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

Table 4

Modal frequency and energy distribution of UCE by IDM.

Order		1	2	3	4	5	6
Modal frequency (Hz)		6.90	9.07	10.47	17.08	24.38	31.88
Energy distribution (%)	x	0.3	87.7	1.2	6.2	0.6	0.0
	y	98.5	0.2	1.0	0.1	0.1	0.1
	z	0.6	5.3	92.2	0.1	1.2	4.7
	rx	0.2	0.1	2.3	0.1	13.8	83.4
	ry	0.0	1.0	2.7	0.8	83.6	11.9
	rz	0.3	5.7	0.6	92.6	0.7	0.0