Adding material properties from force-deflection curve

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

I have the force deflection data for the rubber - Neoprene.

I want to define material properties using this data. How do I do that?

I am using Radioss Bulk Data

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2016

    Which version of Hyperworks you are using?Radioss bulk rebranded as Optistruct.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2016

    I using Hypermesh 12.0

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2016

    With version 12 of Radioss bulk have limited material model.may be latest version14.0 would have some more on Rubber (Hyperelastic  material MATHE)

    With Radioss solver you can check same.

    The Neoprene rubber can be modeled with :
    •    material /MAT/LAW42, /MAT/LAW62 + VISC/PRONY in case the material almost incompressible (Poisson ratio = 0.495)
    •    material /MAT/LAW38 or /MAT/LAW70 in case the material highly compressible (Poisson ratio = 0)
    •    material /MAT/LAW38 in the other cases.

    Compression test with different load speed are necessary to define the material. The compression test should be conduct up to densification phase. Any other test (tensile, shear, frequency answer, relaxation test,…) will help to better fit the material law.
     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2016

    Okay.

    Thanks for replying

    Will try your suggestions.

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