Research on the Vibration Insulation of High-Speed Train Bogies in Mid and High Frequency

Table 1

Values of stiffness and damping involved in this study.

	Stiffness (N/mm)			Damping (N⋅s/mm)
	Vertical	Horizontal	Longitudinal	Vertical	Horizontal	Longitudinal
Primary suspension
Rubber bearings	4000	400	4000	0.02	0.02	0.24
Primary dampers	- -	- -	- -	- -	33	- -
Damper rubber joints	70000	7500	70000	1.66	0.18	1.66
Rotary arm rubber joints	160000	18000	76000	9	0.43	3.79
Secondary suspension	1150	174	174	37	29.4	245