Hi All, I am trying to simulate an arm motion with the MoBL arms model, and so I am prescribing trunk motion. I am simulating three cycles but only analyzing the third in order to simulate steady state motion. For my trunk coordinate, I prescribe the position for the full cycle time (with start and ...

Hi All, I am using Matlab and running forward dynamics simulations with the manager (rather than the forward tool). I am able to create TableReporterSpatialVec, but unfortunately the function "addToReport" doesn't exist in Matlab under this class for OpenSim 4.0. I'm not sure how to retrieve the tim...

Hi All, I found this thread while I was looking for how to retrieve joint reaction forces from the Table Reporter. I am using Matlab, and I am able to create the TableReporterSpatialVec, but unfortunately the function "addToReport" doesn't exist in Matlab under this class for OpenSim 4.0. Is there a...

Yes, that's true! I am wanting to analyze both time periods. I am essentially doing this by using one manager, initialized using the initial state and integrating to 0.49 s. Then, setting prescribed to "false" for my prescribed coordinate that I want to be free at this end state, and using a second ...

Hi All, I am trying to prescribe motion of a coordinate for a certain time frame (0-0.49 s), and then run forward dynamics for a different time frame (0-1.35 s). I would like my prescribed coordinate to be free from the 0.49 to 1.35 s range. Is this possible? Right now, forward dynamics just fails b...

Hi All, I am running forward dynamics simulations from Matlab, and then with the same controls, trying to run the Forward Dynamics tool from the GUI (or in Matlab, both have the issue), mostly for previewing purposes and to save the motion file if needed. However, running the forward tool doesn't wo...

Hi All, I have an upper body model with the following kinematic chain: ground - torso - humerus - forearm - hand I am trying to close the loop by adding a joint from hand - ground. I want this joint to be free (or passive) with 6 DoF (so I don't want constrained motion, but rather ultimately I want ...