Plastic Strain

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

Is 'Plastic Strain Along the Thickness' equivalent to 'effective plastic strain' in LS-DYNA?

 

I couldn't find anything about how this value is computed in the manuals.

 

Thanks.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2019

    Hi EigenValue

    When parts loaded beyond yield limit will start deforming plastically and strains obtained are plastic strains.

    Plastic strain along thickness is the strain in thickness direction

    Effective Plastic Strain' or 'EPS' is the Total True strain minus the Recoverable strain, so its the unrecoverable portion of the true strain beyond the yield limit. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2019

    Pooja,

     

    Thanks for your reply but where is this stated in the manual? What effective Poisson's ratio is used for the calculation?

     

    These things need to be in the manual explicitly, otherwise I cannot see how they can be used in any regulated industry.

     

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