Proceedings of the Korean Society of Marine Engineers Conference (한국마린엔지니어링학회:학술대회논문집)

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Structural Behavior of the Cylinder Cover Stud of Marine Diesel Engine

박용엔진 실린더 커버 스터드의 구조거동 분석

  • 김병주 (현대중공업 선박해양연구소 구조연구실) ;
  • 이재옥 (현대중공업 선박해양연구소 구조연구실) ;
  • 박진수 (현대중공업 선박해양연구소 구조연구실) ;
  • 김세락 (현대중공업 엔진기계사업본부 대형엔진설계부)
  • Published : 2006.06.22
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Abstract

The cylinder cover stud of low-speed marine diesel engine is more than just a stud. It is a large structural element occasionally weighing over 200 kg used for assembling the combustion chamber components. Therefore, to understand the structural behavior of the stud and design it safely is quite important considering a catastrophic failure which can be arisen from an inadequate use of it. In this paper, the analysis results of the structural behavior of the stud is introduced. Strain measurement results compared with FE analysis results are summarized. The results showed that 1) the stud stress increased with engine operating load, 2) the maximum stress amplitude was about 10 MPa which is far smaller than the stud's fatigue strength of 61 MPa, 3) the stress ratio is higher than 0.9 and the stud's load factor is about 20 %, and 4) about 7 % of initial pressure tightening load was reduced while changing to a nut tightened condition.

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