Hi James,
Thanks for your reply. I tried contacting the developers of the model that you suggested and they mentioned that they had pulled it out of the public domain until they complete more work (which could take up to 6 months). So do you know of any other models that I could use?
Thanks,
~Raghu

Hi All, I’m trying to understand the relationship between the muscle activation and the force generated by the muscle. I’m working on an Arm26 model (Thelan 2003 muscle) and I have a simple flexion-extension (3 cycles) motion data lasting around 10 seconds. I also added 2 reserve actuators (1 contro...

Hi Ajay, Thanks a Million! The problem was due to the combination of a wrong BushingForce (I had somehow retained the orientation values from a previous model that I had attempted) as well as the CustomJoint. I replaced the CustomJoint with a SliderJoint and the BushingForce with SpringGeneralizedFo...

Hi All, Thanks for your help. I've posted my code here. I took the Tug-of-War model components and created this model. The only thing that could possibly affect this model is the CustomJoint between the flooring and the block. I had locked all the degrees of freedom except the 'Z' direction (I want ...

Hi All, I created a simple Mass, Spring, Damper system in OpenSim. I applied a force on the Mass through a PointActuator on the opposite direction of the spring and damper. I tried simulating this system in Forward Dynamics using the OpenSim-Matlab tool created by Dr. Reinbolt and his team. I compar...

I forgot to mention that I use version 2.4
Thanks,
Raghu

Hi All, I'm working on a simplistic Arm26 model. I've added 2 coordinate actuators to the model. <CoordinateActuator name="shoulderelev_1"> <isDisabled>false</isDisabled> <min_control>-5</min_control> <max_control>5</max_control> <coordinate>r_shoulder_elev</coordinate> <optimal_force>1</optimal_for...

Thank you very much! I can understand it now.
~Raghu

Hi Ajay, Thank you very much for your response. It makes a lot of sense. I still would like to know about the axis of the torque issue. 1) Why does the sinusoidal torque, when set at the z-axis (0 0 1) produce a completely different response? (The resulting elbow angle is supposed to be sinusoidal) ...

Hi all, I have some updates and some follow up questions regarding my previous post: * I was able to successfully test the openSim/Matlab interface developed by Dr. Reinbolt and his team with OpenSim 2.4. It works well. I'll soon test it with OpenSim 3.0 and post the results. * I was able to create ...