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Shell181 element in contact problems? Ansys

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lavecchiasignora

Structural
Mar 3, 2011
48
SE
Hi all I really need your help. Is it completely wrong to analyze a layered composite structure with the shell181 element if I should analyze the results in the contact area? I mean I cant get the stresses in the thickness direction but since I am using Tsai-Wu equation to predict failure that formula only uses 2D, i.e. plane stress assumptions if im only looking at a lamina at one time?

thank you
 
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