thin core

Hello;

I have a problem of extracting structural damping coefficient of a sandwich plate type steel / polymer / steel. I have already entered the shear modulus of the polymer in ABAQUS G = G0 (iw) / (1 + iw) With the: *viscoelastic, frequency=TABULAR

I do not know if my approach is right?

My inp file has this form:

*NODE, NSET=ALLNODES, SYSTEM=R

..

*ELEMENT, TYPE=S4      , ELSET=THIN-SHELL1

..

*SHELL GENERAL SECTION,

 ELSET=THIN-SHELL1 ,