Stress strain definition in MATS1 Card

hiranwale_bharat
hiranwale_bharat Altair Community Member
edited October 2020 in Community Q&A

Hello Everyone,

 

I want to know that in the MATS1 card where we define stress strain curve, the value of strain is in percentage or what?

 

Regards,

Bharat

 

 

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Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited September 2015

    Bharat,

     

    The stress strain curves are input as real values in the TABLES1 card and referenced in TID in the MATS1

     

    The help OptiStruct > Reference Guide > Input Data > Bulk Data Section:

    MATS1

     

    and the student guide has ample information on the topic - http://www.altairuniversity.com/free-study-guide-book/          

  • hiranwale_bharat
    hiranwale_bharat Altair Community Member
    edited September 2015

    Hello Rahul,

    Thank you for the reply,

     

    But I still have my doubt uncleared. Suppose I have a rod of length 100 mm and deflection is 10 mm. strain is (10/100)=0.1.

     

    My question is that while creating MATS1 card ,whether I should input strain as 0.1 or 0.001?

     

    Regards,

    Bharat

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited September 2015

    The data is not in percentage, the data entered should be in true stress/true strain

     

    See section 19.9 of the ebook, the examples in the book using mat s1 and also the tutorials in help. 

  • hiranwale_bharat
    hiranwale_bharat Altair Community Member
    edited September 2015

    Hello Rahul,

     

    Thank you very much for the reply.

     

    Regards,

    Bharat

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