WARNING [4109]: EIGENVALUES ARE TOO CLUSTERED TO EVALUATE. SOME EIGENVALUES MAY BE LOST

Cause

In case too many eigenvalues are duplicated, this warning is generated when certain eigenvalues are omitted from calculations depending on the specified range of calculations or the number of eigenvalues to be calculated.  For buckling analysis, such problems may occur due to numerical problems associated with very small loadings.

Analysis Type

Mode-based analysis (Eigenvalue analysis)

Related Menu

None

Remedy

For models such as cylindrical shells, too many duplicated eigenvalues can emerge due to the characteristic.  In buckling analysis, adjust the magnitudes of loads.