Hyperelastic material model to fit tension, compression, shear and plane strain tension tests simultaneousely

Dariush Tari
Dariush Tari Altair Community Member
edited June 2021 in Community Q&A

Hi 

I have experiments for uniaxial tensile, compression, shear and plain strain tensile. Which one of the Hyperplastic material models in Radioss can effectively fit them? 

Regards,

Dariush

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Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited October 2020

    Hi,

    You can use /MAT/LAW69 to fit material uniaxial test data for tensile and compression.  We currently don't have any material model that can include the shear and plain strain tensile data in the fit.  However, we will be releasing more advanced fitting tools in the near future. 

    In the Radios help there is an Example RD-E: 5600 Hyperelastic Material with Curve Input that goes over the process. 

    More general information is also available in the help at,

    User Guide
    Explicit Structural Finite Element Analysis
    Materials
    Hyperelastic Materials

    Thanks,

    Andy

  • tuan trinh
    tuan trinh Altair Community Member
    edited June 2021

     

    1>is it really necessary to crate tension, shear, beding?

    If necessary, which is necessay in all (K, C, A, D, function…)

    How to decide value of K,A,..

    2>function  -ID-tension

    How to decide value of Function graph? If material in model include Fe, rubber, alumilum

     

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