Shock and Vibration / 2019 / Article / Tab 2

Research Article

Stochastic Analysis of Nonlinear Vehicle-Track Coupled Dynamic System and Its Application in Vehicle Operation Safety Evaluation

Table 2

Vehicle dynamics parameters.

ItemNotationUnitValue

Car bodyMassmckg33.2 × 103
Mass moment of inertia about x-axisIxckg·m21.07568 × 105
Mass moment of inertia about y-axisIycKg·m21.6268 × 106
Mass moment of inertia about z-axisIzckg·m21.4027 × 106
BogieMass of bogiemtkg2.6 × 103
Mass moment of inertia about x-axisIxtkg·m22106
Mass moment of inertia about y-axisIytkg·m21424
Mass moment of inertia about z-axisIztkg·m22600
WheelsetMass of wheelsetkg1.97 × 103
Mass moment of inertia about x-axiskg·m2623
Mass moment of inertia about y-axiskg·m278
Mass moment of inertia about z-axiskg·m2623
Primary suspension systemLongitudinal spring stiffnesskpxN/m9.8 × 106
Lateral spring stiffnesskpyN/m9.8 × 106
Vertical spring stiffnesskpzN/m1.176 × 106
Longitudinal damping coefficientcpxN·s/m0
Lateral damping coefficientcpyN·s/m0
Vertical damping coefficientcpzN·s/m0.196 × 103
Second suspension systemLongitudinal spring stiffnessksxN/m1.784 × 105
Lateral spring stiffnessksyN/m1.931 × 105
Vertical spring stiffnesskszN/m1.931 × 105
Longitudinal damping coefficientcsxN·s/m0
Lateral damping coefficientcsyN·s/m5.88 × 104
Vertical damping coefficientcszN·s/m9.8 × 104
Half the transverse distance between vertical primary suspension systemsdwkm1.0
Half the transverse distance between vertical primary suspension system absorberdwcm1.0
Half the transverse distance between vertical second suspension systemsdskm1.25
Half the transverse distance between vertical second suspension systems absorberdscm1.25
Vertical distance between center of gravity of car body and lateral secondary suspension systemHcbm0.644
Vertical distance between lateral secondary suspension system and center of gravity of bogieHbtm0.29
Vertical distance between center of gravity of bogie and lateral primary suspension systemHtwm0.08
Half the longitudinal distance between center of rear bogie and center of front bogieLcm8.75
Half the bogie axle baseLtm1.25

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