Analytical Modeling of Hard-Coating Cantilever Composite Plate considering the Material Nonlinearity of Hard Coating

Table 8

The comparison of resonant frequency/Hz.

Item	Excitation level/g
	0.3	0.4	0.5	0.6	0.7
Experiment	813.35	813.15	813.00	812.90	812.80
Linear calculation	820.89	820.89	820.89	820.89	820.89
Difference	0.93%	0.95%	0.97%	0.98%	0.99%
Nonlinear calculation	820.64	820.58	820.50	820.42	820.37
Difference	0.89%	0.91%	0.92%	0.92%	0.93%