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More services...Internal Damping in Transient Solid Mechanics
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4 Replies
Last post: February 10, 2012 4:41am UTC
April 4, 2011 8:14am UTC
Internal Damping in Transient Solid Mechanics
Hello All,
In Comsol version 4.1, I would like to know how we can assign Rayleigh damping or loss factor damping coefficients to the material properties in the Solids Mechanics while performing transient analysis, like we used to do in 3.x versions.
Thanks in advance,
Onur
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April 4, 2011 8:36am UTC in response to Onur Ilkorur
Re: Internal Damping in Transient Solid Mechanics
Hi
right click the "Linear Elastic" node and add "Damping", and set accordingly the selections and data
In general in V4 right click all nodes until lowest level, be aware that new sub nodes might appear and change depending on settings in the main physics node
--
Good luck
Ivar
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April 4, 2011 8:41am UTC in response to Ivar Kjelberg
Re: Internal Damping in Transient Solid Mechanics
Hello Ivar,
Thank you for your quick response.
Regards,
Onur
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February 9, 2012 5:15pm UTC in response to Onur Ilkorur
Re: Internal Damping in Transient Solid Mechanics
Hi,
It seems that in transient solid mechanics the damping is not taken into account. I tried to introduce a structural loss factor but whatever the value i put in the subnode "Damping" i still have the same results.
I also introduced a complex young modulus but i got the same results. Did you face this problem?? i'am on Comsol 4.2 and 4.2a
In frequency domaine evrything is ok!
Thanks
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February 10, 2012 4:41am UTC in response to Doudou Badiane
Re: Internal Damping in Transient Solid Mechanics
Structural loss factor damping works only in the frequency domain. You can use Rayleigh damping, or a material model that has built in damping, such as viscoelastic.
Nagi Elabbasi
Veryst Engineering
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