Hi George, That's great that you've found the Soccer Kick Example useful! We are in the process of beta testing the next release of OpenSim - version 3.2. We will update the soccer kick example for this version. If you'd be interested in testing out the beta version, let us know and we can send you ...

Omar - There are a few models included in the OpenSim distribution that have contact geometry defined. You can take a look at the "BouncingBlock" model and the "ToyDropLandingModel" to see how contact is defined. Please let us know after looking at these models if you have remaining questions. Best ...

Maya -

You should use the call:

cmcTool.setExternalLoadsFileName([residualMotorsFilePath residualMotors]);

See the CMCTool doxygen for other calls:
https://simtk.org/api_docs/opensim/api_ ... CTool.html

I believe the setForceSetFiles is an internal method not intended for
Jen

Maya - As Ajay noted in his email, you can open the setup (XML) files in any editor (Notepad++ will color code for you) and take a look at the settings. Compare the file generated by your Matlab scripts (the tool should have a print command or similar). Please verify that the files and paths are cor...

Yannik -

Our group recently published a paper documenting the new muscle models. You can find it along with some other muscle model information here:
http://simtk-confluence.stanford.edu:80 ... blications

Jen

David - If you go to Help -> XML Browser -> MuscleAnalysis you will find all of the settings you can specify for the Muscle Analysis. This info is specified in the Analysis setup file. You can also change these parameters by going to the Analyze Tool -> Analyses Tab -> Add a Muscle Analysis -> Edit....

Jiang - You can see an example of how to specify contact in the BouncingBlock model that we distribute with OpenSim. The drop landing model was intended as a demonstration model only. It's representation of foot-floor contact has not been validated in a research setting (e.g. the placement of the co...

Jiang - There isn't a model like this that I know of. You might be able to combine a neck model with another full body model. I'm curious about how you plan to use the model. What structures or motions are you most interested in and what questions about those structures or motions do you hope to ans...

Bruno - I'd suggest reading through the User Guide, starting with the section that gives an overview of the typical OpenSim workflow: http://simtk-confluence.stanford.edu:8080/display/OpenSim/Overview+of+the+OpenSim+Workflow The following chapters about Preparing your data, the Scale Tool, and the I...

Roman - Thanks for your interest in OpenSim. Please see my responses below: 1) How can I create muscle defect? I need simulate defects of muscles after resection soft tissue tumor. You could change the max isometric force of a muscle to simulate a reduction in strength. This is one possibility - the...