摘要
针对航空花键接触刚度数量级高导致的直接试验测量难度高、误差大的现状,以某型号航空发动机花键连接结构为研究对象,经过合理的简化与缩尺设计,建立相应的花键结构模型。仿真得到花键接触刚度及其随传递扭矩、横向力的变化规律,并搭建与仿真模型一致的试验台进行刚度测试。结果表明:当横向力不变时,花键的接触刚度随传递扭矩的增大而非线性增大,并逐渐趋于稳定;当花键处于相同的扭矩和横向力作用时,处于加载和卸载过程中的花键接触刚度值不同,并出现迟滞现象;试验测得在所有扭矩下的花键平均刚度值为20.48 MN/m,仿真结果与试验结果的平均误差为8.54%,试验与仿真结果取得了较好的一致性。该研究为航空花键接触刚度的研究提供了参考。
The high magnitude of the contact stiffness of aviation splines leads to the difficulty in direct measurement and notable test error.A spline structure model was established through reasonable simplification and scale design according to the actual spline connection structure of an aero-engine.Simulations were made to determine the spline contact stiffness and its variation with transmission torque and lateral force.A test bench consistent with the simulation model was built to test the contact stiffness.The results showed that when the transverse force was constant,the contact stiffness of the spline increased nonlinearly with the increase of transmission torque,and was inclined to be unchanged gradually.When the spline was under the same torque and lateral force,the contact stiffness of the spline was different during loading and unloading,and the hysteresis phenomenon occurred.The average contact stiffness of splines measured under all torques was 20.48 MN/m.The test and simulation results were in good agreement,with an average error of 8.54%.This study provides a reference for studying the contact stiffness of aviation splines.
作者
李英杰
赵广
袁运博
侯志强
郭梅
张大义
LI Yingjie;ZHAO Guang;YUAN Yunbo;HOU Zhiqiang;GUO Mei;ZHANG Dayi(School of Energy and Power Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;School of Control Science and Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;Shenyang Engine Research Institute,Aero Engine Corporation of China,Shenyang 110015,China;School of Energy and Power Engineering,Beihang University,Beijing 100191,China)
出处
《航空动力学报》
CSCD
北大核心
2024年第12期180-187,共8页
Journal of Aerospace Power
基金
自然科学基金(12172073,12302065)
国家科技重大专项(779608000000200007)。
关键词
航空花键
接触刚度
缩尺模型
有限元分析
刚度测试
aviation spline
contact stiffness
scale model
finite element analysis
stiffness measurement
作者简介
李英杰(1997−),男,博士生,主要从事航空花键动力学研究;通信作者:袁运博(1993−),男,助理研究员,博士,主要从事转子系统动力学及故障诊断研究。E-mail:yuanyunbo@dlut.edu.cn。
