Piecewise Linear Material (Mat Law 36)

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

Hi there,

 

When defining the stress-strain curve for the material (/MAT36), should it be used the true curve or the engineering one?

 

Thanks

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2016

    Hi,

    In RADIOSS, the output are always are in terms of true values ( True stress and True plastic strain)

    Equivalent plastic strain= (Total Strain  - Elastic Strain)

    Regards

    Rahul R

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