用能量方法计算滑动摩擦力的研究

摘要

An energy principle method is used to calculate and research the friction force and friction coefficient of two flat elastic surfaces. The studies reveal the relationships between friction coefficient and parameters of a tribo-system. The research suggests that the oscillation of interfacial atoms in the new balance position after jumping is the key of energy dissipation. When the height of an asperity increases in the model, the friction coefficient increases rapidly to a critical value, which is close to the calculation results of Bowden's adhesion equation.%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.