Hello! James Dunne gave a solution regarding CMC warning. He told that " This issue can occur when a muscle is either very short or very long. The excitations that go the muscle produce almost no forces. So essentially the muscle is in a (very) bad part of its operating range." https://simtk.org/for...

Hello!

I want to change muscle length in OpenSim. How can I change muscle length or which parameter should I need to change for muscle lengthening or shortening.

Thank you

Regards,
Hassan

Emil Walczak !

Thank you for your reply. I checked force.sto file after running simulation. But, the force values in some point is 80000. Which seems not correct.

However, do you know how can I lengthen or shorten a muscle?

Regards,
Hassan

Please check the degree of freedom. You may lock some degree of freedom which are necessary for the simulation.

Thanks
Hassan

Hello! I build a full body model by using both Samuel Hamner model (Muscle-actuated Simulation of Human Running) and Upper and Lower Body Model. I am trying to run CMC. I came to run CMC. But, only for Pectoralis muscles I got a warning in CMC which is CMC::controls warning-small force range for PEC...

Eric Stetz

Thank you for your reply. I will try as you advised

Hi!

I am using gait2392 model for human rolling simulation. I want to know muscle power. In this regard, I am using CMC. During the CMC simulation, every thing looks good except toes. toes are shaking. Could any one please tell me what is the problem?

Thanks
Neshu