Modeling Tuned Mass damper in NX Nastran
Modeling Tuned Mass damper in NX Nastran
(OP)
any body has an idea on how to a viscoelastic tuned mass damper on Nastran
Thank you
cae magic
Thank you
cae magic
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Modeling Tuned Mass damper in NX Nastran
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RE: Modeling Tuned Mass damper in NX Nastran
This is easily modelled using mass and spring elements.
I have not heard of a visco elastic tuned mass damper, but off course that doesn't mean i can't be wrong here.
RE: Modeling Tuned Mass damper in NX Nastran
Thank you so much for your reply , I have a visco-elastic tuned mass damper in a structure which I would like to model , since the mass added is rubber , hence there's some damping , if an equivalent in terms of springs, dampers and mass to be made , how do we model it ?
RE: Modeling Tuned Mass damper in NX Nastran
caemagic - it should be representable as combination of ideal mass, spring, damper elements. Exactly how to arrange them and what values to use... maybe start with whoever sold/built the damper?
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(2B)+(2B)' ?
RE: Modeling Tuned Mass damper in NX Nastran
I suppose a viscous or rubber engine damper is something like this?
regards
rob
RE: Modeling Tuned Mass damper in NX Nastran
Thank you so much for your reply , it is so exciting for to share knowledge. Please refer to the attachment for further detail of the problem , I have a machine which has a vibration problem , i add these visco-elastic materials, rubber. by trial and error , I reduce the response. Now that I would to model the material in SOL 103 , I thought that a combination of springs and dampers should do , however , I dunno how to test it. I am not sure whether it's a correct practice to just model the damper into a spring and mass only. Please refer to attachement for further detail