WARNING [4108]: EIGENVECTORS MAY NOT BE ORTHOGONAL

Cause

This warning informs that the eigenvectors have deviated from the orthogonality among themselves due to the inaccuracy of the calculated eigenvalues caused by the numerical properties of the given eigenvalue problem.

Analysis Type

Mode-based analysis (Eigenvalue analysis)

Related Menu

Analysis >> Analysis Case >> General >> Eigenvalue >> Analysis Control >> General...

Remedy

Adjust the range of the eigenvalue calculations, or checking on the Sturm sequence check may also help resolve the problem.