Discussion Forum

August 20, 2010 5:50am UTC in response to Carol Platon

Re: I need an assembly tutorials

Hi

your methodoly is quite OK from my point of view, I would only add:

after importing the CAD model, group the items with a "union" or "composite" so that you define only contact surfaces, set the "finish" to assembly.

Note keep these "contact surfaces rather small, i.e if you have a large plate and the contact is potentially only in one corner, split the surface so the source and destination areas are roughly +/-2-3x the same size to keep the model simpler

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Good luck
Ivar

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August 22, 2010 5:56pm UTC in response to Carol Platon

Re: I need an assembly tutorials

Hi

What about using a -k*(U1-U2) where k is the spring constant and U1, U2 the average displacement "u" or "v" or whatever adequate combination with the surface normal of the regions you link (via an integration coupling variable). For the damping it's something like -d*(Ut1-Ut2) pls check carefully the signs (I might have them wring. Here Ut1, Ut2 are the average (via integration coupling variables) of ut or "vt" or whatever ...

Basically it's writing out the physics, no ? That's all what COMSOL is about (for me;)

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Good luck
Ivar

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