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Material definations

User: "Altair Forum User"
Altair Forum User
Altair Employee
Updated by Altair Forum User

I am doing nonlinear analysis, so I need an information regarding material definations.

 

Do I need to define ture stress-strain values or engineering stress-strain values are enough?

will Hypermesh convert engineering data to true values?

 

Please hlep me on this.

 

Thanks

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    User: "Rahul_P1"
    Rahul_P1
    Altair Employee
    Updated by Rahul_P1

    The data entered should be in true stress/true strain

    User: "Rahul Rajan_21763"
    Rahul Rajan_21763
    New Altair Community Member
    Updated by Rahul Rajan_21763

    Hi,

     

    There are some material law in which you have to provide nominal stress strain.Refer Radioss solver documentation for material law.

    No we dont have any option which converts engineering stress strain to true stress strain in Hypermesh.

     

    Regards

    Rahul R 

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi Arjun,

     

    Does your analysis has large displacements or small displacements?

     

    If there are large displacements involved, which means there is a change in the geometry as the load application increases. In this case you need TRUE-stress Vs Strain curve.

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    OP
    Updated by Altair Forum User

    Hello Everyone,

     

    Thanks for your reply and solutions. Helped a lot.

     

    Regards

    Arjun

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