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custom constraints in 3D solid mechanics
Posted 2 sept. 2011, 02:53 UTC−4 Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.2 1 Reply
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I want to simulate some eigenmode in 3D solid mechanics but I want to add some constraints in the physics. For example I want to make sure the displacement of the mode that I am simulating is only in z-direction (there is no displacement in x,y-directions). To put it more accurately it is in cylindrial coordinates and the displacement is only in polar direction. How can I do that in comsol? Can anybody give a hint?
1 Reply Last Post 2 sept. 2011, 15:15 UTC−4
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Posted:
1 decade ago
Hi
one way is to use aprescribed displacement BC and just define x,y = 0 and leave Z free, or in 2D axi r=0 and leave again z free
Another way is to leave the modes appear and sort the one related to "z"
But adding BCs mean that you are altering the model w.r.t. a free free case
--
Good luck
Ivar
one way is to use aprescribed displacement BC and just define x,y = 0 and leave Z free, or in 2D axi r=0 and leave again z free
Another way is to leave the modes appear and sort the one related to "z"
But adding BCs mean that you are altering the model w.r.t. a free free case
--
Good luck
Ivar