Rail Corrugation Detection of High-Speed Railway Using Wheel Dynamic Responses

Table 1

Parameters for Chinese high-speed train CRH3 [13].

Parameter	Value	Unit
Mass of car body	40000	kg
Mass of bogie	3200	kg
Mass of wheelset	2400	kg
Pitch inertia of car body	547000	kg·m^2
Pitch inertia of bogie	6800	kg·m^2
Stiffness of primary suspension system	2.08 × 10^6	N/m
Stiffness of secondary suspension system	8 × 10^5	N/m
Damping of primary suspension system	1 × 10^5	N·s/m
Damping of secondary suspension system	1.2 × 10^5	N·s/m
Semilongitudinal distance between bogies	8.6875	m
Semilongitudinal distance between wheelsets in bogie	1.25	m
Radius of wheel	0.46	m