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L. Wei, J. Zeng, R. Luo, "Research on the Hunting Instability criteria for High Speed Vehicles", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 21, 2014. doi:10.4203/ccp.104.21

Keywords: instability criteria, safety assessment, worn profile, stability test.

Summary

This paper focuses on the research of hunting instability criteria for two bifurcation types of vehicles. Firstly, the influence of track excitations on bifurcation graph is considered and a method of applying track excitation added with lateral impulse is proposed. Then, According to various criteria including the amplitude of limit cycles, RMS value of bogie frame acceleration and RMS value of the sum of guiding force, the hunting instability assessment is compared. The safety assessment of two vehicles after limit cycle instability is conducted. Thus, the safety domain of two vehicles can be determined respectively. Besides, the hunting instability and running safety assessment for worn wheel profile vehicles are also studied. Finally, the stability tests on full scale roller rig are conducted to compare different criteria and validate the simulation result.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 21 Research on the Hunting Instability criteria for High Speed Vehicles L. Wei, J. Zeng and R. Luo Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu, China doi:10.4203/ccp.104.21 purchase the full-text of this paper Full Bibliographic Reference for this paper L. Wei, J. Zeng, R. Luo, "Research on the Hunting Instability criteria for High Speed Vehicles", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 21, 2014. doi:10.4203/ccp.104.21 Keywords: instability criteria, safety assessment, worn profile, stability test. Summary This paper focuses on the research of hunting instability criteria for two bifurcation types of vehicles. Firstly, the influence of track excitations on bifurcation graph is considered and a method of applying track excitation added with lateral impulse is proposed. Then, According to various criteria including the amplitude of limit cycles, RMS value of bogie frame acceleration and RMS value of the sum of guiding force, the hunting instability assessment is compared. The safety assessment of two vehicles after limit cycle instability is conducted. Thus, the safety domain of two vehicles can be determined respectively. Besides, the hunting instability and running safety assessment for worn wheel profile vehicles are also studied. Finally, the stability tests on full scale roller rig are conducted to compare different criteria and validate the simulation result. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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