Investigation of Concrete Base-Roadbed Surface Contact Variation-Induced Vibration Characteristics of Vehicle-Slab Track-Subgrade System considering Fluid-Solid Interaction

Table 1

Basic parameters of vehicle simulated.

Parameters	Value
Car body mass	40,000 kg
Bogie mass	3200 kg
Axle mass	2400 kg
Secondary suspension stiffness	0.8 MN/m
Secondary suspension damping	120 kN·s/m
Primary suspension stiffness	2.08 MN/m
Primary suspension damping	100 kN·s/m
Fixed wheelbase	2.5 m
Distance between bogie pivot centers	17.375 m
Stiffness of wheel-rail contact	1.325 × 10^3 MN/m
Axle load	140 kN