WARNING [4010]: FAILED TO FIND APPROPRIATE SHIFT FOR EIGEN SOLVER. (ZERO MASS MATRIX)

Cause

This warning is generated when a proper shift value for eigenvalue calculation cannot be found.

Analysis Type

Mode-based analysis (Eigenvalue analysis)

Related Menu

None

Remedy

The main variables in eigenvalue analysis are mass and stiffness; thus, check if the mass density has been correctly entered in material properties or if the unit system for density has been properly defined.  Also, in case additional mass has been added using a mass element, check if it has been defined in the mass unit.