Hi,

I'm performing a forward dynamics to evaluate contact forces. Hence, I need to use a small time-step and an accurate integrator. Is there any possibility to change the integrator from the GUI? Is there any integrator that works as predictor-corrector in OpenSim.

Thanks in advance.
Margarida

Hi, I'm running some simulations with an. osim file of the knee joint to get the knee contact forces. To get that, i'm using the force report analysis tool. Therefore, I was wondering in what consists this analysis? Is it an inverse dynamics analysis with a different output, which contains the exter...

Hi, I'm running some simulations with an. osim file of the knee joint to get the knee contact forces. To get that, i'm using the force report analysis tool. Therefore, I was wondering in what consists this analysis? Is it an inverse dynamics analysis with a different output, which contains the exter...

<t>Hi,<br/> <br/> When I run an inverse dynamics with the IDTool, I get the net forces and <br/> torques, but when I run an inverse dynamics with the AnalyzeTool, I get some values related to muscles. What these values mean? Are they passive <br/> muscle forces? Why do I not get the net forces and t...

<t>Hi,<br/> <br/> I want to evaluate the knee contact forces using different contact force models.<br/> Therefore, firstly I modeled the knee contact forces as elastic foundation forces. <br/> To output these forces, I ran a force reporter, which gave me information about passive muscles forces and ...

Hi,

There is anyway to add a prescribed force from a storage file, instead using a natural cubic spline?

Thanks

<t>Hi,<br/> <br/> I'm building a knee model with contact at tibiofemoral joint. <br/> How can I get the contact forces from GUI. <br/> I run an inverse dynamic analysis, but I only got the total forces. <br/> There is anyway to get the contact forces and the contact indentations. <br/> <br/> Thanks,...

Hi Ayman,

That works fine.

Thanks,
Margarida

<t>Hi Ayman,<br/> <br/> I didn't include any residuals/reserves in my model, so that could be the problem.<br/> I only have the markers file from the gait lab. How can I get these residuals/reserves values? There is anyway to get them from OpenSim?<br/> <br/> Thanks again for your help.<br/> Margari...

Hi Ayman,

So, what is the best way to apply an external constant force to a body center of mass, in order to run a dynamic analysis? Can I do it at the GUI or should I do it from API?

Thanks,
Margarida