Search found 4 matches

by Lukas Connolly
Mon Nov 09, 2020 9:26 am
Forum: OpenSim
Topic: Initial muscle fiber length is NaN in Static Optimization
Replies: 0
Views: 423

Initial muscle fiber length is NaN in Static Optimization

Hello, I'm currently working on a full body model which combines the detailed thoracolumbar spine model by Bruno et al. and the Gait2354 model. Therefore the full model is relatively large and difficult to oversee. In general my modeling (custom spinal alignment) and simulation pipeline runs well. B...
by Lukas Connolly
Thu Apr 16, 2020 2:47 pm
Forum: OpenSim
Topic: Lower Extremities hanging below ground
Replies: 1
Views: 207

Lower Extremities hanging below ground

Dear Community, I'm currently debugging an OpenSim Pipeline with a newly created OpenSim Model (Gait2354 & Thoracolumbar Rib Cage Model combined) which uses Inverse Kinematics to trace MotionCapture data, then calculates Muscle Activations by Static Optimization including Ground Reaction Forces and ...
by Lukas Connolly
Mon Mar 16, 2020 1:30 am
Forum: OpenSim
Topic: Problem with Output Files of Joint Reaction Analysis
Replies: 2
Views: 413

Re: Problem with Output Files of Joint Reaction Analysis

Hello Ayman, thanks for your quick response! Regarding your question about the inconsistency between runs. If I run the same simulation (same input and setup files) multiple times, I almost always get a different result, except for when all numbers look reasonable then the values only vary in the 1%...
by Lukas Connolly
Thu Mar 12, 2020 8:55 am
Forum: OpenSim
Topic: Problem with Output Files of Joint Reaction Analysis
Replies: 2
Views: 413

Problem with Output Files of Joint Reaction Analysis

Hi all, I'm currently facing a problem I can't really troubleshoot on my own. I already asked my surrounding OpenSim experts in my lab and nobody could figure out the cause for this problem. The problem is, that when I run a Joint Reaction Analysis (following Static Optimization), I get different ou...