Investigation on Improving Fretting Wears of Aeroengine Involute Spline Couplings Based on Tooth Profile Modification

Abstract

Abstract: The distribution law of the axial loads of involute spline couplings was analyzed. The fretting wear prediction process of involute spline couplings was established. A method for modifying the involute spline couplings' profile was presented. The research results show that the axial loads of involute spline couplings increase along the axial direction, while the different torsional stiffness, the different shear modulus, the different torsion modulus, and the different meshing length. The fretting wears of the spline with or without modification increase with the number of cyclic loads. After modification, the maximum fretting wear amounts of the involute spline couplings at the shaft end are as 51 μm, the maximum fretting wear amounts of the involute spline couplings at the middle position are as 96 μm, the maximum fretting wear amounts of the involute spline couplings at shaft end are as 78 μm.

Key words: involute spline coupling axial load, arbitrary Lagrangian Eulerian(ALE) smoothing algorithm, fretting wear, tooth profile modification

摘要： 分析了航空渐开线花键副轴向载荷的分布规律,建立了其微动磨损量预估流程,提出了一种航空渐开线花键副齿向修形方法。研究结果表明：不同扭转刚度、剪切模量、剖面抗扭模量、结合长度时，花键副沿轴向的载荷均增大；修形前后的花键副微动磨损量均随载荷循环次数的增加而增大；修形后，轴端花键齿接触区域的最大磨损量为51 μm，轴中间接触区域的最大磨损量为96μm，轴末端接触区域的最大磨损量为78 μm。

关键词: 渐开线花键副, 轴向载荷, 任意拉格朗日-欧拉光滑算法, 微动磨损, 齿向修形

CLC Number:

V233.1

XUE Xiangzhen1;HUO Qinxin1;ZHENG Jiahong1;CHEN Xi2;QIN Liyun2. Investigation on Improving Fretting Wears of Aeroengine Involute Spline Couplings Based on Tooth Profile Modification[J]. China Mechanical Engineering.

薛向珍1;霍启新1;郑甲红1;陈曦2;秦利云2. 基于齿向修形的航空渐开线花键副抗微动磨损研究[J]. 中国机械工程.

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