Journal Article10.1243/09544097JRRT363
Derailment Risk Due to Coupler Jack-knifing Under Longitudinal Buff Force
D Chen
- 01 Sep 2010
- Vol. 224, Iss: 5, pp 483-490
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TL;DR: In this paper, the authors evaluated Association of American Railroads Manual of Standards and Recommended Practices (AAR MSRP) Chapter II requirements on coupler angles, transformed lateral force, and safety check condition of cars on a 175 m radius (10°) curve with 890 kN (200 kips) in-train pull force.
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Abstract: Numerous rail accidents occurred in recent years in Canada due to coupler jack-knifing under longitudinal in-train buff force Interaction between coupler jack-knifing and transformed lateral force under a buff force shows an unstable and positive feedback Mathematical analysis and case studies demonstrate the mechanical and track conditions, and operational misconducts as well, that led to such jack-knifing and derailments Defences against this risky lateral jack-knifing are evaluated Association of American Railroads Manual of Standards and Recommended Practices (AAR MSRP) Chapter II requirements on coupler angles, transformed lateral force, and safety check condition of cars on a 175 m radius (10°) curve with 890 kN (200 kips) in-train pull force are discussed
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Citations
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Experimental assessment of the dynamic performance of slave control locomotive couplers in 20,000-tonne heavy-haul trains:
Xin Ge,Liang Ling,Zaigang Chen,Jie Zhang,Kaiyun Wang,Kaiyun Wang,Wanming Zhai +6 more
- 14 Feb 2021
TL;DR: The test results indicate that the front and rear couplers of the slave locomotive group respectively suffer the largest draw and buffing forces, and the maximum yaw angle appears at the middle coupler between theslave locomotives.
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Identifying the Input Uncertainties to Quantify When Prioritizing Railway Assets for Risk-Reducing Interventions
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Analysis of coupler jackknifing and its effect on locomotives on a tangent track
Lirong Guo,Kaiyun Wang +1 more
- 01 May 2018
TL;DR: In this study, an effectively active measure is proposed to improve the stability of the coupler and to prevent possible derailments caused by coupler jackknifing during braking, and a numerical simulation model is developed to investigate the effect of couplers on the running safety of the locomotive.
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