Dear all,

I want to start a new project on human seat interaction in the context of automated driving. I am wondering if you have any idea that it is possible to use OpenSim for that. I would appreciate it if you could provide me with any information.

Yours,
Mojtaba

Hi everybody,

I have a hand and wrist model. CMC simulation works for index-thumb movements only if I start it from 0 degrees initial position. It fails if I change the initial position even for locked coordinates. Do you have any idea how to solve this ?

Yours,
Mojtaba

The imported values are measured and make sense .
Another colleague of mine had the same problem with foot toes and he had to scale them to be at least1E-4 to make CMC work.
So I guess this is a mathematical issue.

Thanks for the reply.

So you do not have any idea to solve the issue?

Yours,
Mojtaba

Hi all, I have a hand model with measured small inertial properties (1E-7). I have a problem running CMC during finger flexion. it gives vey large position errors. Multiplying the properties by 1000 solves the problem . I tried to solve the problem by having passive forces with coordinateLimitForces...

thanks for your consideration, I tried to do that in this way : wrap=WrapCylinder(); wrap.setName(name); pointVec3Prop = wrap.getPropertyByName('translation'); PropertyHelper.setValueVec3(0.01,pointVec3Prop , 0) but I ran into this error : "Java exception occurred: java.lang.RuntimeException: Bad dy...

Hi,

Is it possible to set the properties "translation" and "xyz_body_rotation"for WrapCylinder in opensim API?

Yours,
Mojtaba

Hi Alex,

I have the same problem! I am wondering if you find a way to set these parameters in opensim API? if so could you share it with me?

Yours,
Mojtaba

Hey James,

Thanks for reply

Hi, I want to define a constraint between two points . distance between them should be constant. There is a wrapping surface between these two nodes, so It is not possible to use "ConstantDistanceConstraint". In other words I need a constraint that take account the wrapping surface as well. Do you h...