Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Finite Element-Based Fatigue Assessment of Engine Connecting-Rod Bolts

엔진 커넥팅 로드 볼트의 유한요소 피로 평가

  • 조성산 (홍익대학교 기계시스템디자인공학과) ;
  • 장훈 (현대자동차) ;
  • 이경우 (현대자동차)
  • Published : 2008.07.01
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Abstract

Fatigue fracture of engine connecting-rod bolts is encountered frequently during the developement of high-speed engines. Only the engine dyno test is a currently reliable fatigue durability assessment method. It is because the available rig tests cannot mimic the engine running condition completely, and because the finite element analysis cannot provide realistic stresses near the bolt thread that is modeled as a cylinder. This paper introduces a methodology to assess the fatigue durability of the connecting-rod bolts using the finite element analysis. The methods to contruct the bolt model, to extract the critical bolt stresses for the fatigue analysis, and to obtain the bolt fatigue endurance limit experimentally are discussed. Reliability of the method is verified indirectly.

Keywords

References

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