Analysis of Nonlinear Vibration of Hard Coating Thin Plate by Finite Element Iteration Method

Table 4

The first 8 nature frequencies of hard coating composite plate under 0.3 g excitation level obtained by finite element iteration calculation and experimental test.

Modal order	1	2	3	4	5	6	7	8
Experimental test (Hz)	47.0	132.1	287.5	470.4	536.1	823.4	918.3	997.2
Finite element iteration calculation (Hz)	46.6	132.6	288.4	463.4	530.5	819.8	911.2	995.3
Analysis errors (%)	0.85	−0.38	−0.31	1.49	1.04	0.43	0.99	−0.11