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Introduction of the hyperfoam model in ABAQUS

Dear Researchers,


I am trying to find out which was the first ABAQUS version, wchich includes the hyperfoam material model. I haven't found any version history about this. Could someone tell me the very first version of ABAQUS in which the hyperfoam model was included?


Thank You!

Kind Regards,

Attila KOSSA

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Illustration of Consistent Tangent Tensor

I am looking for a good geometric illustration of the consistent tangent tensor (corresponding to a stress update procedure).

The theory is "clear" for me, but sometimes i am confused when i wanted to imagine the illustration of the difference between the consistent tangent and the continuum tangent tensors.

Could someone recommend me a textbook or paper that presents a good schematic illustration ?

Best Regards!


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