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OptiStruct creating Beam Elements

User: "Annika"
Altair Community Member
Updated by Annika

Hey,

 

I want to make a static analysis of a composite part. I'm simulating a monocoque. I want to represent the axes by beam elements. As you can see in my attached file this works very well. The following is repeatedly observed when the analysis is running:

 

*** WARNING # 5628
 The compliance is negative or large 9.02038e+11.
 The rotational displacement has large magnitude, 159742 degrees (larger than 180).
 The rotational degree of freedom may not be constrained properly in the model.
      subcase id = 1
         grid id = 1
       component = 4

 

Can you please help me to solve the problem? Unfortunately i am under a lot of time pressure.

 

Thank you in advance!

 

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