Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)
- 2001.06a
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- Pages.374-381
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- 2001
The Elastic-Plastic Contact Analysis of 3D Rough Surface of Nongaussian Height Distribution
비정규 높이분포를 가진 3차원 거친 표면의 탄.소성접촉해석
Abstract
Surface roughness plays a significant role in friction, wear, and lubrication in machine components. Most engineering surfaces have tile nogaussian height distrubution. So, in this study, elastic-plastic contact simulations are conducted for not only gaussian surfaces but also nongaussian surfaces. Nongaussian rough surface considering the kurtosis is generated numerically. The contact simulation model takes into account the plastic deformation behaviors of asperities by setting a celing on their contact pressure at material hardness value. It will be shown that the performace variables such as real contact area fraction, plastic area fraction and average gap are sensitive to the characteristics of surface geometry according to kurtosis.
Keywords
- Elastic-plastic contact analysis;
- Nongaussian surface;
- Kurtosis;
- Real contact area fraction;
- Plastic area fraction;
- and Average gap