Analysis of the Gyroscopic Stability of the Wheelset

Table 1

Parameters of wheelset.

Parameters	Value	Commet
𝑚	1500 kg	Wheelset mass
𝐽	825.7 kg·m^2	Yaw inertia
𝑓11	6.728 MN	Longitudinal creep coefficient
𝑓22	6.728 MN	Lateral creep coefficient
𝑓23	1500 N·m	Spin creep coefficient
𝐼𝑦	70 kg·m^2	Pitch rotor inertia
𝜆	0.28	Equivalent conicity
𝑟0	0.533 m	Wheel radius
𝑏	0.7175 m	Half of rolling cycle gauge
𝑙0	1 m	Half of primary suspension gauge
𝑘𝑥	5 MN/m	Primary longitudinal stiffness
𝑘𝑦	5 MN/m	Primary lateral stiffness
𝑊	m*g	Axle load
𝑉	—	Operation speed