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Deformation Gradient in VUMAT

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Alzerland

Topic starter

Mar 15, 2016 6:07 pm

(@Alzerland)

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Joined: 6 years ago

Hey,

How can we use Deformation gradient in VUMAT abaqus explicit subroutine?

I am modelling user defined composite material. I have isotropic and anisotropic material properties in the model. For Isotropic model I have solved my equations using Stretch tensor but for Anisotropic model I need deformation gradient or If I can get rotation tensor and that can be multiplied with stretch tensor, not sure though.

Can anyone please help me, I am really badly stuck:(