Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Estimation on a Contact Size Effect in Fretting Fatigue Between Cylindrical Pad and Flat Specimen

실린더형 패드와 평판 시험편간 프레팅 피로의 접촉폭 크기효과에 관한 평가

  • 김진광 (경남대학교 기계자동화 공학부) ;
  • 조상봉 (경남대학교 기계자동화 공학부)
  • Published : 2008.06.01
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Abstract

In general, fretting is a contact damage process due to micro-slip associated with small amplitude oscillatory movement between two surfaces in contact. Previous studies in fretting fatigue have observed a contact size effect related to contact width. The volume-averaging method of theoretically predicted contact stress fields was required to emulate experimental trends and to predict the observed contact size effects. This contact size effect is captured by the mean values of stresses and strains at the element integration points of FE model and two critical plane models (SWT, FS) in the present paper. It is shown that crack nucleation and fretting fatigue life can be predicted by the FE-based critical plane models.

Keywords

References

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