Hi, Does anybody know how the parameter in the OpenSim Setup files for the Scaling and the IK tool where chosen? The files contain manual scaling factors and selected weights. Were these parameters chosen dependent on the study from John et al. 'Stabilisation of walking by intrinsic muscle propertie...

Hm I tried some simulations but it is not so easy to understand.
Only when T=K*s -> D=-1/v. Only when T=Ks, the spring is linear and dissipation expresses the recoil time for the spring per meter.

So it is just a parameter that links tension to stretch. Is this correct?
One cannot say that is has something to do with the recoil time of the spring?

Excuse me for asking so much I just want to be sure.
Thank you very much.

Thank you for your Reply.

I read the doxygen documentation for the PathSpring class. But I only know that the Dissipation factor is D. But how is the factor defined?

Hi,

Unfortunately I could not find a definition for the dissipation factor (s/m), which is a parameter of the path spring class. Is it correct when I say that the dissipation factor defines the recoil time for the spring per meter?

Thank you
Pia

Thank you very much.

1.Can you tell me what the tolerance is for example? Is it for example maximum and Minimum values for the residual actuators?

Hi, I want to understand the CMC algorithm. Therefore I read the user's guide (https://simtk-confluence.stanford.edu/display/OpenSim/How+CMC+Works) and the paper (Generating dynamic simulations of movement using computed muscle Control -> https://www.researchgate.net/publication/10893106_Generating_...

Hi, I have a Question concerning the muscle activations, controls and actuation force. I used the model Gait2354 and performed a gait Simulation. The I performed CMC and plotted actuations, controls and Forces. I got the results which are attached below. I wanted to compare the activations to the EM...

Hi, I have performed IAA with the model 'Gait 2354', where I implemented a path spring (working with 2.500N/m) on the position if rectus femoris. Further I weakened the rectus femoris muscle to 10% activation by reducing the controls. When I look as the results of IAA, I cannot find the results for ...

To find out what the spring does, I compared the forces of all knee flexors/extensors and all hip flexors/extensors of the original Gait2354 model with the knee flexors/extensors and hip flexors/extensors of Gait 2354 model with a spring implementation. I saw that with the spring implementation the ...