涡轮起动机中斜撑离合器的瞬态冲击与楔合特性研究  

Analysis on the Transient Impact and Wedging Performance of the Sprag Clutch in the Turbine Starter

作　　者：卢敏[1] 陈利强[2] 李政民卿 Lu Min;Chen Liqiang;Li Zhenminqing(Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;AVIC Jincheng Nanjing Electromechanical Hydraulic Engineering Research Center,Nanjing 211106,China)

机构地区：[1]南京航空航天大学,江苏南京210016 [2]航空工业金城南京机电液压工程研究中心,江苏南京211106

出　　处：《航空科学技术》2024年第3期70-76,共7页Aeronautical Science & Technology

基　　金：航空科学基金(202028052007)。

摘　　要：将稳态楔合拓展至瞬态冲击是深入研究斜撑离合器正向设计的重要组成部分。本文从机械动力学理论出发,关联输入输出端载荷与响应特征,建立斜撑离合器冲击受载微分方程,揭示出离合器由瞬态楔合至稳态传动过程蕴含的动力学原理和一般规律。在此基础上,推导出斜撑离合器内外传动轴的综合应力分析模型,并提出运用接触应力、综合应力和楔角等指标整体考察离合器传动性能的校核方法。最后以某常见离合器部件为例,从理论计算和仿真分析两方面模拟了涡轮起动机环境下的短时受载工况,验证了本文原理和分析模型的有效性,因而对此类离合器的设计与校核分析具有重要意义。Extending the steady wedging to transient impact is an important component of top-down design for sprag clutch.Based on the theory of mechanical dynamics,the impact differential equation of the sprag clutch is established by correlating the load and response characteristics of the input and output parts,and the dynamic principle and general law are revealed that contained in the process of the clutch running from transient wedging to stable transmission.On this basis,the comprehensive stress analysis model of the transmission shafts is deduced.Moreover,the inspection method of the overall performance using the contact stress,comprehensive stress and gripping angle,etc is proposed.Finally,taking a common sprag clutch component as an example,the short-term load conditions in the turbo starter environment are studied from both theoretical calculation and simulation analysis,which verifies the principle and analysis model proposed in this paper,so they are of great significant for this kind of clutch in design and verification analysis.

关 键 词：涡轮起动机 斜撑离合器 瞬态冲击 正向设计 综合应力 

分 类 号：TH133.4[机械工程—机械制造及自动化]