WARNING [4016]: SINGULARITY IN SYSTEM MATRIX FIXED

Cause

When the "Fix Singularity by Dummy Spring" option is checked on, this warning is generated to indicate that singularities developed in the process of matrix decomposition have been resolved by adding small values in the diagonal terms.  In case the "Fix Singularity by Dummy Spring" option is checked off, ERROR [2007] is generated in the same situation.

Analysis Type

All types of analyses except for explicit dynamic analysis

Related Menu

[Not Applicable in FEA NX]

Analysis Case >> Analysis Control >> Parameter >> Advanced Model Parameter...

Remedy

Since this warning is generated when insufficient constraints exist in the overall analysis model, add appropriate constraints by using SPC, MPC, rigid body elements or contact conditions to eliminate the singularities (refer to ERROR [2007]).