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abishek20
Posts: 6
Registered: ‎10-06-2011

Material damping (units of seconds?)

151 Views, 1 Replies
04-01-2013 05:16 PM

I am trying to apply material damping in my material manager. I know the damping ratio based on some experiments I did. However in material manager, the information asked for is damping in units of seconds. Dashpot coeff is in units of Ns/m, so it doesnt appear like Autodesk sim needs "c".

 

How do I calculate material damping in units of seconds when I know the damping ratio for a material?

 

thanks,

Abishek

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Valued Mentor
AstroJohnPE
Posts: 505
Registered: ‎08-30-2012

Re: Material damping (units of seconds?)

04-02-2013 06:48 AM in reply to: abishek20

Hi Abishek,

 

There may be some correlation between 'c' used in engineering to represent damping and the part damping used in the software, but I have never seen an explanation. What the documentation tries to say is that you need to simulate a known case and change the material damping until you get the expected results.

John Holtz, PE
Mechanical Engineer
Pittsburgh, PA

16 years experience with Simulation Mechanical
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