Hi,
I want to model a viscoelastic-viscoplastic analysis of fiber reinforced polymer composites undergoing mechanical loading and temperature changes in abaqus. I know nothing about umat! Can anyone help me?
Carl Chen
viscolelastic analisis should use the oscillation mode. IE, given the test systerm a stress that under the linear viscoelastic region, and doing the frequency sweep test , to see the change of storage modulus and loss modulous as a fuction of frequency .
u can refer to any rheology book .
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