한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제19권2호
  • /
  • Pages.117-124
  • /
  • 2011
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

자동차 엔진 밸브 스프링에 사용되는 비원형 스프링 선의 단면 형상 최적화

Shape Optimization of the Cross Section for a Non-circular Spring Wire of Valve Springs for an Automotive Engine

  • 김도중 (울산대학교 기계공학부) ;
  • 김영경 (울산대학교 대학원 기계공학부)
  • Kim, Do-Joong (Department of Mechanical Engineering, University of Ulsan) ;
  • Kim, Young-Kyung (Graduate School of Mechanical Engineering, University of Ulsan)
  • 투고 : 2010.06.14
  • 심사 : 2010.08.24
  • 발행 : 2011.03.01
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초록

Valve springs with non-circular cross-section are widely used in automotive engines. Because of the reduced height, the oval cross-section provides some merits in its install height and stress distribution. This paper introduces a new method to generate optimal shape of the non-circular cross-section. For given width and height, arbitrary shape of the cross-section are described using the Hermite spline curves. Cross-section area and maximum stress level are chosen as performance indices, and nonlinear optimization problems are formulated with inequality constraints. Compared to a production spring wire, cross-section area can be reduced about 2.4 [%] without increasing maximum stress level. In addition, the other approach gives an optimum cross-section which reduces maximum stress level of 2.0 [%] without increasing cross-section area.

키워드

참고문헌

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