Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area

Table 4

Test arrangement of the parameter d.

Test conditions	Excitation frequency (Hz)	D
1-1	30	0.08
1-2		0.14
1-3		0.19
1-4		0.25
1-5	60	0.16
1-6		0.27
1-7		0.38
1-8		0.49
1-9	120	0.33
1-10		0.55
1-11		0.76
1-12		0.98