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

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 propos

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

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 shoul

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

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_con

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

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

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

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 im

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

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 a

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

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. Co

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

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 j

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

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 whenev

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

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

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

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

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

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 engine

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

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 2

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

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 p

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

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 m

[sympy] Re: Classical Mechanics : Forces and Torques

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