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Typical warning message from LUSAS Solver text output file (*.OUT):

***WARNING*** CANNOT CHOOSE LARGEST EIGENVALUES IN A BUCKLING ANALYSIS : SMALLEST ONES CHOSEN BY DEFAULT (RDEGCT PROCESSOR)


Most common causes & links to solutions 

This is because the option Eigenvalues required is set to Maximum rather than Minimum in the Eigenvalue Control for the loadcase in an Eigenvalue Buckling Analysis. In a Buckling analysis you would normally want the first mode as this will be the lowest load factor at which buckling occurs.

 


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