Nonlinear Muscle Model

[Mary K]

Hello and sorry for the newbbie question.

I am new to opensim and want to work on a non-linear muscle model.
But I haven't declared yet for sure: the springs used in Thelen 2003 Muscle Mode are supposed to be linear or not?

Thanks in advance

[jimmy d]

A description of the Thelen muscle model used in opensim can be found here;
http://simtk-confluence.stanford.edu:80 ... scle+Model

cheers,
-james

[Mary K]

I have read it, but do you know where can i find all the equations that desrcibe the forces of Thelen's model?

EDIT: part of the opensim source code would be also welcome

[jimmy d]

The OpenSim source code is available to you for download at the bottom of the OpenSim "downloads page". Once downloaded you can look up 'thelen2003muscle.cpp' The doxygen documentation can be found here;
https://simtk.org/api_docs/opensim/api_ ... uscle.html

hope that helps,
-james