Elastic Plastic Piecewise Linear Material (LAW36)

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

Hi everyone!

I used Elastic Plastic Piecewise Linear Material model to analysis

There are some elements not follow the material model perfectly - at some plastic strain values.

Please show me what is the reason!

Thank you very much!

Tagged:

Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    HiHo,

    nobody is perfect, maybe the elements also not...

    Sry, not enough informations ;-)

    Regards,

    Mario

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    Hi everyone!

    I used Elastic Plastic Piecewise Linear Material model to analysis

    There are some elements not follow the material model perfectly - at some plastic strain values.

    Please show me what is the reason!

    Thank you very much!

    Hi,

    You could try with different element formulations (shell or solid) there are several element formulations in radioss and you should also check the material compatability with the element formulations.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    You may also want to take care in how you are viewing the results. If the results are extrapolated or averaged, they will not exactly match your material definitions. Look at the actual solver outputs (i.e. centroidal or integration point results) for a more accurate comparison to the material model.

Categories