Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Shape Optimum Design of Ship's Bellows Using Statistical Method

통계적 방법을 이용한 선박용 벨로우즈의 형상 최적 설계

  • Kim, Hyun-Su (Department of Mechanical Engineering, DongA University) ;
  • Kim, Hyo-Gyeum (Graduate School of Mechanical Engineering, DongA University) ;
  • Lee, Jae-Sub (Graduate School of Mechanical Engineering, DongA University) ;
  • Kim, Hyoung-Jun (Graduate School of Mechanical Engineering, DongA University)
  • 김현수 (동아대학교 기계공학부) ;
  • 김효겸 (동아대학교 기계공학과 대학원) ;
  • 이재섭 (동아대학교 기계공학과 대학원) ;
  • 김형준 (동아대학교 기계공학과 대학원)
  • Published : 2007.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Bellows are mechanical components which prevent the damage of system by absorption of the vibration and the displacement of axle and radial direction. Thermal piping system is expanded by the fluid of the high temperature from the heat engine inside. At this time, bellows prevent the damage of the piping due to the thermal expansion. Recently, design of bellows is required to fit some other operational environments which are not suggested in the E.J.M.A code book. And it is difficult to produce and to maintain bellows of high temperature and high pressure bemuse of its complicated shape and this causes the manufacturing cost to rise. The objective of this study is to determine optimum shape of bellows which can endure in the high temperature and high pressure. The maximum stress has an effect on the fatigue life of bellows, therefore it needs to be minimized. This study attempts to find a shape which minimizes the stress occurring in the bellows by the design of experiment. The model used in this study is not presented in the E.J.M.A code book, therefore, from the result of design of experiment we find the factors which give effects on the characteristic value and we presents the recession model using the RSM, which can predict the characteristic values depending on the change of factor values.

Keywords

References

  1. 고병갑, 박경진 (1997). '상하향식 설계법을 이용한 자동차 배기시스템의 설계', 한국자동차공학회논문집, 제5권, 제6호, pp 13-27
  2. 나완용, 김미수, 오용석 (2004), '자동차용 벨로우즈의 구조 해석에 관한 연구', 한국공작기계학회논문집, 제13권, 제6호, pp 102-106
  3. 박성현 (1995). 현대실험계획법, 2nd ed, 민영사, 서울
  4. 염기선, 허재선, 곽병만 (2001). '반응표면법을 이용한 구조물 최적설계 프로그램의 개발', 대한기계학회 춘계학술대회 논문집, pp 580-585
  5. 이종선 (2007). MINITAB R14 for DOE, 이레테크, 서울
  6. Clark, R.A. (1964). 'Asymptotic solutions of Elastic Shell Problem, Asymptotic Solution of Differential Equations and Their Applications', Jhon Willey and Sons, Inc
  7. Expansion Joint Manufactures Association (1998). Standard of the Expansion Joint Manufacturers Association, Inc
  8. Koh, B.K. and Park, G.J. (1997). 'Development of Finite Element Analysis Program and Simplified Formulas of Bellows and Shape Optimization', J. of the KSME, Vol 21, No 8, .pp 1195-1208
  9. Lupa, A. and Weil, N.A. (1962). 'Analysis of U Shaped Expansion Joint', J. Appl. Mech., Vol 29, No 1, pp 115-123 https://doi.org/10.1115/1.3636442
  10. Lee, W.I., Oh, J.E. and Kim, T.W. (1988). 'A Study on the Dynamic Characteristics of Bellows', J. of the KSME, Vol 12, No 6, pp 1273-1281
  11. Zhu Y.Z., Wang, H.F. and Sang, Z.F. (2006). 'The Effect of Environmental Medium On Fatigue Life For U-Shaped Bellows Expansion Joints', International Journal of Fatigue, Vol 28, Issue 1, pp 28-32 https://doi.org/10.1016/j.ijfatigue.2005.04.004
  12. Hasan S., George, G. and Khatak, H.S. (2001). 'Failure Analysis of an AM 350 Steel Bellows', Engineering Failure Analysis, Vol 8, Issue 6, pp 571-576 https://doi.org/10.1016/S1350-6307(00)00026-1
  13. Becht C. (2000). 'Fatigue of Bellows, A New Design Approach', International Journal of Pressure Vessels and Piping, Vol 77, Issue 13, pp 843-850 https://doi.org/10.1016/S0308-0161(00)00078-8
  14. Radhakrishna, M. and Kameswara., Rao, C. (2004). 'Axial Vibrations Of U-Shaped Bellows With Elastically Restrained End Conditions', Thin-Walled Structures 42, pp 415-426 https://doi.org/10.1016/S0263-8231(03)00130-7