ERROR [2122]: NO FLEXIBLE-BODY MODE

Cause

When topology optimization is performed using the mode-based analysis (transient response/frequency response/modal), this error is generated when only the rigid body modes exist because of insufficient boundary conditions.

Analysis Type

Topology optimization using mode-based analysis

Related Menu

None

Remedy

Since the analysis becomes meaningful with the presence of flexible body modes, add proper boundary conditions and thus remove the rigid body modes.