Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on Structure Analysis and Fatigue Life of the Common Rail Pipe

커먼레일 파이프의 구조해석 및 피로수명에 관한 연구

  • 송명준 (부산대학교 창의공학시스템학과) ;
  • 정성윤 (부산대학교 기계기술연구원) ;
  • 황범철 (부산대학교 기계기술연구원) ;
  • 김철 (부산대학교 기계기술연구원)
  • Received : 2009.11.16
  • Accepted : 2009.12.16
  • Published : 2010.04.01
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Abstract

The next generation of diesel engine can operate at high injection pressure up to 1,800bar. The common rail pipe must have higher internal strength because it is directly influenced by the high-pressure fuel. Folding defects in the Common rail pipe can not ensure the structural safety. Therefore, Preform design and fatigue-life analysis are very important for preventing the head of the common rail pipe from folding in the heading process and for predicting fatigue life according to the amount of folding. In this study, a closed form equation to predict fatigue life was suggested by Goodman theory and pressure vessels theory in ASME Code in order to develop an optimization technique of the heading process and verified its reliability through fatigue-structural coupled field analysis. The results calculated by the theory were in good agreement with those obtained by the finite element analysis.

Keywords

References

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  1. Development of an Urban Folding Bike for Public Transportation vol.22, pp.1, 2013, https://doi.org/10.5228/KSTP.2013.22.1.42
  2. Evaluation of Fatigue Life and Structural Analysis for Dish-Type and Spoke-Type Automobile Wheels vol.35, pp.10, 2011, https://doi.org/10.3795/KSME-A.2011.35.10.1315