한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제11권4호
  • /
  • Pages.1192-1196
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  • 2010
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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승용차 배기계 벨로우즈의 구조해석에 관한 연구

A Study on Structural Analysis for the Bellows of Automotive Exhaust System

  • 김진봉 (한서대학교 항공기계학과)
  • Kim, Jin-Bong (Aeronautical & Mechanical Eng., Hanseo University)
  • 투고 : 2009.10.06
  • 심사 : 2010.04.09
  • 발행 : 2010.04.30
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초록

자동차 배기계는 제한된 설치 공간으로 인하여 내구성과 연계된 형상을 최적화하여야 한다. 본 연구에서는 자동차 배기계를 구성하고 있는 Flexible Tube(Bellows)의 형상에 따른 응력 변화를 해석하였다. 아울러 Bellows의 변위량이 크게 발생하는 것을 고려하여 기하학적 비선형 해석을 실시하였으며 Bellows의 변형량은 끝단에서 6mm의 변위가 발생하도록 하였으며 얻어진 결과는 다음과 같다. (1) Bellows의 두께가 증가하거나 Bellows Tube의 반경이 증가하면 Von-Mises 응력은 비례적으로 증가한다. (2) Bellows의 주름의 반경이 증가함에 따라 주 응력이 감소하다가 증가함으로 Bellows 설계 시 최소 응력 산출을 위한 주름 반경의 선정이 요구된다.

As the space for installation of automotive exhaust system is limited, the space should be optimized with relation to the endurance and shape of the system. Geometric nonlinear analysis was used and deflection of bellows was assumed 6mm. Obtained results are as follows; (1) The Von-Mises stress of bellows is increased with increase of thickness or radius of bellows linearly. (2) As the principal stress varies according to the radius of convolution, it is necessary to decide the optimal radius of convolution.

키워드

참고문헌

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