rayleigh damping instead of visco-el material?
rayleigh damping instead of visco-el material?
(OP)
Hi
I have to model rubber in a direct time integration analysis where the internal material damping of the rubber at high frequencies should be modelled as well. I would prefer to use the Rayleigh damping to estimate these damping effects in the structure than setting up a visco-elastic material model. I found some specific damping ratios and would estimate the coefficients alpha and better for the Rayleigh damping. However I suppose in principle it should work, I’m not sure if this correct and which effects are neglected by the use of the Rayleigh damping instead of a visco-elastic material model. Has anybody experience with such problems or can anybody give some references how modelled these damping effects?
Thanks in advance
stawrogin
I have to model rubber in a direct time integration analysis where the internal material damping of the rubber at high frequencies should be modelled as well. I would prefer to use the Rayleigh damping to estimate these damping effects in the structure than setting up a visco-elastic material model. I found some specific damping ratios and would estimate the coefficients alpha and better for the Rayleigh damping. However I suppose in principle it should work, I’m not sure if this correct and which effects are neglected by the use of the Rayleigh damping instead of a visco-elastic material model. Has anybody experience with such problems or can anybody give some references how modelled these damping effects?
Thanks in advance
stawrogin





RE: rayleigh damping instead of visco-el material?
Details of this approach may be found on the web-site:
http://www.ViscoData.de
and / or contact me at
machenba@parker.com
good luck !!!