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Viscoelasticity model using Ansys

I need to model viscoelastic behavior of polymer. I have storage modulus and loss modulus data as a function of temperature. I have found to determine the Prony series coefficients Ansys need shear and bulk modulus as a function of time-temperature. Does it mean complex shear moduls which can be calculated from storage and loss modulus. Can anyone advise me how I can use my data to calculate Prony series coefficients using Ansys?

Cyclic thermal load

I need to apply cyclic thermal load on a layered structure and want to see the stress generated and structural displacement using Ansys. How can I apply cyclic thermal load? iI tried to use Load Step Opts. Since I am interested only in stress-displacemnt, I used structural element. But if i use structural element, it doesn't give me Time/frequency option under load Step. Do i need to use coupled element? Is there any other way to apply cyclic thermal load to see stress-displacement? Thanks!

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