Hi, I have just created two new projects and I can't seem to upload my models to them. I tried using the svn links via the command line but I don't really know what I am doing. I tried it from our institutes hpc computers with a linux distribution and an error said "could not connect to server (http...

Hi, I am currently using OpenSim to model head and neck dynamics and I am trying to model contact of the head with the torso using HuntCrossleyForce contact surfaces. I am interested if anyone has done some research where they have validated their choice of contact parameters? I'd appreciate if anyo...

Hi Sherm, That's a great addition to the optimizer classes. I hit a bit of a bottleneck with that and resorted to wrapping the forward dynamics with the matlab optimization methods. One last question, do you know of anywhere I can get good estimates for the contact parameters? It would be great if t...

Hi Sherm, Sorry, I am using the solved kinematics to compare against some measurements in an objective function for an optimisation routine. By convergence I mean that the integrator accuracy is sufficient to ensure a smooth objective function. i.e. I keep increasing the accuracy until a consistent ...

Hi, I have been running some forward dynamics simulations using HuntCrossleyForce contact elements. This contact has resulted in my problem being numerically stiff and I have used the Cpodes integrator to solve the equations of motion. SimTK::CPodesIntegrator integrator(osimModel.getMultibodySystem(...

Hi all, I just have a question regarding the use of custom joints with reduced dofs vs weld constraints vs locked coordinates. I was wondering if there is any practical difference between these options? I am currently running a forward simulation in the OpenSim API with a number of coordinates being...

Hi Sherm, Thanks for the reply. I am just trying to get a feel as to whether the integrator had converged to a solution and if I could get any info out of the termination reporter but it seems the integrator was running to completion. I do have one question that I have come across since... Do you kn...

Hi, I just have a question regarding investigating whether my simulations have converged or not within the opensim API. My simulation results are doing a few strange things and just wanted to check my integrator tolerances and how the integrator is terminating. I am wondering how I can return the te...

Hi all, One more question following the same thread... I successfully linked the opensim linux binaries in Ubuntu (version 12.04) but when I tried to repeat this in our Institutes hpc computer I had the following issue. Linking CXX executable test /people/tlin067/opensim30/lib/libSimTKmath.so: undef...

All fixed.
Thanks very much for your patient replies!