How to simulate dynamic stiffness of rubber comoponent?!

[byhyj]

Hi:
I have analyzed rubber components in ABAQUS for six years. For recent years I have studying how to simulate the dynamic stiffness of rubber component and I only know that the frequency domain viscoelastic material model can describes frequency-dependent material behavior in small steady-state harmonic oscillations. However I don’t’ know how to simulate it in ABAQUS.
For example, a rubber component is subjected to dynamic loading at 5Hz with amplitudes ± 3mm in x direction, however, how to do it in ABAQUS.

[Jorgen]

Hello byhyj,

I am not quite sure I understand your question. Are you interested in modeling a dynamic loading situation with imposted vibrational boundary displacements? If so, is your question related to how to implement the simulation in ABAQUS, or are you more interested in how to model the material behavior of the rubber component?

- Jorgen

[byhyj]

Dear Jorgen:
Of course, my questions are how to implement the simulation of dynamic stiffness in ABAQUS. I don't find related example from ABAQUS. So, please provide some advice or some examples to me.OK!
thanks you very much.
huang youjian

[Jorgen]

To capture dynamic stiffness in ABAQUS you first of all need to run a dynamic simulation, i.e. include inertial effects. Then, if you are interested in capturing how the storage modulus and loss modulus depend on amplitude strain rate, etc, you need to use an appropriate material model. The first choice is to use linear viscoelasticity, the other option is to use the *Hysteresis option. If these material models are not accurate enough for your application, then there are also more advanced and accurate material models that can be used as external subroutines (UMATs).

- Jorgen