Evaluating stress intensity factors of a surface crack in lubricated rolling contacts

S. H. Ju, K. C. Cha

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

The three-dimensional finite element method and the least-squares method were used to find the stress intensity factors (SIFs) of a surface crack in a lubricated roller. A steel roller on a rigid plane was modeled, in which a semi-elliptical surface crack is inclined at an angle ψ to the vertical axis. A distance c is set between the crack base and the roller edge. The results indicate that the mode-I SIF reaches the maximum value when the angle θ is equal to 0° (on the roller surface), and the mode-II SIF reaches the absolute maximum value when the angle θ is near or equal to 90° (inside the roller), where θ is the angle of the semi-ellipse from 0° to 180°. The influence of mode-III SIFs in this model is minor since they are much smaller than the mode-I and mode-II SIFs. The SIFs increase greatly when the crack location approaches the uncrowned edge. At this time, a crowned profile can be used to significantly reduce the SIFs near the roller edge.

原文English
頁(從 - 到)1-15
頁數15
期刊International Journal of Fracture
96
發行號1
DOIs
出版狀態Published - 1999

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

指紋 深入研究「Evaluating stress intensity factors of a surface crack in lubricated rolling contacts」主題。共同形成了獨特的指紋。

引用此