Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Finite Element Simulation of Surface Pitting due to Contact Fatigue

접촉피로에 의한 표면피팅의 유한요소 시뮬레이션

  • Rhee, Hwan-Woo (School of Mechanical Engineering & Automation, Kyungnam Univ.) ;
  • Kim, Sung-Hun (Department of Mechanical Engineering, Graduate School, Kyungnam Univ.)
  • 이환우 (경남대학교 기계자동화공학부) ;
  • 김성훈 (경남대학교 대학원 기계공학과)
  • Published : 2010.03.01
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Abstract

A simple computational model for modeling of subsurface crack growth under cyclic contact loading is presented. In this model, it is assumed that the initial fatigue crack will initiate in the region of the maximum equivalent stress at certain depth under the contacting surface. The position and magnitude of the maximum equivalent stress are determined by using the equivalent contact model, which is based on the Hertzian contact conditions with frictional forces. The virtual crack extension method is used for simulation of the fatigue crack growth from the initial crack up to the formation of the surface pit due to contact fatigue. The relationships between the stress intensity factor and crack length are then determined for various combinations of equivalent contact radii and loadings.

Keywords

References

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