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Multiobjective Optimization Model for Profile Design of Hump Distributing Zone

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  • Hongliang Zhang
  • Jing Yang
  • Taoyuan Yang

Abstract

Railway freight trains consist of many cars heading to different destinations. Hump is the special equipment that distributes cars with different destinations to different tracks in a marshalling station. In recent years, with the development of Chinese freight car technology, the axle load has risen from 21 ton to 23 ton and will rise to 27 ton in the future. Many rolling problems appear in the hump distributing zone with the application of 23-ton axle load cars, which will be exacerbated by 27-ton axle load cars. This paper proposes a multiobjective optimization model based on the angle of the hump profile design with minimizing weighted accumulating rolling time (WART) and hump height as optimization goals and uses the improved genetic algorithm NSGA-II to determine a solution. In case study, Pareto solution set is obtained, and the contrast analysis with traditional method is made.

Suggested Citation

  • Hongliang Zhang & Jing Yang & Taoyuan Yang, 2017. "Multiobjective Optimization Model for Profile Design of Hump Distributing Zone," Mathematical Problems in Engineering, Hindawi, vol. 2017, pages 1-11, December.
    • Handle: RePEc:hin:jnlmpe:9318025
    DOI: 10.1155/2017/9318025
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