Browse > Article

Ride Sensitivity Analysis of a Train With Non-linear Suspension Elements  

전형호 (강원대학교 기계메카트로닉스공학과 대학원)
탁태오 (강원대학교 기계메카트로닉스공학과)
Publication Information
Journal of the Korean Society for Railway / v.5, no.1, 2002 , pp. 40-47 More about this Journal
Abstract
In this study, and analytical method for ride sensitivity analysis of a train with non-linear suspension elements are proposed. Non-linear characteristics of springs and dampers for primary and secondary suspensions of a train are parameterized using polynomial interpolation. Vertical dynamic model of a three-body train running on straight rail with the predetermined roughness expressed in terms of spectral density function is set up and its equations of motion for ride analysis are derived. Using the direct differentiation method, sensitivity equations of the vertical dynamic model with respect to design parameters associated with non-linearity of suspensions are obtained. Based on the sensitivity analysis, improvement of ride is achieved by varying appropriate suspension parameters.
Keywords
Ride Quality; Sensitivity Analysis; Vertical Dynamic Model; Direct Differentiation Method; Numerical Differentiation Method;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Guide for the Evaluation of Human Exposure to Whole Body Vibrations，Revision of Document ISO/TC 108 100E, and ISO/TC 108/W67 36, International Standards Organization(1969, 1970)
2 V. K. Garg, R. V. Dukkipati, Dynamics of Railway Vehicle Systems, Academic Press, 1984
3 J. K. Hedrick, D. N. Wormley, A. K. Kar, W. Murray and W. Baum, Performance Limits of Rail Passenger Vehicles: Evaluation and Optimization: U.S. DOT, Federal Railroad Administration, Report DOT /RSPA/DPB-50/79/32, Washington, D.C. 1979
4 J. K. Hedrick, D. N. Wormley, R. R. Kim, A. K. Kar, and W. Baum, Performance Limits of Rail Passenger Vehicle: Conventional, Radial, and Innovative Trucks; U.S. DOT, Federal Railroad Administration, Report DOT/RSPA/DPB-50/81/28, Washington, D.C. 1979
5 Office for Research and Experiments, Method for Assesing Riding Quality of Vehicle, ERRI Report C116/RP 8, Utrecht, Netherlands, April, 1977
6 G7 고속전철기술개발 동력학적 설계 및 해석기술개발 1차년도 보고서, KIST, 아주대학교, 1997
7 R. V. DUKKIPATI and J. R. AMYOT, Computer aided Simulation in Railway Dynamics, MARCEL DEKKER, 1988