Study on Influence of Diversified Parameters of Vehicle and Track on Wheel Hollow Wear

Table 2

Design variables of vehicle and track parameters.

Symbol	Parameter property name	Unit	Base value	Value range
X1	Longitudinal stiffness of tumbler journal box node	MN·m^−1	15	6~24
X2	Lateral stiffness of tumbler journal box node	MN·m^−1	8	3.2~12.8
X3	Longitudinal stiffness of primary suspension	MN·m^−1	0.9	0.36~1.44
X4	Lateral stiffness of primary suspension	MN·m^−1	0.9	0.36~1.44
X5	Vertical stiffness of primary suspension	MN·m^−1	1.5	0.6~2.4
X6	Longitudinal stiffness of air-spring suspension	MN·m^−1	0.15	0.12~0.3
X7	Lateral stiffness of air-spring suspension	MN·m^−1	0.15	0.12~0.3
X8	Vertical stiffness of air-spring suspension	MN·m^−1	0.18	0.09~0.27
X9	Vertical damping of primary suspension	kN·s·m^−1	50	20~80
X10	Damping of anti-hunting motion dampers	MN·m·s^−1	0.75	0.3~1.2
X11	Lateral stiffness of track	MN·m^−1	20	8~32
X12	Vertical stiffness of track	MN·m^−1	75	30~120
X13	Lateral damping of track	MN·m^−1	49	19.6~78.4
X14	Vertical damping of track	MN·m^−1	94	37.6~150.4