Error #312

Shiva Far
Shiva Far Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I am trying to do lattice optimization on a simple block with structural boundary conditions. I keep getting Error #312 with the explanation below:

In static load case 1 
 the compliance is negative or large -5.91187e+17.
 Optimization/buckling analysis cannot be performed.
 due to possible rigid body mode.

 

I tried constraining different dofs but it did no good. would really appreciate any help regarding this issue.  Attached you can find the model. Thanks!

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited September 2019

    You have modelling issues in your model.There is no node to node connectivity between design and non design.Use free edges or faces option to clear same.

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