Effect of constant contact side bearing design on dynamic performances of wagon with two conventional three-piece bogies

Dynamic performance - hunting stability and dynamic curving of a freight container wagon with two conventional three-piece bogies has been compared with the same wagon with improved bogies through the simulations. A typical wagon popularly used in Australia is modelled for simulations using the Gensys software. The improvement on the conventional three-piece bogie is only focused on side bearings, which are replaced with the long-travel constant contact side bearings. The simulation results show that the improved bogies significantly increase the wagon dynamic hunting stability performance.