Viscoelasticity in Abaqus with UEL: frequency or time domain?

01 January 2014 0 5K Report

I have a sandwich beam with a viscoelastic core ISD112 (generalized Maxwell model). Abaqus for elements, I put the law of behavior in frequency form (complex number) directly. However, in Umat fortran I do not have the possibility of a complex number which forced me to take the time shape. This has come up with the method-3dB amortization for C3D8 elements but I get nowhere with my element in the UEL. I would like to know if the time and frequency domains can provide us with the method-3dB depreciation values.

Thank you in advance

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