Search found 4 matches

by zhizheng hu
Thu Mar 28, 2024 7:31 pm
Forum: OpenSim
Topic: How to get the corresponding mass characteristics (mass, mass center, inertia) through the existing VTP file or asc file
Replies: 0
Views: 191

How to get the corresponding mass characteristics (mass, mass center, inertia) through the existing VTP file or asc file

The model has vtp files and asc files, I need to know their (mass, mass center, inertia) parameters and add them to opensim. So how do I get these parameters from these files
by zhizheng hu
Thu Feb 29, 2024 8:09 am
Forum: OpenSim
Topic: Static Optimization
Replies: 4
Views: 529

Re: Static Optimization

kernalnet wrote:
Thu Feb 29, 2024 3:04 am
So, make sure that every free coordinate is actuated by muscles and/or a CoordinateActuator.
I locked all the other coordinates except elbow flexion and added a CoordinateActuator, but still couldn't perform static optimization calculations.
by zhizheng hu
Thu Feb 29, 2024 2:20 am
Forum: OpenSim
Topic: Static Optimization
Replies: 4
Views: 529

Re: Static Optimization

kernalnet wrote:
Wed Feb 28, 2024 1:50 am
Hi, perhaps there is zero mass body in your model.
The mass of all bodies is defined
by zhizheng hu
Wed Feb 28, 2024 12:40 am
Forum: OpenSim
Topic: Static Optimization
Replies: 4
Views: 529

Static Optimization

When I use the self-built model for static optimization calculation, the problem of matrix singularity always occurs. If the mac version is used, static optimization fails, and all data in the output file is 0. What usually goes wrong? Error code Win Error detected by Simbody method lapackInverse (l...