A Comparison of Vibroacoustic Response of Isotropic Plate with Attached Discrete Patches and Point Masses Having Different Thickness Variation with Different Taper Ratios

Table 5

Comparison of natural frequency variation of plate with attached four patches with different taper ratio ().

Case	Mode	Natural frequency
		= 0	= 0.3	= 0.6	= 0.9
I	I	85.102	83.311	82.302	78.65
	II	191.19	188.29	180.85	166.04
	III	235.43	220.02	219.96	206.45
	IV	337.57	332.58	330.42	306.92
II	I	85.102	83.978	83.580	82.809
	II	191.19	188.99	185.83	176.58
	III	235.43	230.01	229.39	209.41
	IV	337.57	335.47	332.40	325.37
III	I	85.102	83.571	83.571	82.894
	II	191.19	189.38	187.23	169.45
	III	235.43	225.16	220.41	203.41
	IV	337.57	330.37	326.45	301.69
IV	I	85.102	84.84	84.79	83.581
	II	191.19	190.23	188.27	174.10
	III	235.43	227.61	222.26	206.30
	IV	337.57	334.06	329.15	312.30