대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제37권9호
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  • Pages.1099-1107
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  • 2013
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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도시철도차량 차체의 경량화를 위한 소재 변경 및 구조체 최적화 연구

Study on Weight Reduction of Urban Transit Carbody Based on Material Changes and Structural Optimization

  • 조정길 (서울과학기술대학교 철도차량시스템공학과) ;
  • 구정서 (서울과학기술대학교 철도차량시스템공학과) ;
  • 정현승 (한국철도기술연구원 신교통연구본부)
  • Cho, Jeong Gil (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) ;
  • Jung, Hyun Seung (New Transportation Systems Research Center, Korea Railroad Research Institute)
  • 투고 : 2013.01.22
  • 심사 : 2013.04.30
  • 발행 : 2013.09.01
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초록

본 연구에서는 알루미늄 압출재로 구성된 한국형 표준전동차모델(K-EMU)의 차체를 대상으로 치수 최적설계와 구조체 소재 변경을 통한 경량화방안에 대해 연구하였다. 우선 K-EMU 차체의 하부구조, 측벽구조, 단부구조의 부재별 두께를 현재의 압출가능 두께를 적용하여 치수 최적화 기법으로 약 14.8% 경량화 하였다. 그리고 치수최적설계 된 K-EMU 차체에 유지보수성이 좋은 고장력강(SMA570)재질의 프레임타입 하부구조를 적용하여 초기 K-EMU 차체대비 약 3.8% 경량화 된 하이브리드 차체를 도출하였다. 마지막으로 샌드위치 복합재를 하부구조와 지붕구조에 적용하여 초기 K-EMU 차체대비 약 30% 경량화 된 초경량 하이브리드 차체를 도출하였다. 도출된 차체 모델들은 모두 전동차 구조체 하중시험법을 만족하였다.

This study proposes a weight reduction design for urban transit, specifically, a Korean EMU carbody made of aluminum extrusion profiles, according to size optimization and useful material changes. First, the thickness of the under-frame, side-panels, and end-panels were optimized by the size optimization process, and then, the weight of the Korean EMU carbody could be reduced to approximately 14.8%. Second, the under-frame of the optimized carbody was substituted with a frame-type structure made of SMA 570, and then, the weight of the hybrid-type carbody was 3.8% lighter than that of the initial K-EMU. Finally, the under-frame and the roof-panel were substituted with a composite material sandwich to obtain an ultralight hybrid-type carbody. The weight of the ultralight hybrid-type carbody was 30% lighter than that of the initial K-EMU. All the resulting carbody models satisfied the design regulations of the domestic Performance Test Standard for Electrical Multiple Unit.

키워드

참고문헌

  1. Kim, H. W., Kim, J. W., Jung, H. S. and Park, K. B., 2011, "A Study on Evaluating System Performance for Light-Weight Rolling Stock," The Korean Society for Railway, Vol. 14, No. 6, pp. 489-494. https://doi.org/10.7782/JKSR.2011.14.6.489
  2. Han, S. W. and Jung, H. S., 2010, "Weight Reducing of Aluminum Extrusion Profiles of a Railway-Car Body Based on Topology and Size Optimization," Trans. Korean Soc. Mech. Eng. A, Vol. 35, No. 2, pp. 213-221. https://doi.org/10.3795/KSME-A.2011.35.2.213
  3. Cho, J. G., Koo, J. S. and Jung, H. S., 2011, "A Study on Weight-reduction Design of a Hybrid Bodyshell Made by Substituting Underframe Material in a Box-type Carbody," The Korean Society of Automotive Engineers, Vol. 19, No. 5, pp. 100-112.
  4. Kwon, T. S., Lee, H. Y., Lee, K. S. and Choi, S. K., 1998, "Bodyshell Strength Analysis for Standard EMU," The Korean Society for Railway Fall Conference, pp. 455-463.
  5. "Hypermesh," 2011, Altair Engineering Inc.
  6. Korean Ministry of Construction and Transportation, 1998, "Performance Test Standard for Electrical Multiple Unit," Promulgation No. 22.
  7. Jasbir S. Arora, 2004, Introduction to Optimum Design, Academic Press
  8. "Optimization," 2011, Altair Engineering Inc.
  9. Choo, D. H., Kim, Y. M., Koo, B. C. and Koo, J. S., 2009, "A Study on Strcutual Strength Analysis and Load Test Evaluation of New Model EMU for Seoulmetro Line 3," The Korean Society for Railway Fall Conference, pp. 2034-2044.
  10. http://tran.fiber-x.com/
  11. Jang, H. J., Shin, K. B., Ko, H. Y. and Ko, T. H., 2010, "A Study on the Standardized Finite Element Models for Carbody Structures of Railway Vehicle Made of Sandwich Composites," The Korean Society for Railway, Vol. 13, No. 4, pp. 382-388.
  12. Tsai, S. W. and Wu, E. M., 1971, "General Theory of Strength for Anisotropic Materials," Journal of Composite Materials, Vol. 5, No. 1, pp. 58-80. https://doi.org/10.1177/002199837100500106