Vibration Response Evaluation under Shock-Type Loading with Emphasis on Finite Element Model Updating

Table 2

First four natural frequencies (rad/s) with analytical, numerical, and experimental methods.

Mode number	Analytical frequencies	Numerical frequencies (25 elements)	Numerical frequencies (4 elements)	Experimental frequencies
1	30.34	30.34	30.34	29.34
2	411.78	411.72	411.98	341.12
3	1309.29	1309.06	1317.16	1151.41
4	2715.07	2717.52	2777.81	2462.11