Hi OpenSim Team This is more like a theoretical question: I struggle to understand how the joint reaction forces are derived during the static opt.? Are they part of the minimization function? If yes, how are they weighted in the cost function compared to the muscle activations? And why do i obtain ...

Hi all,

During my simulations, one of my muscles is very quickly activated to the maximum activation. Is there a muscle parameter where I can adjust the muscle in order to have it a behaving a little less aggressive?

Thanks, Jonas

Hi Osim-community, I'm working with the Arnold-Model, resp. a modified version of it. During my simulations, I get always warnings looking like this: -------------------------------------------------------------------------------------------------- WARNING: Thelen2003Muscle::computeInitialFiberEquil...

Thanks Claudio!! Exactly what I was looking for! =)

Hi all,

I changed muscle pathes of a model. The tendon-muscle-length is now shorter or smaller.
How do I need to adjust the OFL and TSL so that is appropriate? Is it linear?

Thanks, Jonas

Could anybody give me some hints, please? I don't need a solution for the problem, just a list of possible factors so I can check on them?
That would help me a lot! I'm trying to solve that issue for over 5 days now... tough!
Thanks!

Hi all, I am using a slightly modified version of the two-legged arnold model and am simulating stair descending. However, my SO leads to very high residual forces (up to -900 N resp. +600 N (see attach.)). The simulation is constrained to a time where ground-forces are reacting onto my model. What ...

Hi! Could someone explain me, what the linear function does: </CoordinateSet> <SpatialTransform> <TransformAxis name="rotation1"> <axis> 1.000000000000 0.000000000000 0.000000000000 </axis> <function name="f1"> <LinearFunction> <coefficients> 1.000000 0.000000 </coefficients> </LinearFunction> </fun...

Nobody who can help me?

Hi all,

Again, a Pathpoint related question:

Is it possible to find the location of the virtual pathpoint, where a muscle path is bending due to wrapping objects. When yes, how to do that with Matlab?
Help is very much appreciated!!

Best, Jonas