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 <moorepa...@gmail.com> 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 <moorepa...@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 >>> >>> >>> On Wed, Mar 23, 2022 at 5:31 AM praneeth ratna <praneeth.ra...@gmail.com> >>> 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 >>>> <https://groups.google.com/d/msgid/sympy/f010d4bf-5986-4ac2-946f-0d306697a36cn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >>> 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/CAP7f1Aj%3DkaK5_W4L_%2BKn3%2BfNvhhP6iErshJ4kRVeryPP1Fb8fg%40mail.gmail.com >>> <https://groups.google.com/d/msgid/sympy/CAP7f1Aj%3DkaK5_W4L_%2BKn3%2BfNvhhP6iErshJ4kRVeryPP1Fb8fg%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> 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. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CABKqA0YXofGvjm%3DJgN19GR%2B_emS_iRvhCWbisQXJ6KE3VENQug%40mail.gmail.com >> <https://groups.google.com/d/msgid/sympy/CABKqA0YXofGvjm%3DJgN19GR%2B_emS_iRvhCWbisQXJ6KE3VENQug%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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/CAP7f1AhR-3bxKnSiw4obTW8ZH9MvG2cmM6nc3_0a1gEu7cu-qg%40mail.gmail.com > <https://groups.google.com/d/msgid/sympy/CAP7f1AhR-3bxKnSiw4obTW8ZH9MvG2cmM6nc3_0a1gEu7cu-qg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- Best regards, Peter Stahlecker -- You received this message because you are subscribed to the Google Groups "sympy" group. 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