Search found 9 matches
- Mon Jun 19, 2017 8:39 am
- Forum: OpenSim
- Topic: Differentiate between active and passive muscle forces
- Replies: 1
- Views: 384
Differentiate between active and passive muscle forces
Hey :) , I am analyzing the effect of active muscles forces in an impact scenario. For this, I have used DeMers drop landing model as reference. I simulated two scenarios, one with controllers (muscle fiber stretch controller) to excite the muscles and second is without any controllers (a passive mo...
- Sun Jun 11, 2017 2:18 pm
- Forum: OpenSim
- Topic: About clamping the range of motion
- Replies: 1
- Views: 134
About clamping the range of motion
Hey Guys, I have a lumbar joint defined by rotational motion and the motion has been clamped to a fixed range. The problem is that, when I simulate my model, the rotation happens beyond the range that I have mentioned (despite me clamping it). I tried looking for the issue but couldn't find any. You...
- Thu Jun 01, 2017 7:12 pm
- Forum: OpenSim
- Topic: Need help with simulation issues
- Replies: 0
- Views: 144
Need help with simulation issues
Hello :) , I am trying to study the effect of acceleration on the vehicle occupant. For this purpose I am using a modified version of Raabefullbody model. I have modeled the occupant seat as an half space and I have restricted its motion in a specific direction using slider joint with the ground. I ...
- Thu Jun 01, 2017 6:12 am
- Forum: OpenSim
- Topic: Muscle seperation from the body during simulation.
- Replies: 5
- Views: 227
Re: Muscle seperation from the body during simulation.
It sounds like the muscle may be attached to a different body than the geometry you're visualizing. It would be easier to diagnose if you provide the files and instructions to reproduce the issue. I solved this problem. There were issues with the contraintset and on rectifying those the model behav...
- Wed May 31, 2017 2:04 pm
- Forum: OpenSim
- Topic: Muscle seperation from the body during simulation.
- Replies: 5
- Views: 227
Re: Muscle seperation from the body during simulation.
What are the muscles connected to? It sounds like you have connected the attachment points to the Ground; when the simulation begins, the bodies move while the Ground stays stationary. Hey James, I have connected the muscles to specific points on the respective bodies. The problem is that the muscl...
- Wed May 31, 2017 11:53 am
- Forum: OpenSim
- Topic: Muscle seperation from the body during simulation.
- Replies: 5
- Views: 227
Muscle seperation from the body during simulation.
Dear Friends, I am trying to run a forward dynamic simulation to depict an acceleration/deceleration of a car occupant. Since the simulation took time, I initially ran the analysis without muscles in order to verify the contacts and prescribed forces. The simulation worked fine. But when I added mus...
- Sat Feb 04, 2017 3:34 pm
- Forum: OpenSim
- Topic: Induce acceleration on a body
- Replies: 1
- Views: 229
Induce acceleration on a body
Hi
,
I have a .stl file in opensim and I want to induce an acceleration on this object.
I would like to know if this is possible and if yes then how?
I also came across prescribed force but I am not sure as how to use it
.
Kindly let me know.
Thanks![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
![Smile :)](./images/smilies/icon_e_smile.gif)
I have a .stl file in opensim and I want to induce an acceleration on this object.
I would like to know if this is possible and if yes then how?
I also came across prescribed force but I am not sure as how to use it
![Question :?:](./images/smilies/icon_question.gif)
![Question :?:](./images/smilies/icon_question.gif)
Kindly let me know.
Thanks
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
- Mon Jan 16, 2017 7:24 am
- Forum: OpenSim
- Topic: Thesis on building active muscle models in opensim for investigating vehicle frontal crash
- Replies: 3
- Views: 665
Re: Thesis on building active muscle models in opensim for investigating vehicle frontal crash
Thank You Tom. Will try this approach out. ![Smile :)](./images/smilies/icon_e_smile.gif)
![Smile :)](./images/smilies/icon_e_smile.gif)
- Sat Jan 14, 2017 5:58 pm
- Forum: OpenSim
- Topic: Thesis on building active muscle models in opensim for investigating vehicle frontal crash
- Replies: 3
- Views: 665
Thesis on building active muscle models in opensim for investigating vehicle frontal crash
I am intending on building active muscle models in opensim for using them for investigating vehicle frontal crash and I would like compare the results with MADYMO. I need to input force data into the muscle or keep the muscles activated and then induce acceleration on the entire model before bringin...