ERROR 312
Hi
I am new to hypermesh and currently I'm working on topology optimization of control arm. But i'm getting the following error
A fatal error has occurred during computations:
*** ERROR # 312 ***
In static load case 1
the compliance is negative or large 9.504442E+10
Optimization/buckling analysis cannot be performed
due to possible rigid body mode
FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED).
I know it is due to rigid body mode and tried to change my constraints by varying dof's but still it doesn't run.
Can anyone explain me about this error?
Hi Ravi,
This is usually because of incorrect or insufficient BC's, Model not being connected properly with other components, incorrect model units etc..
To cross check, please run a free-free normal modes ( No BC's) extracting say some 20 modes and If possible please share us fem & out file.
Regards
Rahul R