Analysis on Vibration Characteristics of Air Film Damping with Open Boundaries

Table 6

Damping ratio at different thin skin thickness.

Thin skin thickness (mm)	Theoretical damping ratio	Experimental damping ratio	Error (%)
0.1	0.4	0.35	14.29
0.125	0.415	0.41	12.20
0.15	0.55	0.5	10.00
0.175	0.546	0.523	4.40
0.2	0.6	0.57	5.26
0.225	0.633	0.55	15.09
0.25	0.623	0.525	18.67
0.275	0.586	0.452	25.66
0.3	0.539	0.42	28.33