Tribology and Lubricants

  • 제22권6호
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  • Pages.320-328
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  • 2006
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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타원접촉 EHL 상태에서의 접촉피로수명 예측

Contact Fatigue Life Prediction under Elliptical Elastohydrodynamic Lubrication

  • Kim, Tae-Wan (Nanotribology Laboratory for Information Storage and MEMS/NEMS(NLIM), The Ohio State University) ;
  • Lee, Sang-Don (Graduate School, Pusan National University) ;
  • Koo, Young-Pil (Busan Techno-Park Technical Support Team) ;
  • Cho, Yang-Joo (School of Mechantcal Engineering, Pusan National University)
  • 발행 : 2006.12.31
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초록

In this study, the simulation of rolling contact fatigue based on stress analysis is conducted under Elastohydrodynamic Lubrication state. To predict a crack initiation life accurately, it is necessary to calculate contact stress and subsurface stresses accurately. Contact stresses are obtained by contact analysis of a semi-infinile solid based on the use of influence functions and the subsurface stress field is obtained using rectangular patch solutions. And a numerical algorithm using Newton-Rapson method was constructed to calculate the Elastohydrodynamic lubrication pressure. Based on these stress values, several multiaxial high-cycle fatigue criteria are used and the critical loads corresponding to fatigue limits are calculated.

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참고문헌

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