Hi, I found the time to continue with this subject. I have added my segments manually to the model. It looks nice when I load the model. But when I run the inverse kinematics, the joints between my segments do not behave as they should. They show lot of translation in the joints. The bushing forces ...

Hi,
I have a working multisegment tibia model and want to build it into one of the standard gait models anyhow. Is it possible to integrate it as a submodel by positioning and scaling it as a group or do I have to integrate it body by body and joint by joint into the system?

Thanks and regards
Uwe

Thanks Ayman,

I solved the problem already myself. I remembered, that a colleague of mine had similar problems. He showed me the reason: the geometry path in the preferences was wrong with a "Null\Geometry".

best regards
Uwe

Hi,
I installed v3.2 64bit and I am not able to make the bones visible (in all models). Muscles are visible.
I got a complaint during the installation process, that my Visual C++ might be too new. I ignored that, perhaps that is the reason.

best regards
Uwe

Hi thanks, I have a 6-segment tibia now working more or less (using a prescribed force), but the dynamics runs seems to crash after some few ten of milliseconds. Up to may be 20 millisecs it reacts on stop commands and I can see the expected behaviour of bending with small oscillations. Would be nic...

Thank you Jiang, it seems to work now. I first had problems to find how to manage the functions for the prescribedforce, but I found a functionset somewhere in the examples. But I am astonished, how long the integration is running for this little task. It is at 100% since a long time and always work...

Thanks Ayman and Jiang, again shortly what I want to implement: two sticks with a principally free joint in between, but the joint producing resistance when bended (bushing force?). And of course I need the possibility to induce this bending by pressing against the body who is not ground. Below my a...

Sorry, were my questions too stupid? I really need a hint, how to activate or analyse my self-written little model. The tutorials did not really help me with that. Is it possible to upload my code in a text file?

Thanks again & regards
Uwe

Thanks Ayman, perhaps you missed my correction of my last post. I have added masses and inertia and the forward::run() activated by the green arrow is working error-free now, but nothing happens on the scene. I expect, that the upper cylinder would experience the actuator force (I went up to 80 with...

Thanks again, seems to work in principle, but when running the session I get an exception: Integrating from 0 to 1000 ForwardTool::run() caught exception SimTK Exception thrown at Integrator.cpp:427: Integrator initialization failed apparently because: SimTK Exception thrown at SmallMatrixMixed.h:87...