滑动速度对铜基石墨复合材料摩擦特性影响的数值模拟
Numerical Simulation of the Effect of Sliding Speeds on Tribological Properties of Copper Matrix Graphite Composite

作者: 马刘洋 , 陈亚军 , 解 挺 :合肥工业大学摩擦学研究所,安徽 合肥;

关键词: 滑动速度铜基石墨复合材料离散元石墨磨损Sliding Speed Copper Matrix Graphite Composite Discrete Element Graphite Wear

摘要: 采用离散元软件建立了铜基石墨复合材料与45钢滑动摩擦模型,研究了滑动速度对摩擦面上石墨动态演变和铜基石墨复合材料摩擦学行为的影响。结果表明:摩擦面上石墨颗粒经历形成和稳定二个阶段,滑动速度越大,摩擦面上石墨颗数越快达到动态稳定状态。滑动速度增大,石墨润滑层难以在磨损表面有效形成,加速了其脱落的进程,导致摩擦因数增大,磨损量增加。

Abstract: It was studied that effect of sliding velocity on the dynamic evolution of graphite on the friction surface and tribological behavior of copper matrix graphite composite by discrete element software. The sliding friction model has been established between the copper matrix graphite composite with 45 steel. It is showed that graphite particles on the friction surface undergo two stages of formation and stabilization. The higher the sliding speed is, the faster the number of graphite particles on the friction surface reaches the dynamic stability state. Under the higher speed, the graphite lubrication layer is difficult to form effectively on the worn surface, accelerating the process of its shedding. As a final result, the friction coefficient is bigger and the wearing capacity is more.

文章引用: 马刘洋 , 陈亚军 , 解 挺 (2020) 滑动速度对铜基石墨复合材料摩擦特性影响的数值模拟。 材料科学, 10, 472-476. doi: 10.12677/MS.2020.106057

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