Comparative Study on the Curving Performance of Chinese Railway Heavy Haul Freight Bogies
YANG Chunlei1, HUANG Yunhua2, LI Fu2
1. School of Advanced Materials & Mechatronic Engineering, Hubei Minzu University, Enshi 445000, China; 2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract：The low dynamic interaction performance of the 27 t axle load cross-braced bogie and the sub-frame radial bogie developed in China were compared in order to study their curving performance. Based on the theory of vehicle-track coupling dynamics and the actual structures of the two bogies，two vehicle-track coupling dynamic models were established separately. The optimum matching design method was adopted，and the curving performance of the two bogies were simulated. This method included parameters such as yaw of wheel-set，lateral force, and wear power to evaluate the curving performance，and the results were compared with the conventional three-piece bogie. The simulation results indicate that，on a curved track with a radius of less than 800 m，compared to the conventional three-piece bogie，both the bogies developed in China can lower the dynamic interaction. Furthermore，the sub-frame radial bogie has the advantage of reducing wheel/rail wear. However，with the increase in curve radius and excitation of track irregularities，the radial action of the sub-frame radial bogie weakens gradually. However，when the curve radius is greater than 1000 m，the wheel/rail wear of both bogies are equal，which means that using radial bogies to reduce wheel/rail wear has very little effect.
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YANG Chunlei, HUANG Yunhua, LI Fu. Comparative Study on the Curving Performance of Chinese Railway Heavy Haul Freight Bogies. Journal of SouthWest JiaoTong University, 2019, 54(3): 619-625.
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