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Tie / cohesive contact between shell surfaces - Abaqus CAE.

Tie / cohesive contact between shell surfaces - Abaqus CAE.

Tie / cohesive contact between shell surfaces - Abaqus CAE.


I am looking to make a simulation of a pressure vessel with a mix of metal (titanium) and composite parts. I am especially interested in the joint interface where the materials are bonded together.

I could make the simulation work fine and give realistic results when I only had two shells interacting with a tie contact. It was when I wanted to add a third layer (as shown below) to the model things started to go wrong - numerical singularities and unrealistic results. I have tried using cohesive contacts also according to instruction videos found on youtube with no good results.

x x x x x - tie contact
x x x x x - tie contact

How do you go about modelling these kinds of joint interfaces, any tips?

RE: Tie / cohesive contact between shell surfaces - Abaqus CAE.

How are these parts connected in real life ? Are any fasteners used ? Also, can you share a picture showing how this region was modeled ?

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