Hi Brandon, To check the simpler things first, which upper limb model are you using? If it's not a dynamic model with segment masses and inertias defined, static optimization won't run properly, since it's doing an inverse dynamics analysis in the background. In the past, the reserve actuators didn'...

Hello, I'm trying to change the stiffness values of a CoordinateLimitForce element via Matlab script. So far I am able to get the CoordinateLimitForce element as a 'Force' object, then get write access to the properties 'lower_limit' and 'upper_limit' as an AbstractProperty. Here's the script I have...

Hi,

Does anyone know of a SimTK or OpenSim class that computes joint torques due to gravity only? I'd like to compute the torques during a forward simulation. I could think of some work-arounds but I thought I'd ask first. Thanks!

Dustin

Hello Abeer, When the scaling tool adjusts the model markers, it may move the markers inside the segments, depending on the relative tracking weights among markers. That may be why adjusting the marker weights made the previously hidden markers appear in later runs with the scaling tool. Your max er...

What muscle model (Thelen2003, Schutte1993, etc.) does the RigidTendonMuscle actuator use? I read in the .h file that force production is instantaneous, with no excitation-activation dynamics - is this correct?