一种斜撑离合器正向设计的校核方法与评判策略  

A Verification and Evaluation Method for Top-down Design of Sprag Clutches

作　　者：俞昊 卢敏[1] 陈利强 李政民卿 Yu Hao;Lu Min;Chen Liqiang;Li Zhengminqing(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Jincheng Nanjing Engineering Insitute of Aircraft System,Aviation Industry Corporation of China,Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]中国航空工业集团公司金城南京机电液压工程研究中心,江苏南京211106

出　　处：《机械传动》2023年第10期63-68,共6页Journal of Mechanical Transmission

基　　金：航空科学基金项目(202028052007)。

摘　　要：提出了一种斜撑离合器正向设计的校核方法与评判策略,用于离合器服役性能的预测与评判。将离合器楔块与内外轴作为整体研究对象,提炼出综合应力、接触应力、楔角、升程百分比4项指标,并推导出对应的校核计算模型;进一步地,归纳出离合器正向设计优劣的综合评判策略。以J8331型号的离合器为例,从理论解析与有限元仿真两方面入手,对比验证了本文方法与策略的可行性,并据此得出载荷与上述指标之间呈非线性正相关性的动态规律。A verification and evaluation method for the top-down design of sprag clutches is proposed for the prediction of the clutch performance.The research targets are associated with sprag,inner and outer shafts,so four mathematic verification models are derived from von Mises stress,contact stress,gripping angle,and per⁃cent of sprag rise,which are refined from the comprehensive performance.Taking the clutch of model J8331 as an example,the feasibility of the method and strategy proposed in this study is compared and verified through theoretical analysis and finite element simulation.Based on this,a dynamic law of nonlinear positive correlation between load and the above indicators is obtained.

关 键 词：斜撑离合器 综合应力 接触应力 楔角 楔块升程 正向设计 评估 

分 类 号：V233.1[航空宇航科学与技术—航空宇航推进理论与工程]