Research Article

Dynamic Response of a Vehicle-Bridge Expansion Joint Coupled System

Table 1

Parameters of the 2-axle heavy vehicle model.

ParameterValueParameterValue

Mass of vehicle body, mC (kg)16000Spring stiffness of front axle tire, kT1 (kN/m)1190
Pitching moment of inertia of truck body, JCx (kg·m2)78904Spring stiffness of rear axle tire, kT2 (kN/m)2380
Rolling moment of inertia of truck body, JCz (kg·m2)4560Damping coefficient of front axle tire, cT1 (kN·s/m)3.5
Mass of front axle suspension, mT1 (kg)200Damping coefficient of rear axle tire, cT2 (kN·s/m)7
Mass of rear axle suspension, mT2 (kg)400Distance between front axle and gravity center, l1 (m)3.92
Spring stiffness of front axle suspension, kS1 (kN/m)210.67Distance between front rear and gravity center, l2 (m)1.68
Spring stiffness of rear axle suspension, kS2 (kN/m)942.64Wheel center distance of front axle, 2b1 (m)1.88
Damping coefficient of front axle suspension, cS1 (kN·s/m)14.63Wheel center distance of rear axle, 2b2 (m)1.86
Damping coefficient of rear axle suspension, cS2 (kN·s/m)10