Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains

Table 3

Modal frequency and energy distribution of UCE by FDM.

Order		1	2	3	4	5	6
Modal frequency (Hz)		6.23	8.66	11.09	17.02	20.87	26.86
Energy distribution (%)	x	0.0	3.8	91.0	2.2	2.9	0.1
	y	97.9	0.1	0.3	0.4	0.1	0.1
	z	1.1	85.8	4.5	0.0	1.0	4.6
	rx	0.4	2.2	0.3	0.6	13.9	82.7
	ry	0.0	7.0	1.1	2.4	80.0	12.5
	rz	0.6	0.1	2.8	94.3	2.1	0.0