Abstract
Wear is an important factor for failures of mechanical components. Current research on wear is mainly focused on experiments while the numerical simulation of wear is hardly used owing to the complexities of the wear process. Explaining the effect of friction on the wear process is important, as it will lead to a deeper understanding of the evolution of wear. This study proposed a numerical method to expound the wear process in the contact between an elastic cylinder and a half-space simulating the ring-block tester. There are two difficulties during the calculation; one is that the contact shapes vary with time, causing the pressure distribution to change simultaneously and the other is the integral equation for calculating the contact pressure under different worn shapes. In the present study, the wear rate was computed using Archard’s law and the wear process was calculated step by step until the specified total sliding distance was achieved. During each step of the calculation, the contact topography was updated. The simulation intuitively reproduced the contact state of change from line to surface contact throughout the wear process. Reasonable agreements on the changes of the wear scar, achieved from experiments and numerical simulations, were obtained.
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We appreciate the financial support from the National Nature Science Foundation of China (No. 51575190).
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Wanglong ZHAN. He received his bachelor degree in mechanical engineering in 2014 from Jiangxi Agricultural University, Nanchang, China. After then, he is a Ph.D. candidate in mechanical engineering at the South China University of Technology, Guangzhou, China. His research area is mainly about the measurements and numerical calculations of friction and wear.
Huang PING. He received his Ph.D. degree in solid mechanics from Tsinghua University in 1989. He currently is the professor of School of Mechanical and Automotive Engineering, South China University of Technology. His research areas cover theories and calculations of lubrications of Newtonian and non-Newtonian fluid, elasto-hydrodynamic lubrication, friction and wear.
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Zhan, W., Huang, P. Numerical analysis of time-varying wear with elastic deformation in line contact. Friction 7, 143–152 (2019). https://doi.org/10.1007/s40544-017-0195-1
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DOI: https://doi.org/10.1007/s40544-017-0195-1