Hi, I'm not whether this is the solution, try excluding the muscles: exclude = ArrayStr(); exclude.set(0, 'Muscles'); id.setExcludedForces(exclude); Dear Mohammadreza Rezaie: Thanks for your reply. I have tried replacing the muscle with a PointActuator before and got the correct net joint torque. I...

Hi, I have recently been troubled by a very strange phenomenon. When I tried to perform an inverse dynamics calculation on a very simple model (shown below), I found that whether or not I added a muscle actually affected the magnitude of the generalized force output from the inverse dynamics. The mo...

Hi, I would like to ask a question about static optimization. I have built a model (shown below) with two muscles, two masses and two PinJoints for connection. I want to analyze the static mechanics of this model by setting the joint coordinates to 0 at each moment in the motion data file and then p...