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Uniaxial Compression vs Biaxial tension  


hvtho
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(@hvtho)
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Joined: 2 years ago

Hi,

I want to model microcellular PU foam in ansys by using 3rd order ogden foam material model . I wonder that can i use Biaxial tension test data instead of uniaxial compression test data to curve fit. I know biaxial tension can be used instead of uniaxial compression for nearly incompressible materials, but how about compressible foam? I want to remove friction between specimen and test apparatus so biaxial test can be helpful.

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Jorgen
Posts: 3835
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(@jorgen)
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Joined: 2 months ago

Unfortunately that will not work since the material is compressible 🙁 

If you are interested in more details then check out my book.

-Jorgen

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