I am incrementing the muscle mass in my model and therefore the mass of each segment. I wonder if I need to change the inertia tensor proportionally or, is it a normalized tensor by the segment mass?

Bests,
Araceli.

Hello, I am using an OpenSim plugin (https://simtk.org/projects/opt_muscle_par) to optimize the muscle tendon parameters to scale my model. When running it in Matlab I optain this error: Undefined function or variable 'getJoint'. Error in getJointsSpannedByMuscle (line 89) spannedJoint = body.getJoi...

I checked and I do not have the coordinate locked, and the the pelvis_tilt angles are within the range of the coordinate as well. I am increasing the muscle forces and max_control but still does not work. could it be this the problem? in case, Which criteria should I use to scaling the muscle forces?

Hello, I am performing Static optimization for a running motion. My optimization fails and I get this errors. Locking the pelvis_tild coordinate I get the errors. What can the mistake of my model could be? The muscles might be too weak and need additional joint toques? time = 5.29 Performance = 4.02...

Hello, I am calculating the potential energy of a Hunt-Cross Ley force given by a contact of a sphere-halfspace. Checking the simbody here: https://github.com/simbody/simbody/blob/master/Simbody/src/HuntCrossleyContact.cpp#L396-L475 I have doubts about the material properties E1 and E2. E1 would be ...

I used the API in Matlab, and it seems that the problem is opening the .sto file.

Hi Ayman, Thank you for your help.

I am not using the API.

I am not getting any value in the table .sto, just the time. Can it be an issue of the sates file? it seem to work well when running the motion.

Bests,
Araceli.

Hello, I am using the analyze tool to get the kinetic and potential energy of my model. I get two warnings saying that: Warning: No outputs were connected to 'ReporterVec3' of type TableReporter__Vec3_. You can connect outputs by calling addToReport(). Warning: No outputs were connected to 'Reporter...

Hello, I created a model in OpenSim 4.1 but I need to use it in OpenSim 3 because I want to run an optimization in SCONE. I got an error message in version 3 saying that: Invalid body (Unassigned) specified in contact geometry platform. Is there any restriction in OpenSim 3 compared with OpenSim 4.1...

Hello! I am creating a model of a transtibial amputee with a running Specific prosthesis (blade prosthesis). I am modeling the prosthesis by 4 segments and I want to connect them in OpenSim with pinJoint with a torsional spring. How could I create a torsional spring and specify the stiffness of the ...