Dynamic Investigation of the Hunting Motion of a Railway Bogie in a Curved Track via Bifurcation Analysis

Table 1

Parameters and their numerical values of the two-axle railway bogie [1, 22, 23].

Parameters	Numerical value
Vehicle body, bogie frame, and wheelset masses	, ,
Nonlinear longitudinal damping coefficients (kNs/m)	, , ,
External load
Acceleration due to gravity
Wheel conicity
Flange clearance
Friction coefficient
Cant angle
Roll and yaw moments of inertia of the bogie frame	,
Roll and yaw moments of inertia of the wheelset (kgm^2)	,
Primary longitudinal, lateral, and vertical stiffness (kN/m)	, ,
Primary longitudinal, lateral, and vertical damping coefficients (kNs/m)	, ,
Vertical and lateral stiffness (N/m)	,
Wheel radius
Half of the track gauge
Lateral creep coefficient
Lateral/spin creep coefficient
Spin creep coefficient
Longitudinal creep coefficient
Half of the primary longitudinal and vertical spring arms
Half of the primary longitudinal and vertical damper arms
Half of the primary lateral spring and damper arms
Distance between the wheelset and the bogie frame mass center
Height of the vehicle body mass center above the wheelset mass center )
Height of the bogie mass center above the wheelset mass center