I found an error: I should have used muscle.setOverrideForce(state, act_m(i,j)); instead of muscle.setForce(state, act_m(i,j)); Further, in muscle optimization I accidendently solved for an adduction motion and not an abduction. Still, I get oscillating solution. How do I define the integrator metho...

After some time of digging I coded the script below (snipped of the code). I use Wu's Shoulder model https://simtk.org/projects/wu-shoulder to calculate the muscle forces. I try to do a forward simulation to see if I get the same motion if I impose the muscle forces directly (Fig. 1). I get a bit be...

Dear Community, I want to do a sensitivity analysis in OpenSim 3.3. What I want to find out is how sensible the location of the insertion sites are. I want to presribe the muscle forces (not the muscle activations) in a forward dynamics manner. Then repeat this for for a grid of different locations ...

Hello everyone, I am trying to export a function from matlab which can be read in LabView. In this matlab code I access my opensim shoulder model to get maximal isometric forces at the current joint position and the moment arm of the muscles. This matlab function I would like to export so i can util...

Hello there, I am currently reading the Dokumenttaion and just released that you described in chapter 3.1.2 the weight as: - beta weight for the sum of squared muscle excitations - gamma weight for the sum of the squared difference between experimental and predicted muscle excitations and in chapter...

If someone has the same problem I hope this helps So I found a work around here: https://simtk.org/plugins/phpBB/viewtopicPhpbb.php?f=91&t=3931&p=16839&start=0&view= and https://simtk.org/forums/viewtopic.php?f=91&t=6123 For the Sphere specifically I used this piece of Code: wrapSphere=WrapSphere();...

Hi everyone, I am building my own Shoulder model and was wondering how to build Wrap objects (espacially Spheres) from Scratch. Is there an MATLAB example how to build a WrapSphere, add it to a body and apply it to certain muscles? Edit: I have tried the following: Humerus_head = WrapSphere(); Humer...

Hello there,

Is there any news when the Linux version is released?
I'd like to work with CEINMS on a Linux Cluster, can we hope for a soon release which allows us this?


cheers,
Jeremy

It does thanks.

Hi Ayman,

thanks alot for your help. It worked .

I am still curious (if you have time to answer), why were some of the geometry shifted and turned?


thanks,
Jeremy