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根据独立振子模型的能量耗散机理,提出一个用能量方法计算弹性接触光滑界面滑动摩擦力和摩擦系数的方法,并根据计算结果研究摩擦力和摩擦系数与摩擦副各种参数之间的关系。通过研究指出两摩擦副界面原子失稳跳跃后在平衡位置附近相对摆动是机械能耗散的关键。研究表明随着接触峰高度的增加摩擦力和摩擦系数也增加,当超过某个临界值时,摩擦力和摩擦系数基本上不再增加,此时能量方法与Bowden黏附摩擦理论公式计算值相近。
According to the energy dissipation mechanism of the independent oscillator model, a method for calculating the sliding friction and friction coefficient of the elastic contact smooth interface by energy method is proposed. According to the calculation results, the relationship between the friction and the friction coefficient and the various parameters of the friction pair is studied. It is pointed out that the relative oscillation around the equilibrium position after the instability and jump of the two friction interface atoms is the key to mechanical energy dissipation. The results show that the friction and friction coefficient increase with the increase of contact height. When the critical value is exceeded, the friction and friction coefficient basically do not increase any more. At this time, the energy method is similar to that calculated by Bowden’s adhesion friction theory.