Search found 17 matches
- Wed May 31, 2017 4:17 am
- Forum: OpenSim
- Topic: Joint Reaction Forces
- Replies: 1
- Views: 146
Joint Reaction Forces
Hi OpenSim Team This is more like a theoretical question: I struggle to understand how the joint reaction forces are derived during the static opt.? Are they part of the minimization function? If yes, how are they weighted in the cost function compared to the muscle activations? And why do i obtain ...
- Thu Apr 14, 2016 1:24 am
- Forum: OpenSim
- Topic: Muscle activation
- Replies: 1
- Views: 232
Muscle activation
Hi all,
During my simulations, one of my muscles is very quickly activated to the maximum activation. Is there a muscle parameter where I can adjust the muscle in order to have it a behaving a little less aggressive?
Thanks, Jonas
During my simulations, one of my muscles is very quickly activated to the maximum activation. Is there a muscle parameter where I can adjust the muscle in order to have it a behaving a little less aggressive?
Thanks, Jonas
- Fri Apr 08, 2016 6:48 am
- Forum: OpenSim
- Topic: Warning-why?
- Replies: 1
- Views: 263
Warning-why?
Hi Osim-community, I'm working with the Arnold-Model, resp. a modified version of it. During my simulations, I get always warnings looking like this: -------------------------------------------------------------------------------------------------- WARNING: Thelen2003Muscle::computeInitialFiberEquil...
- Fri Mar 04, 2016 1:08 am
- Forum: OpenSim
- Topic: Adjust "optimal fiber length" and "tendon slack length"
- Replies: 2
- Views: 264
Re: Adjust "optimal fiber length" and "tendon slack length"
Thanks Claudio!! Exactly what I was looking for! =)
- Wed Mar 02, 2016 8:30 am
- Forum: OpenSim
- Topic: Adjust "optimal fiber length" and "tendon slack length"
- Replies: 2
- Views: 264
Adjust "optimal fiber length" and "tendon slack length"
Hi all,
I changed muscle pathes of a model. The tendon-muscle-length is now shorter or smaller.
How do I need to adjust the OFL and TSL so that is appropriate? Is it linear?
Thanks, Jonas
I changed muscle pathes of a model. The tendon-muscle-length is now shorter or smaller.
How do I need to adjust the OFL and TSL so that is appropriate? Is it linear?
Thanks, Jonas
- Thu Jan 07, 2016 3:54 am
- Forum: OpenSim
- Topic: High residual forces
- Replies: 1
- Views: 100
Re: High residual forces
Could anybody give me some hints, please? I don't need a solution for the problem, just a list of possible factors so I can check on them?
That would help me a lot! I'm trying to solve that issue for over 5 days now... tough!
Thanks!
That would help me a lot! I'm trying to solve that issue for over 5 days now... tough!
Thanks!
- Tue Jan 05, 2016 2:48 am
- Forum: OpenSim
- Topic: High residual forces
- Replies: 1
- Views: 100
High residual forces
Hi all, I am using a slightly modified version of the two-legged arnold model and am simulating stair descending. However, my SO leads to very high residual forces (up to -900 N resp. +600 N (see attach.)). The simulation is constrained to a time where ground-forces are reacting onto my model. What ...
- Fri Nov 27, 2015 9:10 am
- Forum: OpenSim
- Topic: Linear function
- Replies: 1
- Views: 105
Linear function
Hi! Could someone explain me, what the linear function does: </CoordinateSet> <SpatialTransform> <TransformAxis name="rotation1"> <axis> 1.000000000000 0.000000000000 0.000000000000 </axis> <function name="f1"> <LinearFunction> <coefficients> 1.000000 0.000000 </coefficients> </LinearFunction> </fun...
- Thu Nov 19, 2015 6:35 am
- Forum: OpenSim
- Topic: Pathpoints when having wrap objects
- Replies: 1
- Views: 155
Re: Pathpoints when having wrap objects
Nobody who can help me? ![Sad :(](./images/smilies/icon_e_sad.gif)
![Sad :(](./images/smilies/icon_e_sad.gif)
- Tue Nov 17, 2015 8:29 am
- Forum: OpenSim
- Topic: Pathpoints when having wrap objects
- Replies: 1
- Views: 155
Pathpoints when having wrap objects
Hi all,
Again, a Pathpoint related question:
Is it possible to find the location of the virtual pathpoint, where a muscle path is bending due to wrapping objects. When yes, how to do that with Matlab?
Help is very much appreciated!!
Best, Jonas
Again, a Pathpoint related question:
Is it possible to find the location of the virtual pathpoint, where a muscle path is bending due to wrapping objects. When yes, how to do that with Matlab?
Help is very much appreciated!!
Best, Jonas