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

Table 5

The 6th nature frequencies and resonant responses of composite plate under different excitation levels obtained by experimental test and theoretical calculation.

Excitation level (g)	Experimental test		Linear calculation			Finite element iteration calculation
	Nature frequency (Hz)	Resonant response (mm/s)	Nature frequency (Hz)	Resonant response (mm/s)	Errors (%)	Nature frequency (Hz)	Resonant response (mm/s)	Errors (%)
0.3	823.4	46.7	819.8	50.2	7.5	819.8	48.2	3.2
0.4	823.2	62.4	819.8	65.5	5.0	819.6	63.2	1.3
0.5	823.0	72.6	819.8	82.9	14.2	819.5	77.9	7.3
0.6	822.9	85.6	819.8	102.5	19.7	819.3	93.2	8.9
0.7	822.8	95.1	819.8	117.8	23.9	819.1	104.4	9.8