1. The problem statement, all variables and given/known data I'm working on the vibration of a plate made of a viscoelastic material. I chose 2 types of young's modulus: - A constant complex young's modulus: E=E'+iE'' - The generalised maxwell young's modulus in which the complex part is frequency dependent. I'm trying to write the strain bending energy equation starting from the equilibrium equations. I think the only change will be in the Hooke's Law. So: 1) What are Hooke's Law in these cases. 2) Is it possible to write the the strain bending energy equation for this plate similarly to the classical case but with a complex component? Thanks for the help.