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Strange boundary condition

Posted 2011年8月4日 GMT-4 16:28 Structural Mechanics 0 Replies

Jessica
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Hi,

I am seeing some strange behavior when assigning some boundary conditions in Structural Mechanics of V4.2.
For example, I assign a Roller boundary to the inner surface of a tube that has been cut to half axially (I am having a 2D Cylindrical problem), trying to to stretch its rubber-like material circumferentially (i.e. I want no change in radius). However, I notice that with one end of the geometry being stretched, the radius changes as well and completely ignores the Roller condition that should enforce the displacements normal to the surface zero.

Can anyone explain this?

Thanks,
Jessica
0 Replies Last Post 2011年8月4日 GMT-4 16:28
COMSOL Moderator

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