Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on the Fatigue Crack Initiation Life Under Spherical Contact

구 접촉하에서의 피로균열 시작수명에 관한 연구

  • Jo, Yong-Ju (Dept.of Mechanical Engineering, Busan National University) ;
  • Kim, Tae-Wan (Dept.of Precision Mechanical Engineering, Graduate School of Busan National University) ;
  • Lee, Mun-Ju
  • Published : 2001.08.01
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Abstract

In case of contact fatigue, the accurate calculation of surface tractions and subsurface stress is essential to the predication of crack initiation life. Surface tractions influencing shear stress amplitude have been obtained by contact analysis based on influence function. Subsurface stress has been obtained by using rectangular patch solutions. In this study, to simulate asperity contact under sliding condition, the tip of asperity was simulated by sphere and to calculate crack initiation life in the substrate, dislocation pileup theory was used.

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References

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