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structural- joints- conditions

Posted Sep 15, 2010, 8:14 a.m. EDT 2 Replies

Stephan Struggl
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Hello!

Does anybody knows to take different clamping conditions into account. The joints influence the damping of a structure in a very dominant way. Is there any possibility to modell such a structural behavior?

Thanks for any reply!

kind regards,
Steve
2 Replies Last Post Sep 16, 2010, 4:50 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Sep 16, 2010, 2:42 a.m. EDT
Hi
clamping, ot bolting is a delicate issue, in general with structures, the question about structural (material damping) and assembly damping is a non-trivial question. Specially how to assess the damping values and to integrate into a model.

I mostly distribute the damping as an average in nhe "beta" variable, when needed (for modal and transfer function analysis), I do not have a specifc "clamping" approach

--
Good luck
Ivar
Hi clamping, ot bolting is a delicate issue, in general with structures, the question about structural (material damping) and assembly damping is a non-trivial question. Specially how to assess the damping values and to integrate into a model. I mostly distribute the damping as an average in nhe "beta" variable, when needed (for modal and transfer function analysis), I do not have a specifc "clamping" approach -- Good luck Ivar
Stephan Struggl
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Posted: 1 decade ago Sep 16, 2010, 4:50 a.m. EDT
Hi Ivar!

I did the aproach vie "beta" before, another method would help to interpret the real mode shapes in more detail...
Thanks for your help!

kind regards,
Steve
Hi Ivar! I did the aproach vie "beta" before, another method would help to interpret the real mode shapes in more detail... Thanks for your help! kind regards, Steve

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