Hi everyone,
in a multi-Body Analysis, I want to apply a force which is always to stay normal to a surface (i.e. it should maintain its orientation with regard to the applied node). I made a test model to see how I can achieve this (see attached). I would expect that the Body rotates endlessly when the force moves with the Body.
Here is what I tried:
- Define the MBFRC with three nodes of the rigid Body on which it is applied --> not working, the force is only active in the global x-axis direction
- Use a vector (again, defined with three nodes of the rotating body) as an intermediate --> not working
- Use a local coordinate System (tried all CORDxR Systems) --> not working
The help states that CORD1R 'moves with GRID points defining the system' in a geometric nonlinear analysis. This does not seem to apply to multi-Body Dynamics Analysis (see attached example). The coordinate System stays static in the Simulation. The MBFRC doesn't even respect the x-axis direction of the local coordinate System, as the Body rotates in the other direction.
I can't get it to work and any help would be greatly appreciated 
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edit: Sorry, I forgot: I use Optistruct.
Unable to find an attachment - read this blog
