Iím doing elastomer compression simulation now. The elastomer is rate dependent. Now, I have two experimental curves: one is the stress relaxation curve at the deflection rate is 360mils/min. The other curve is deflection-pressure curve at the deflection rate is 10mils/min.
I want use hyperelastic+viscoelastic material model for the simulation. Now, I do the simulation like this:
Step1. For viscoelastic, I got prony series through fit stress relaxation curve in ANSYS.
Step2. For hyperleastic, I use 2 term Moony-Rivlin model. Because I donít know the exact C10,C01, I input two estimated values for C10 and C01.
Step3. Compression simulation in ANSYS by using above material parameters. From the simulation, I can get calculated pressure-deflection curve. Adjust C10 and C01 to let the calculated curve match the experimental curve. Then can get the C10 and C01.
Is there any problem of my method? I just want to get both hyperelastic and viscoelastic parameters.