chlif_med's blog
Problem of extracting structural damping
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 ,
ABAQUS : Programing Sandwich plate with Complex Shear modulus core
Hello;
To study the vibration of a sandwich plate I evaluate the complex shear modulus with the GHM method.
Can you tell me how I can enter the complex shear modulus in ABAQUS:
Gv := 0.142*((w/(2*Pi))^0.494)*(1+1.46*I)*1e6
(I^2=-1 , w =2*Pi*f , f: frequency)
Greetings