Browse > Article

The Experimental Study about a Correlation between the Derailment Coefficient of the Railway Vehicle and the Track Alignment  

Ham, Young-Sam (Vehicle and Track Research Department, Korea Railroad Research Institute)
Lee, Dong-Hyung (Vehicle and Track Research Department, Korea Railroad Research Institute)
Kwon, Seok-Jin (Vehicle and Track Research Department, Korea Railroad Research Institute)
Seo, Jung-Won (Vehicle and Track Research Department, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.8, 2010 , pp. 7-12 More about this Journal
Abstract
When a vehicle is running, wheel is generating vertical and lateral force on the rail, in addition to load of vehicle, through a complicated set of motions. The derailment coefficient refers to the ratio of lateral force to vertical force(wheel load), and if the value exceeds a certain level, a wheel climbs or jumps over the rail. That's why the value is used as a criterion for running safety. Derailment coefficient of rolling stocks alters according to shape of rail track. I measured three-dimensional angular velocity and acceleration to use 3D Motion Tracker. Test result, derailment coefficient of rolling stocks and shape of rail track examined closely that have fixed relation. Specially, was proved that roll motion has the close coupling relation.
Keywords
Derailment Coefficient; Wheel Load; Lateral Force; Running Safety; Track Alignment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 International Union of Railways, "Testing and approval of railway vehicles from the point of view of their dynamic behaviour - Safety - Track fatigue - Running behaviour, 4th Edition," UIC CODE 518, 2009.
2 Ham, Y. S., Lee, D. H. and Oh, T. Y., "Wireless measuring system to estimate running safety of tilting vehicles," Proc. of Korean Society for Precision Engineering Spring Conference, pp. 809-810, 2007.
3 Ham, Y. S., Seo, J. W., Lee, D. H., Kwon, S. J., Kim, J. C. and Lee, C. W., "Measurement & analysis of derailment coefficient for korean tilting vehicle," Proc. of Korean Society for Railway Autumn Conference, pp. 1628-1633, 2008.
4 Railroad Safety Law, "Rule about safety level of rolling stocks," Ministry of Land, Transport and Maritime Affairs, Notification No. 35, 2008.
5 Hong, Y. K. and Ham, Y. S., "A Study on Derailment Possibility that can Analogize from Vibration and Displacement of Rolling Stocks," Proc. of Korean Society for Railway Spring Conference, pp. 84-89, 2007.
6 Ham, Y. S., Lee, D. H., Kwon, S. J., You, W. H. and Oh, T. Y., "Continuous Measurement of Interaction Forces between Wheel and Rail," International Journal of Precision Engineering and Manufacturing, Vol. 10, No. 1, pp. 35-39, 2009.   과학기술학회마을   DOI