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PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
A Study on Twisted Test Methods for High Speed Vehicles
B. Zheng, J. Zeng, L. Wei and Q.S. Wang
Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu, China
B. Zheng, J. Zeng, L. Wei, Q.S. Wang, "A Study on Twisted Test Methods for High Speed Vehicles", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 217, 2016. doi:10.4203/ccp.110.217
Keywords: high-speed vehicles, twisted test, wheel unloading rate, twisted test rig.
Safety is the eternal theme of railway transportation, the rapid development of high-speed and heavy-load railways brings new challenges for the running safety of trains. On the one hand, the derailment of high-speed or heavy-load train will cause more serious damage, especially, if a high-speed train is derailed, a catastrophe may occur. And on the other hand, the running principles, performance, and dynamic environment of high-speed trains are essentially different with those of ordinary trains. The safety assessment methods of the vehicle derailment based on the static test, given by the standards GM/RT 2141-2000 and EN 14363-2000, have been widely used for the safety evaluation of new products. This paper firstly analyzes the requirements and definitions of the railway vehicle derailment coefficient and the wheel unloading rate of the standards GB 5599-1985, GM/RT 2141-2000 and EN 14363-2000. Then, a mathematical model of vehicle system is established. Three test methods described in the GM/RT 2141-2000 and EN 14363-2000 are analysed using dynamic simulation. The simulation results and experimental data of a twisted test rig are compared. Finally, the test method and evaluation index of a twisted test that will be more suitable and more convenient for high-speed trains are summarized.
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