Nozzle model with shell elements for FEA

[FFEA]

In buliding a model of a reinforced nozzle with shell elements, what is the best approach? I'm thinking in two options:
[ul]
[li]MODEL 1 (Red color): Two separated shells with a bonded contact between them.[/li]
[li]MODEL 2 (Blue color): One shell with the combined thickness.[/li]
[/ul]

Thank you very much.

 

[TGS4]

It depends on the purpose of your analysis.

What failure mode are you trying to demonstrate protection against?

 

[FFEA]

With this model, I am trying to demonstrate protection against plastic collapse with a linear elastic approach.

 

[TGS4]

Model 2 will likely suffice. Why not use the elastic-plastic analysis method?

 

[FFEA]

Thank you for your response TSG4. I can’t use elastic-plastic analysis method due to software license limitations. At this moment I can only model linear elastic materials.