I am in the process of teaching myself how to use the sympy mechanics package for multi-body modelling with the addition of the pydy package.
I am running into an issue when using the generate_ode_function tool in pydy and am looking for a bit of guidance as to what is going on. An example of the issue that I am running into is here <https://github.com/Jerold-S/Examples/commit/4552ac13ee7b488a2a435b6428dfbe94cf3561cf> - I have adapted the quick-return example from this <https://onlinelibrary.wiley.com/doi/epdf/10.1002/cae.22438>article to include an additional body, attached to upper sliding point. I am able to run the article's model without issue and can match the results seen there, however when I try to attach this additional body, the simulation falls apart with the constraints failing. The additional body is the top grey part, pointing upward in the below picture. [image: QuickReturn_Extended.png] I imagine the issue that I am running into is due to the way that the constraints are defined, however I can't see how the constraints on the new body are different from what was required for the article's model. -- 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/e14c692f-f146-4af2-8eee-b64e7a9e6994n%40googlegroups.com.
