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Thin Shell reference error after importing ANSYS geometry STP file

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Posts: 4
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(@arafat_alam)
Barista
Joined: 4 years ago

Hello,

I have imported a cad file drawn in ANSYS that contains all solid elements. But in LS-DYNA, all solid elements have shell in it, I do not understand why! Also, when I run the model, it gives me a thin shell reference error (snap). Why is that? How can I import the solid model as solid and eliminate this error? Thanks! 

 error2
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Negative Volume
Posts: 639
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(@negativevolume)
CEO
Joined: 5 years ago

Hi @arafat_alam,

So are individual cubes of shell elements being created around each solid element? Could you provide an image of what is happening?

If the solid elements imported correctly and you just want to get rid of the shell elements then that could be an easy fix. You can delete elements by element configuration, so in this case Shell elements.

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(@arafat_alam)
Joined: 4 years ago

Barista
Posts: 4

@negativevolume As you can see from the attached snap, there are shell inside solid. By deleting the element, the model is being reduced - so it doesn't work. Any suggestion? 

 shell error 1
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(@arafat_alam)
Joined: 4 years ago

Barista
Posts: 4

Thanks. Understood. I have found a workaround. I can create the mesh in ANSYS and then insert that input.k file in LS-DYNA. Thanks. 

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Negative Volume
Admin
(@negativevolume)
Joined: 5 years ago

CEO
Posts: 639

@arafat_alam great! Glad to hear it. 

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Negative Volume
Posts: 639
Admin
(@negativevolume)
CEO
Joined: 5 years ago

@arafat_alam see I think that I'm getting confused. You are importing CAD created in Ansys but you say that it contacts elements. I don't work with Ansys so it doesn't make much sense that you would have CAD objects and FEA elements in a single CAD file. 

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