
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  wrote:
>
>> Hi Praneeth,
>>
>> I recommend looking at force types in various physics engines to get 
>> ideas. The rest would really come from academic papers and text books.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791 <(530)%20601-9791>
>>
>>
>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna  
>> wrote:
>>
>>> Hi all,
>>>
>>> I have already posted regarding my interest in the idea *Implementing 
>>> Specific Forces and Torque objects *but have not recieved any reply 
>>> yet,Could the potential mentor please guide me on what has to be done in 
>>> this project and some resources, so that I can start working on my proposal 
>>> since there isn't much time left.
>>>
>>> Thanks, 
>>> Praneeth
>>>
>>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>>>
 Hey!

 While going through the GSOC 2022 ideas I have come across the idea of 
 Implementing Specific Forces and Torque objects which i found interesting. 
 There are many possible examples mentioned by Jason K. Moore. And I'm able 
 to find a resource for contact force models : 
 https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
  
 which i found useful. Are there any resources for the examples mentioned 
 in 
 issue which can helpful for understanding the implementation of concept 
 other than contact force models?

 I'm thinking of adding different classes for different type of force 
 models and torques and that can be used to create a force object or torque 
 object of that type also numerical methods can be added to individual 
 classes.

 I would request Jason K. Moore to guide me on how to move forward in 
 this project, regarding the implementation and about what all kinds of 
 forces and torques should be implemented so that i can start working on my 
 proposal.

 Thanks, 
 Praneeth 


 -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "sympy" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to sympy+un...@googlegroups.com.
>>> To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Peter Stahlecker]

Dear Jason,

Thanks!
If I understood correctly, this refers to, how forces may be ‚created‘,
such as e.g. by gravitation, or by friction or by an electric field or…..

NB:
I tried a nonlinear spring one time in one of my play programs.
‚Kane‘ worked fine, but numeric integration was a mess….
Peter

On Fri 25. Mar 2022 at 16:19 Jason Moore  wrote:

> Peter,
>
> Yes a force is a force and a torque is a torque, but there are specific
> mathematical descriptions of specific forces and torques. For example, what
> is the mathematical (analytic and computational) representation of two
> forces that contact each other. There are many models of contact forces and
> if we provide popular implementations in sympy mechanics, then it will save
> users time on defining these from scratch (which can be very tedious).
> Newton's law of gravitation is another simple force that we could encode or
> even a simple spring (or a complex nonlinear spring).
>
> Jason
> moorepants.info
> +01 530-601-9791
>
>
> On Fri, Mar 25, 2022 at 9:59 AM Peter Stahlecker <
> peter.stahlec...@gmail.com> wrote:
>
>> Stupid question from me:
>> I thought a force was a force and a torque was a torque.
>> Are there differentforces?
>>
>> On Fri 25. Mar 2022 at 14:01 Jason Moore  wrote:
>>
>>> Hi Praneeth,
>>>
>>> I recommend looking at force types in various physics engines to get
>>> ideas. The rest would really come from academic papers and text books.
>>>
>>> Jason
>>> moorepants.info
>>> +01 530-601-9791
>>>
>>>
>>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
>>> wrote:
>>>
 Hi all,

 I have already posted regarding my interest in the idea *Implementing
 Specific Forces and Torque objects *but have not recieved any reply
 yet,Could the potential mentor please guide me on what has to be done in
 this project and some resources, so that I can start working on my proposal
 since there isn't much time left.

 Thanks,
 Praneeth

 On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:

> Hey!
>
> While going through the GSOC 2022 ideas I have come across the idea of
> Implementing Specific Forces and Torque objects which i found interesting.
> There are many possible examples mentioned by Jason K. Moore. And I'm able
> to find a resource for contact force models :
> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
> which i found useful. Are there any resources for the examples mentioned 
> in
> issue which can helpful for understanding the implementation of concept
> other than contact force models?
>
> I'm thinking of adding different classes for different type of force
> models and torques and that can be used to create a force object or torque
> object of that type also numerical methods can be added to individual
> classes.
>
> I would request Jason K. Moore to guide me on how to move forward in
> this project, regarding the implementation and about what all kinds of
> forces and torques should be implemented so that i can start working on my
> proposal.
>
> Thanks,
> Praneeth
>
>
> --
 You received this message because you are subscribed to the Google
 Groups "sympy" group.
 To unsubscribe from this group and stop receiving emails from it, send
 an email to sympy+unsubscr...@googlegroups.com.
 To view this discussion on the web visit
 https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
 
 .

>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "sympy" group.
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>>> 
>>> .
>>>
>> --
>> Best regards,
>>
>> Peter Stahlecker
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "sympy" group.
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>>
> To view this discussion on the web visit
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>> 
>> .
>>
> --
> You received this message because you are subscribed to the Google Groups
> "sympy" 

Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Jason Moore]

Peter,

Yes a force is a force and a torque is a torque, but there are specific
mathematical descriptions of specific forces and torques. For example, what
is the mathematical (analytic and computational) representation of two
forces that contact each other. There are many models of contact forces and
if we provide popular implementations in sympy mechanics, then it will save
users time on defining these from scratch (which can be very tedious).
Newton's law of gravitation is another simple force that we could encode or
even a simple spring (or a complex nonlinear spring).

Jason
moorepants.info
+01 530-601-9791


On Fri, Mar 25, 2022 at 9:59 AM Peter Stahlecker 
wrote:

> Stupid question from me:
> I thought a force was a force and a torque was a torque.
> Are there differentforces?
>
> On Fri 25. Mar 2022 at 14:01 Jason Moore  wrote:
>
>> Hi Praneeth,
>>
>> I recommend looking at force types in various physics engines to get
>> ideas. The rest would really come from academic papers and text books.
>>
>> Jason
>> moorepants.info
>> +01 530-601-9791
>>
>>
>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
>> wrote:
>>
>>> Hi all,
>>>
>>> I have already posted regarding my interest in the idea *Implementing
>>> Specific Forces and Torque objects *but have not recieved any reply
>>> yet,Could the potential mentor please guide me on what has to be done in
>>> this project and some resources, so that I can start working on my proposal
>>> since there isn't much time left.
>>>
>>> Thanks,
>>> Praneeth
>>>
>>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>>>
 Hey!

 While going through the GSOC 2022 ideas I have come across the idea of
 Implementing Specific Forces and Torque objects which i found interesting.
 There are many possible examples mentioned by Jason K. Moore. And I'm able
 to find a resource for contact force models :
 https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
 which i found useful. Are there any resources for the examples mentioned in
 issue which can helpful for understanding the implementation of concept
 other than contact force models?

 I'm thinking of adding different classes for different type of force
 models and torques and that can be used to create a force object or torque
 object of that type also numerical methods can be added to individual
 classes.

 I would request Jason K. Moore to guide me on how to move forward in
 this project, regarding the implementation and about what all kinds of
 forces and torques should be implemented so that i can start working on my
 proposal.

 Thanks,
 Praneeth


 --
>>> You received this message because you are subscribed to the Google
>>> Groups "sympy" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to sympy+unsubscr...@googlegroups.com.
>>> To view this discussion on the web visit
>>> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
>>> 
>>> .
>>>
>> --
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>> email to sympy+unsubscr...@googlegroups.com.
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>> 
>> .
>>
> --
> Best regards,
>
> Peter Stahlecker
>
> --
> You received this message because you are subscribed to the Google Groups
> "sympy" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sympy+unsubscr...@googlegroups.com.
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> 
> .
>

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Jason Moore]

Praneeth,

Checking out examples in pydy, sympy, and my various courses (MAE 223,
ENG122, ME41055) are also good locations.


Jason
moorepants.info
+01 530-601-9791


On Fri, Mar 25, 2022 at 9:00 AM Jason Moore  wrote:

> Hi Praneeth,
>
> I recommend looking at force types in various physics engines to get
> ideas. The rest would really come from academic papers and text books.
>
> Jason
> moorepants.info
> +01 530-601-9791
>
>
> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
> wrote:
>
>> Hi all,
>>
>> I have already posted regarding my interest in the idea *Implementing
>> Specific Forces and Torque objects *but have not recieved any reply
>> yet,Could the potential mentor please guide me on what has to be done in
>> this project and some resources, so that I can start working on my proposal
>> since there isn't much time left.
>>
>> Thanks,
>> Praneeth
>>
>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>>
>>> Hey!
>>>
>>> While going through the GSOC 2022 ideas I have come across the idea of
>>> Implementing Specific Forces and Torque objects which i found interesting.
>>> There are many possible examples mentioned by Jason K. Moore. And I'm able
>>> to find a resource for contact force models :
>>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>>> which i found useful. Are there any resources for the examples mentioned in
>>> issue which can helpful for understanding the implementation of concept
>>> other than contact force models?
>>>
>>> I'm thinking of adding different classes for different type of force
>>> models and torques and that can be used to create a force object or torque
>>> object of that type also numerical methods can be added to individual
>>> classes.
>>>
>>> I would request Jason K. Moore to guide me on how to move forward in
>>> this project, regarding the implementation and about what all kinds of
>>> forces and torques should be implemented so that i can start working on my
>>> proposal.
>>>
>>> Thanks,
>>> Praneeth
>>>
>>>
>>> --
>> You received this message because you are subscribed to the Google Groups
>> "sympy" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to sympy+unsubscr...@googlegroups.com.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
>> 
>> .
>>
>

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[praneeth ratna]

Hi Jason,

Thanks for the reply,

I have searched for physics engines which have implemented forces and 
torques but could not find one. Could you suggest any physics engines which 
has forces implemented so that i can get an idea regarding the 
implementation?

Thanks,
Praneeth

On Friday, March 25, 2022 at 1:31:17 PM UTC+5:30 moore...@gmail.com wrote:

> Hi Praneeth,
>
> I recommend looking at force types in various physics engines to get 
> ideas. The rest would really come from academic papers and text books.
>
> Jason
> moorepants.info
> +01 530-601-9791 <(530)%20601-9791>
>
>
> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna  
> wrote:
>
>> Hi all,
>>
>> I have already posted regarding my interest in the idea *Implementing 
>> Specific Forces and Torque objects *but have not recieved any reply 
>> yet,Could the potential mentor please guide me on what has to be done in 
>> this project and some resources, so that I can start working on my proposal 
>> since there isn't much time left.
>>
>> Thanks, 
>> Praneeth
>>
>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>>
>>> Hey!
>>>
>>> While going through the GSOC 2022 ideas I have come across the idea of 
>>> Implementing Specific Forces and Torque objects which i found interesting. 
>>> There are many possible examples mentioned by Jason K. Moore. And I'm able 
>>> to find a resource for contact force models : 
>>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>>>  
>>> which i found useful. Are there any resources for the examples mentioned in 
>>> issue which can helpful for understanding the implementation of concept 
>>> other than contact force models?
>>>
>>> I'm thinking of adding different classes for different type of force 
>>> models and torques and that can be used to create a force object or torque 
>>> object of that type also numerical methods can be added to individual 
>>> classes.
>>>
>>> I would request Jason K. Moore to guide me on how to move forward in 
>>> this project, regarding the implementation and about what all kinds of 
>>> forces and torques should be implemented so that i can start working on my 
>>> proposal.
>>>
>>> Thanks, 
>>> Praneeth 
>>>
>>>
>>> -- 
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>>  
>> 
>> .
>>
>

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Peter Stahlecker]

Stupid question from me:
I thought a force was a force and a torque was a torque.
Are there differentforces?

On Fri 25. Mar 2022 at 14:01 Jason Moore  wrote:

> Hi Praneeth,
>
> I recommend looking at force types in various physics engines to get
> ideas. The rest would really come from academic papers and text books.
>
> Jason
> moorepants.info
> +01 530-601-9791
>
>
> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
> wrote:
>
>> Hi all,
>>
>> I have already posted regarding my interest in the idea *Implementing
>> Specific Forces and Torque objects *but have not recieved any reply
>> yet,Could the potential mentor please guide me on what has to be done in
>> this project and some resources, so that I can start working on my proposal
>> since there isn't much time left.
>>
>> Thanks,
>> Praneeth
>>
>> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>>
>>> Hey!
>>>
>>> While going through the GSOC 2022 ideas I have come across the idea of
>>> Implementing Specific Forces and Torque objects which i found interesting.
>>> There are many possible examples mentioned by Jason K. Moore. And I'm able
>>> to find a resource for contact force models :
>>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>>> which i found useful. Are there any resources for the examples mentioned in
>>> issue which can helpful for understanding the implementation of concept
>>> other than contact force models?
>>>
>>> I'm thinking of adding different classes for different type of force
>>> models and torques and that can be used to create a force object or torque
>>> object of that type also numerical methods can be added to individual
>>> classes.
>>>
>>> I would request Jason K. Moore to guide me on how to move forward in
>>> this project, regarding the implementation and about what all kinds of
>>> forces and torques should be implemented so that i can start working on my
>>> proposal.
>>>
>>> Thanks,
>>> Praneeth
>>>
>>>
>>> --
>> You received this message because you are subscribed to the Google Groups
>> "sympy" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to sympy+unsubscr...@googlegroups.com.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
>> 
>> .
>>
> --
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> 
> .
>
-- 
Best regards,

Peter Stahlecker

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Re: [sympy] Re: Classical Mechanics : Forces and Torques

[Jason Moore]

Hi Praneeth,

I recommend looking at force types in various physics engines to get ideas.
The rest would really come from academic papers and text books.

Jason
moorepants.info
+01 530-601-9791


On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna 
wrote:

> Hi all,
>
> I have already posted regarding my interest in the idea *Implementing
> Specific Forces and Torque objects *but have not recieved any reply
> yet,Could the potential mentor please guide me on what has to be done in
> this project and some resources, so that I can start working on my proposal
> since there isn't much time left.
>
> Thanks,
> Praneeth
>
> On Friday, March 18, 2022 at 12:29:04 AM UTC+5:30 praneeth ratna wrote:
>
>> Hey!
>>
>> While going through the GSOC 2022 ideas I have come across the idea of
>> Implementing Specific Forces and Torque objects which i found interesting.
>> There are many possible examples mentioned by Jason K. Moore. And I'm able
>> to find a resource for contact force models :
>> https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics
>> which i found useful. Are there any resources for the examples mentioned in
>> issue which can helpful for understanding the implementation of concept
>> other than contact force models?
>>
>> I'm thinking of adding different classes for different type of force
>> models and torques and that can be used to create a force object or torque
>> object of that type also numerical methods can be added to individual
>> classes.
>>
>> I would request Jason K. Moore to guide me on how to move forward in this
>> project, regarding the implementation and about what all kinds of forces
>> and torques should be implemented so that i can start working on my
>> proposal.
>>
>> Thanks,
>> Praneeth
>>
>>
>> --
> You received this message because you are subscribed to the Google Groups
> "sympy" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sympy+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com
> 
> .
>

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