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http://dx.doi.org/10.3795/KSME-A.2013.37.10.1207

Study on Mechanical Parameters of a Wheelset Influencing Derailment of Rolling Stock  

Oh, Hyun Sun (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology)
Koo, Jeong Seo (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.10, 2013 , pp. 1207-1218 More about this Journal
Abstract
It is difficult to predict derailment with the existing derailment coefficient like Nadal's formula which is based on the contact forces between one wheel and rail. A new derailment coefficient model developed on a wheelset is able to make a better estimate about the climb derailment, slip derailment, roll over derailment, and mixed derailment types of these. Moreover, not only the mechanical factors considered in the existing derailment coefficients but also other various factors affecting derailment such as wheel unloading and loading, diameter of wheel, and locations of axle-box bearings can be covered with this new derailment coefficient model. That is, the derailment patterns which couldn't be solved with the existing formulas such as Nadal's and Weinstock's models can be analyzed with this wheelset derailment coefficient model because of considering various factors causing derailment. Finally, the validity of the new derailment coefficient model is verified using dynamic model simulations.
Keywords
Derailment Coefficient; Wheelset; Wheel-Unloading; Rolling Stock; Rail; Dynamic Model;
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Times Cited By KSCI : 1  (Citation Analysis)
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