Journal
OPTICS AND LASER TECHNOLOGY
Volume 48, Issue -, Pages 422-431Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2012.10.020
Keywords
Cavitation; Tribological performances; Textured surfaces
Categories
Funding
- Fundamental Research Funds for the Central Universities of PR China [CDJZR10 28 55 01]
- program for New Century Excellent Talents of Ministry of Education of PR China [NCET-10-0881]
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The influence of cavitation in a lubricant under different conditions on tribological performances of a textured surface was investigated numerically. The investigation is carried out using dimples with divergent-convergent shape under the conditions of different dimple distributions, dimple depths, and different width to length ratio of solution domain (k). In doing so, an extended Reynolds equation is used to solve pressure, incorporating cavitation effect and elastic deformation of the textured surface evaluated with continuous convolution fast Fourier transform (CC-FFT). Numerical results show that the cavitation can increase the load-carrying capacity, and decrease the friction force and further the friction coefficient for tribological pairs. For the metioned dimples, whether the k value or the dimple depth increases, the cavitated area will approach a stable value. The above influences depend on the dimple distribution and its depth, or the k value. Meanwhile, some of the above conclusions are also validated with the experimental results. (C) 2012 Elsevier Ltd. All rights reserved.
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