Search found 6 matches

by Maxence Lavaill
Mon Mar 11, 2024 5:38 pm
Forum: OpenSim
Topic: [Dog model] Inconsistent values for joint reaction analysis
Replies: 2
Views: 778

Re: [Dog model] Inconsistent values for joint reaction analysis

It's been fixed and it works, thank you very much Heiko!

Max
by Maxence Lavaill
Mon Mar 11, 2024 5:32 pm
Forum: A three-dimensional musculoskeletal model of the dog
Topic: Inconsistent values for joint reaction analysis
Replies: 2
Views: 734

Re: Inconsistent values for joint reaction analysis

Thanks Heiko, it works! It seems that the main issue was the unticked "Solve for equilibrium for actuator states" as it now works even with a precision of 12. I had never ticked this before thinking that I didn't need for pure inverse dynamics problem, but it seems that it is still rather important....
by Maxence Lavaill
Thu Mar 07, 2024 6:02 pm
Forum: A three-dimensional musculoskeletal model of the dog
Topic: Inconsistent values for joint reaction analysis
Replies: 2
Views: 734

Inconsistent values for joint reaction analysis

Hi team,
I am sharing my post from the general OpenSim forum here as well --> viewtopicPhpbb.php?f=91&t=17652&p=0&start=0&view=

Any idea on why the JRA tool seems inconsistent with the dog model?
Thanks !
Max
by Maxence Lavaill
Thu Mar 07, 2024 6:00 pm
Forum: OpenSim
Topic: [Dog model] Inconsistent values for joint reaction analysis
Replies: 2
Views: 778

[Dog model] Inconsistent values for joint reaction analysis

Hi everyone, I've had an issue for quite some time now and struggle to explain why the joint reaction analysis tool gives me stupidly high values (>15 000N) with the dog model from Stark et al., 2021 (https://simtk.org/projects/dogmodel) through all joints of the left forelimb. When muscles are incl...
by Maxence Lavaill
Mon Jan 22, 2024 6:52 pm
Forum: OpenSim
Topic: Coordinates of muscle points with wrapping surfaces
Replies: 10
Views: 2235

Re: Coordinates of muscle points with wrapping surfaces

Hi Simao, Sorry for reopening this discussion. I am trying to access muscle path points on the surface of a wrapping object as well. Unfortunately, "PathWrapPoint" and "PathWrapSet" don't seem to be available through the Matlab API up to OpenSim 4.4. Did you succeed in replicating the OpenSim wrappi...
by Maxence Lavaill
Wed Jan 10, 2024 10:39 pm
Forum: Thoracoscapular muscle contributions to shoulder movement and work.
Topic: Static Optimization Fails
Replies: 1
Views: 307

Re: Static Optimization Fails

Hi Ibrahim, I know your post is quite old now, but I will try to help you and others. I believe the issue comes from the AC constraint in the model. Static optimisation struggles to satisfy both joint torques and the AC constraint at the same time. If you have marker data, you should try running IK ...