直升机浮动渐开线花键微动磨损影响因素分析

为探究不同磨损影响因素对浮动花键磨损的影响程度,基于能量耗散理论,建立了花键副微动磨损预测模型,分析了扭矩、载荷波动、花键材料、摩擦因数、轴向不对中以及角向偏心对浮动花键的磨损影响规律;同时建立熵权-模糊关联分析模型,客观分析了不同磨损影响因素对花键磨损的关联程度.结果显示:基于能量耗散的微动磨损模型所计算的花键齿顶、...

Analysis of influencing factors of fretting wear with helicopter floating involute spline

In order to explore the influence of different wear influencing factors on the wear of floating spline, a fretting wear prediction model of spline pair was established based on the energy dissipation theory. The influences of torque, load fluctuation, spline material, friction factor, axial misalignment and angular eccentricity on the wear of floating splines were analyzed. Meanwhile, an entropy weight-fuzzy correlation analysis model was established to objectively analyze the correlation degree of different influencing factors on the wear of floating involute splines. The results showed that the calculated difference of the maximum wear depth at the top, middle and root of tooth for the spline based on the energy dissipation wear model was lower than 6.9%, 2.4% and 14%, respectively. The angular eccentricity of the spline caused poor contact at the start and stop positions of some teeth, resulting in uneven distribution of wear on both ends of the spline. The angular eccentricity, axial misalignment and material properties were more sensitive to the fretting wear of the spline pairs, providing a technical support for the research on the anti-wear method of the floating spline.