Model-Based Dynamic Structural Modification of Machine Tools

Table 1

Considered beam mode shapes and natural frequencies for three first modes. Comparison of FEM and experiment results.

FEM	1st frequency, 113 Hz	2nd frequency, 307 Hz	3rd frequency, 593 Hz
Test	1st frequency, 115.2 Hz; Damping, 0.9153%	2nd frequency, 314.8 Hz; Damping, 0.8836%	3rd frequency, 607.9 Hz; Damping, 0.9859%