Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Design of Wheel Profile to Reduce Wear of Railway Wheel

곡선부에서 차륜 마모 저감을 위한 차륜답면 형상 설계

  • Choi, Ha-Young (High-speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Lee, Dong-Hyong (High-speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Song, Chang-Yong (Department of Ocean Engineering, Mokpo National Univ.) ;
  • Lee, Jong-Soo (Department of Mechanical Engineering, Yonsei Univ.)
  • 최하영 (한국철도기술연구원 고속철도연구본부) ;
  • 이동형 (한국철도기술연구원 고속철도연구본부) ;
  • 송창용 (목포대학교 해양시스템공학과) ;
  • 이종수 (연세대학교 기계공학과)
  • Received : 2012.03.21
  • Accepted : 2012.04.27
  • Published : 2012.06.01
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Abstract

The wear problem of wheel flange occurs at sharp curves of rail. This paper proposes a procedure for optimum design of a wheel profile wherein flange wear is reduced by improving an interaction between wheel and rail. Application of optimization method to design problem mainly depends on characteristics of design space. This paper compared local optimization method with global optimization according to sensitivity value of objective function for design variables to find out which optimization method is appropriable to minimize wear of wheel flange. Wheel profile is created by a piecewise cubic Hermite interpolating polynomial and dynamic performances are analyzed by a railway dynamic analysis program, VAMPIRE. From the optimization results, it is verified that the global optimization method such as genetic algorithm is more suitable to wheel profile optimization than the local optimization of SQP (Sequential Quadratic Programming) in case of considering the lack of empirical knowledge for initial design value.

Keywords

References

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Cited by

  1. Wear Characteristics of Wheel/Rail Material under Dry and Wet Conditions vol.33, pp.7, 2016, https://doi.org/10.7736/KSPE.2016.33.7.541