Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)
- 2000.11a
- /
- Pages.72-79
- /
- 2000
Study on the Fatigue Crack Initiation Life under 3-Dimensional Rough Contact
3차원 거친 접촉하에서의 피로균열 시작수명에 관한 연구
Abstract
In case of rough contact fatigue, the accurate calculation of surface tractions is essential to the prediction of crack initiation life. Accurate Surface tractions influencing shear stress amplitude can be obtained by contact analysis based on tile morphology of contact surfaces. In this study, to simulate rough contact under sliding condition, gaussian rough surface generated numerically in the previous study was used and to calculate crack initiation life in the substrate, dislocation pileup theory was used.
Keywords
- Fatigue Wear;
- Crack Initiation life;
- Contact Fatigue;
- Dislocation Dipole Model;
- 3-D Subsurface Stress;
- 3-D Gaussian Rough Surface