Modeling and nonlinear hunting stability analysis of high-speed railway vehicle moving on curved tracks

Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads

“…Lee and Cheng 21,22 presented a model of the truck with 10 DOF and showed that the critical hunting speeds di®er signi¯cantly from those of a six-DOF system. Cheng et al 23 examined the hunting stability of a vehicle during curving, and presented the respective e®ects of the various parameters on the critical speed. Kim and Seok 24 performed bifurcation analysis on the hunting behavior of a nonlinear railway vehicle with dual bogies.…”

Dynamics and stability analysis of a freight wagon subjective to the railway track and wheelset operational conditions

“…They compared the results for nonlinear behavior of a rail vehicle on track and roller rig to understand the differences and restrictions where the vehicle becomes unstable. Additionally, further investigations on the effects of various parameters including system degrees of freedom, creep forces and suspension system properties on bogie hunting motion was performed by Cheng et al (Minorsky, 1947;Lee and Cheng, 2005;Cheng et al, 2009). They indicated that by decreasing the system degrees of freedom, the system would exhibit higher critical speeds.…”

Hunting stability and derailment analysis of a car model of a railway vehicle system

“…Polach [7,8] investigated the dynamic responses and critical speeds of railway vehicles with both linear and nonlinear creep models. Cheng et al [9] examined the hunting stability of railway vehicle systems and presented the effect of suspension parameters on critical hunting speeds using both linear and non-linear creep models. Sun et al [10] presented lateral hunting behaviours using a three-dimensional (3D) wagontrack system.…”

“…Moreover, the derailment analysis of vehicle models [14][15][16][17][18][19][20][21][22][23] is achieved via the linear creep model. In practice, the hunting stability and dynamic response of railway vehicles are highly sensitive to the way creep forces and moments are calculated [9]. However, the 20-DOF model constructed by Cheng et al [9] considers the lateral displacement and yaw angle of each wheelset, as well as the lateral and vertical displacements and roll and yaw angles of the bogie and car body, respectively.…”

“…In practice, the hunting stability and dynamic response of railway vehicles are highly sensitive to the way creep forces and moments are calculated [9]. However, the 20-DOF model constructed by Cheng et al [9] considers the lateral displacement and yaw angle of each wheelset, as well as the lateral and vertical displacements and roll and yaw angles of the bogie and car body, respectively. The DOF of roll angle of each wheelset is neglected in the 20-DOF model.…”