simtk.org

hi,
i am trying to create an externally applied force as: for 0-0.3 time of simulation the force is constant, from 0.3-1 the force follows a sine function and from 1-2 the force is a linear function.
i wonder how can i use prescribed force to combine these three different force functions?
or do i have to create a .xml file for the time and forces and then reading them? (if this is the way, please explain how)
the location of the applied force remains constant.
regards
Shayan

Hi,

PrescribedForce accepts a function object. You can choose from (see inheritance diagram):

https://simtk.org/api_docs/opensim/api_ ... ction.html

I would go with SimmSpline by providing the corresponding values for t, y:

https://simtk.org/api_docs/opensim/api_ ... pline.html

Best

Hi, shayan moradkhani
I have a similar problem to yours. Have you solved your problem? Do you want to share your solution with me?

Thanks!
Qianwen Nie