Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Lightweight Design of Car Bodies for Double Deck High-Speed Trains

2층 고속열차 차체 구조물의 경량화 설계

  • Kang, SeungGu (Graduate School of Mechanical Engineering, Hanbat National Univ.) ;
  • Shin, KwangBok (Department of Mechanical Engineering, Hanbat National Univ.) ;
  • Ko, TaeHwan (Korea Railroad Research Institute) ;
  • You, WonHee (Korea Railroad Research Institute)
  • Received : 2015.02.14
  • Accepted : 2015.04.14
  • Published : 2015.04.15
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Abstract

This paper describes a weight-reduction design method for the car bodies of a double deck high-speed train (service speed of 300 km/h). The method uses lightweight materials and a topology optimization technique. In this study, aluminum extrusions and sandwich composites were selected as the best materials to reduce the weight of the car body. The topology optimization technique was used to determine which car body parts could be made of the sandwich composites to achieve additional weight savings. The results of the topology optimization analysis showed that sandwich composites could be used for secondary car body members such as the roof and the second underframe. Also, it was found that a car body composed of aluminum extruded parts and sandwich composites could weigh up to 14% less than a car body made of only aluminum extrusions.

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References

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