Insights into Underrail Rubber Pad’s Effect on Vehicle-Track-Viaduct System Dynamics

Table 2

Parameters of CRH380A high-speed train.

Parameters	Values
Rated load car body mass (kg)	42934
Bogie mass (kg)	3300
Wheelset mass (kg)	1780
Moment of inertia of car body nodding (kg·m^2)	1.712 × 106
Bogie nodding moment of inertia (kg·m^2)	1807
Vertical stiffness of primary suspension (N·m^−1)	1.176 × 106
Primary suspension damping (N·s/m)	1.0 × 104
Secondary suspension stiffness (N·m^−1)	2.4 × 105
Secondary suspension damping (N·s/m)	2.0 × 104
Car length (m)	25
Vehicle distance (m)	17.5
Fixed wheelbase (m)	2.5