Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
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Juliet M
- Posts: 8
- Joined: Tue Feb 13, 2024 2:43 am
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by Juliet M » Tue Feb 13, 2024 3:41 am
Hello there,
I am a beginner user and I would like to modify the stiffness of the Achilles tendon on a model, for instance the 3DGaitModel2392. The aim is to observe muscular forces and muscular coordination according to several stiffnesses of the Achilles tendon as input of the model. How can I configure this input as easy as possible? I work on OpenSim 4.4.
I thank you in advance!
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Mohammadreza Rezaie
- Posts: 387
- Joined: Fri Nov 24, 2017 12:48 am
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by Mohammadreza Rezaie » Wed Feb 14, 2024 6:51 am
Hi, if I'm not mistaken, it can be controlled by a property related to tendon strain at maximum isometric muscle force. Depending on your muscle type, this property would be either
FmaxTendonStrain in Thelen2003Muscle or
strain_at_one_norm_force (in TendonForceLengthCurve) in Millard2012EquilibriumMuscle.
Interestingly, I had posted a suggestion in this regard:
https://github.com/opensim-org/opensim- ... issues/172
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Juliet M
- Posts: 8
- Joined: Tue Feb 13, 2024 2:43 am
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by Juliet M » Mon Feb 19, 2024 1:55 am
Ok I got it! Thank you very much for your answer and for the link.