Analysis of Vibration of Roadheader Rotary Table Based on Finite Element Method and Data from Underground Coalmine

Table 5

Comparison between the experiment and simulation.

Order	Frequency (Hz)		Damping ratio
	Simulation	Experiment	Simulation	Experiment
(1)	152.399	139.581	0.999	1.469
(2)	166.591	170.601	0.645	0.400
(3)	251.626	270.549	0.274	0.155
(4)	311.365	363.650	0.199	0.204
(5)	321.16	414.087	0.247	0.258
(6)	470.726	438.216	0.086	0.092