Meaning of different strains in post-processing ?

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

What is the meaning and significance of Plastic strain (s) and von Mises (t) strain? What is the difference between the two?

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018
    Altair Forum User said:

    What is the meaning and significance of Plastic strain (s) and von Mises (t) strain? What is the difference between the two?

     

    Maybe : https://dianafea.com/manuals/d944/Analys/node405.html

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    Hi,

    Plastic strain is the strain in which the deformed body does not return to its original shape after the removal of the applied force. The plastic strain value is calculated by the solver whereas the von Mises strain is calculated by the HyperView. HyperView calculates the von Mises strain from the six strain components.

     

    vonMises Strain =

    computed_results_formula6

     

    where:

    computed_results_p1, computed_results_p2, computed_results_p3 represent the principal strains as calculated above for a strain tensor.

    computed_results_v is the Poisson ratio set to a default value of 0.5.

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