基于时变载荷的齿轮摩擦功率损失计算研究

应用齿轮啮合原理、齿轮接触分析和摩擦学理论,提出考虑齿轮瞬态啮合过程中传动效率随齿面接触载荷时变的齿轮摩擦功率损失计算方法；建立了啮合齿面间的相对运动速度、接触压力、滑动摩擦系数及摩擦功率损失的计算模型,并编制了计算程序；分析了齿轮几何参数、运行工况及润滑油温度等对齿轮摩擦功率损失的影响规律.研究结果为齿轮传动及其润滑系统的合理设计提供理论依据.

Calculation of friction power losses on gears based on time-varying contact load

According to the theory of gear meshing, gear contact analysis and tribology theory, a general methodology was proposed for predicting the friction power losses of involute gears, which considered the gears whose transmission efficiency changed with gear surface contact load. This methodology integrated a relative sliding speed model, gear contact pressure model and a sliding friction coefficient model with a heat generation formulation to predict the friction power losses of involute gears. And the calculation software was developed. The influence of basic gear geometric parameters, operating conditions and lubricant temperature on friction power losses of involute gears were investigated. This methodology and conclusions may be helpful for the design of gearing and lubricating system．