Dear All, I feel a liitle confused about the model file in a built-in model of OpenSim 4.4 (in folder: ...\Models\Gait10dof18musc). The follows are part of the code in .osim file: My confusion is that, in definition of knee joint, why 'Location of the joint in the parent body (femur)' and 'Location ...

Dear All, I conducted some simulations of object lifting using hands; the locomotion type is stooping; during locomotion, the human model lift an object of 5kg with two hands. Specifcally, PointActuators are applied to simulate object gravity. The details are as follows: <PointActuator name="object_...

Dear All, I ran CMC analysis on a full body model, specifically: 1. To simplify the anslysis and make clear and investigate whether failure of CMC analysis is related to factors other than muscles, all muscles of the model are deleted. 2. Reserve torques are defined for all coordinates The reuslts s...

Dear All, I applied a torque actuator with a controller on a coordinate and ran CMC analysis. However, it was found that, when I tried to plot the torque actuator, its curve (both shape and amplitude) is quite different from the defined one in the controller. May I know what's wrong? Many thanks. Yuan

Hi, Nicos. Many thanks.

Dear All,

I am curious about how the values of reserve torque of joints are calculated in static optimization analysis. Do you have any idea? Many thanks. Yuan

Dear All, May I inquire the follows about static optimization analysis: does it support the setting of HuntCrossleyForce, BushingForce, PathSpring, and PathActuator? I set up an active orthosis model (above settings are used). CMC analysis can be conducted successfully, but SO failed. May you provid...

Dear All,

May I know if there are ways to show the positions of experimental markers. I would like to compare the positional differences between modal and experimental markers. Thanks. Yuan

Hi, Carmichael. Many thanks. I chose to reboot the system; it is normal now.

Dear all, I need to transform some C3D format motion files (from The KIT Motion-Language Dataset ) to OpenSim format (such as .trc format). I used an online tool (https://www.c3dtools.com/users/dashboard). This tool can do it. Yet, in the transformed file, it is not clear to me how the reflective ma...