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Rubber and Ogden

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Valou

Mechanical
Apr 18, 2005
6
Hello,

I'm working with the behavior law of Ogden. I have the terms (from tests...) which define the compressiblity of the material. Unfortunately the code I'm using needs the Poisson's ratio. How can I define the Poisson's ratio with the béta_i of the law?
I know that there is a formula ( Nu=béta/(1+2*béta) ) in the documentation of ABAQUS...but I don't know where it comes from...

Thank you.
 
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