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Kelvin Voigt behaviour of Rubber

Question asked by Michael Kuhn on Jul 5, 2018

Hello!

 

I´d like to  simulate the Kelvin-Voigt behaviour of rubber-like materials? (shown in the image below):

Deformation is slowly increasing under constant load, and slowly recovers after removing the load.

 

Is it possible to model this using the ogden material model (maybe by using creep constants?).

I´am using the ogden material model to compute the deflection of the top surface of a cylinder after talking away the load.

Model:Applied Load vs. Time
Resulting deflection of top surface:

As you can see in the third image the resulting deflection of the top surface is not showing the desired behaviour.

It seems to be instantaneous.


thanks in advance,
Michael

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