Bifurcation Study of Thin Plate with an All-Over Breathing Crack

Table 1

First three-order frequencies of cracked and intact plates.

	First-order natural frequency (Hz)		Second-order natural frequency (Hz)		Third-order natural frequency (Hz)
	Theoretical results	FEM	Theoretical results	FEM	Theoretical results	FEM
Intact plate	23.9874	25.101	38.3798	41.853	62.3672	68.485
	23.9279	24.987	38.1120	41.359	62.1117	68.071
	23.8698	24.941	38.3798	41.749	61.8510	67.468