I want to find a non-linear displacement graph of a Silicone membrane when applying different uniform pressure on it.
This is what I do:
I have a round membrane with 20 microns radius and 1 micron thickness made of silicone that is clamped around perimeter as you can see in the picture below.
I add uniform pressure that is normal to the surface of the membrane.
Then I run the analysis and get the displacement.
The problem is that if I double the pressure the displacement result is doubled as well and I know that it should not be this way. What am I doing wrong? Maby I should use another analysis method or change something in the model? Any help would be apprecierated
P.S. I am using the Static simulation tool.
As for material properties I used:
|Elastic Modulus in X||1.48e+011||N/m^2|
|Poisson's Ration in XY||0.1773||N/A|