Thank you so much Peter for the response.

Please  find more details below.


Did you turn on Large Deflection? -  YES

Did you create a hyperelastic material model for the rubber? - YES

Did you set the elements on the rubber part to have Reduced Integration? - YES

It looks like the rubber is flush with one side of the metal carrier, and is thicker on only one side. - the carrier is symmetric at the mid plane with rubber gasket. I just designed it this way for easy solution and the bonded contact with top surface will ignore the gap on the top.


I can not do a 2D analysis as the cross-section of the joint varies at different location and also the bolts are different size.

I have tried analysis with displacement, it gives me precise result but I am trying to determine the optimum clamp load to get minimum required gasket pressure, In the best case, the gasket will have different closure value in a range. The displacement gives me a single closure value.


The total gap in the picture is about 0.7mm. The top surface of the carrier and rubber is bonded with top component. The bottom is a frictional contact.

The solution is bisecting and in the end, it doesn't converge.

Without metal carrier - it converges but the rubber is compressed all the way (Total gap -2.3mm), which is not right

Let me know if you any questions.

Thank you so much.