Ogden Material -> Yeoh, Neo Hookean, Mooney Riv.

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi!

 

I wanted to ask how I have to choose the parameters to get the Yeoh and the Neo Hookean material using Law 42 in Radioss: 

For Mooney Rivlin it is explained in the documentation: 

a1 = 2, a2 = -2, mue1 = 2, mue2 = -2

 

How is it for the Yeoh and for the Neo Hookean?

 

Best, J

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    Hi @jowidmer

     

    Please use LAW 94 for Yeoh.

     

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited August 2018

    Using LAW42, The Mooney Rivlin parameters C10 and C01 can be used to calculate mu and alpha,

    mu1=2*C10

    mu2=-2*C01

    alpha1=2

    alpha2=-2

    For Neo-Hooken use.

    mu1=2*C10

    mu2=0.0

    alpha1=2

    alpha2=0.0

     

    Last as suggested by Prakash for Yeoh use LAW94 which was added in RADIOSS 2017.2.

    Thanks,

    Andy

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    Thanks Andy! 

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