Research Article

Formulation of a Linearized Model for Vehicle-Track Interactions

Table 1

Main parameters of railway vehicles used in the simulation.

NotationParameterValues

McCar body mass (kg)34500
MtBogie mass (kg)3500
MwWheelset mass (kg)2200
IcxMass moment of inertia of car body about the X axis (kg m2)124304
IcyMass moment of inertia of car body about the Y axis (kg m2)1560400
IczMass moment of inertia of car body about the Z axis (kg m2)1521000
ItxMass moment of inertia of bogie about the X axis (kg m2)2522
ItyMass moment of inertia of bogie about the Y axis (kg m2)1722
ItzMass moment of inertia of bogie about the Z axis (kg m2)3100
IwxMass moment of inertia of wheelset about the X axis (kg m2)730
IwyMass moment of inertia of wheelset about the Y axis (kg m2)84
IwzMass moment of inertia of wheelset about the Z axis (kg m2)990
KpxStiffness coefficient of primary suspension along the X axis (MN/m)11.68
KpyStiffness coefficient of primary suspension along the Y axis (MN/m)7.40
KpzStiffness coefficient of primary suspension along the Z axis (MN/m)1.173
KsxStiffness coefficient of secondary suspension along the X axis (MN/m)0.1790
KsyStiffness coefficient of secondary suspension along the Y axis (MN/m)0.1790
KszStiffness coefficient of secondary suspension along the Z axis (MN/m)0.61
CpzDamping coefficient of primary suspension along the Z axis (kN s/m)19.60
CsyDamping coefficient of secondary suspension along the Y axis (kN s/m)54.80
CszDamping coefficient of secondary suspension along the Z axis (kN s/m)9.80
LcSemilongitudinal distance between bogies (m)8.75
LtSemilongitudinal distance between wheelsets in bogie (m)1.25
R0Wheel radius (m)0.43