ERROR #312 - NEGATIVE COMPLIANCE

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi everybody,

 

I am running a non-linear quasi static analysis in Optistruct. I am making an optimization for a plow, I always see the same error shown below.

How can I solve it?

 

*** WARNING # 312
 In static load case 1, the compliance is negative or large 1.68109e+009.
 Optimization/buckling analysis cannot be performed.
 due to possible rigid body mode.

 

 

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