April 3, 2023 at 9:16 pmRoxas HunterSubscriber
I'm trying to simulate the gasket behavior between two flanges after the bolt preload.
The gasket is made in steel 1010 1/4 hard , the stiffness behavior is setted as flexible body not as gasket, both contact surfaces are made in aluminum.
I run the analysis with the mesh size of 2mm for both contact surfaces and 1mm for the gasket, everything has worked so far and the results look fine.
I would like to get finer contact pressure results, so I changed the mesh size and the model no longer converges... I tried different things but none of these helped me to converge.
Any ideas to help me?
Thanks in advance for your support!
April 3, 2023 at 11:52 pmAnkush ChoudharySubscriber
Could you please try reducing the Normal stiffness factor (FKN) value?
April 4, 2023 at 12:52 am
April 4, 2023 at 11:48 ampawel_rekSubscriber
Normal Stiffness Factor = 1 is basically default (what ANSYS calculates). Try reducing it to 0.1 and check convergence. Depending on a mesh quality try also different "Detection Methods". If you're using newer ANSYS release you can also play a bit with "Normal Lagrange" formulation. Hope it helps.
April 7, 2023 at 7:26 am
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