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Fretting Wear Simulation of Press-Fitted Shaft with Finite Element Analysis and Influence Function Method

유한요소해석과 영향함수법을 이용한 압입축의 프레팅 마모해석

  • 이동형 (한국철도기술연구원) ;
  • 권석진 (한국청도기술연구원 철도시스템연구본부) ;
  • 최재붕 (성균관대학교 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 2008.01.01

Abstract

In this paper the fretting wear of press-fitted specimens subjected to a cyclic bending load was simulated using finite element analysis and numerical method. The amount of microslip and contact variable at press-fitted and bending load condition in a press-fitted shaft was analysed by applying finite element method. With the finite element analysis result, a numerical approach was applied to predict fretting wear based on modified Archard's equation and updating the change of contact pressure caused by local wear with influence function method. The predicted wear profiles of press-fitted specimens at the contact edge were compared with the experimental results obtained by rotating bending fatigue tests. It is shown that the depth of fretting wear by repeated slip between shaft and boss reaches the maximum value at the contact edge. The initial surface profile is continuously changed by the wear at the contact edge, and then the corresponding contact variables are redistributed. The work establishes a basis for numerical simulation of fretting wear on press fits.

Keywords

Press-Fitted Shaft;Fretting;Fretting Wear;Finite Element Analysis;Influence Function Method

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