航空发动机套齿连接结构刚度特性仿真分析及试验研究

doi:10.3969/j.issn.1004-132X.2022.18.012

中国机械工程 ›› 2022, Vol. 33 ›› Issue (18): 2249-2257.DOI: 10.3969/j.issn.1004-132X.2022.18.012

航空发动机套齿连接结构刚度特性仿真分析及试验研究

李伦绪1;陈果2;杨默晗3

1.南京航空航天大学民航学院，南京，210016
2.南京航空航天大学通用航空与飞行学院，常州，213300
3.中国航空发动机集团有限公司湖南动力机械研究所，株洲，412002

出版日期:2022-09-25 发布日期:2022-10-05
通讯作者: 陈果（通信作者），男，1972年生，教授、博士研究生导师。研究方向为航空发动机整机振动分析、状态监测与故障诊断。E-mail:cgzyx@263.net。
作者简介:李伦绪，男，1995年生，硕士研究生。研究方向为转子动力学。E-mail:lilunxu@nuaa.edu.cn。
基金资助:
国家科技重大专项（J2019-Ⅳ-004-0071)

Simulation Analysis and Experimental Study of Stiffness Characteristics of Aero-engine Spline Couplings

LI Lunxu1;CHEN Guo2;YANG Mohan3

1.College of Civil Aviation, Nanjing University of Aeronautics and Astronautics,Nanjing，210016
2.College of General Aviation and Flight,Nanjing University of Aeronautics and Astronautics,Changzhou,Jiangsu，213300
3.Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou，Hunan，412002

Online:2022-09-25 Published:2022-10-05

摘要/Abstract

摘要： 以航空发动机低压转子套齿连接结构为研究对象，分析了套齿连接结构弯曲刚度非线性特征及其产生机理，建立了考虑齿面接触的套齿连接结构实体有限元模型，进行了套齿连接结构静刚度试验，通过仿真和试验研究了套齿连接结构刚度非线性变化规律，讨论了配合间隙、拧紧力矩和扭矩对弯曲刚度的影响规律。研究结果表明，由于定位面的接触状态和受力情况不同，套齿连接结构的弯曲刚度变化主要分为两个阶段，具有分段非线性特征;套齿连接结构弯曲刚度对定位面的配合间隙较为敏感，减小定位面配合间隙可以有效提高结构的弯曲刚度；拧紧力矩对弯曲刚度的影响较小；在小载荷状态下，扭矩对弯曲刚度的影响十分明显。

关键词: 航空发动机, 低压转子, 套齿连接结构, 刚度特性

Abstract: Focusing on aero-engine low-pressure rotor spline couplings, the nonlinear characteristics of bending stiffness and the mechanism were analyzed, a solid finite element model of spline coupling considering gear surface contacts was established, the static stiffness experiments of the spline couplings were carried out. Through simulation and experiments, the nonlinear variation law of the structural stiffness of spline couplings was studied, and then the influence laws of fit clearance, tightening moment and torque on bending stiffness were discussed. The research results show that, due to the different contact states and stress conditions of the positioning surfaces, the bending stiffness variations of the spline couplings were mainly divided into two stages, which had piecewise nonlinear characteristics. The bending stiffness of the spline couplings is sensitive to the fit clearances of the positioning surfaces, and reducing the fit clearances of the positioning surfaces may effectively improve the bending stiffness of the structures; tightening moment has little influence on the bending stiffness, and under low load conditions, torque has an obvious effect on the bending stiffness.

Key words: aero-engine, low pressure rotor, spline coupling, stiffness characteristics

中图分类号:

V231.96

李伦绪, 陈果, 杨默晗. 航空发动机套齿连接结构刚度特性仿真分析及试验研究[J]. 中国机械工程, 2022, 33(18): 2249-2257.

LI Lunxu, CHEN Guo, YANG Mohan. Simulation Analysis and Experimental Study of Stiffness Characteristics of Aero-engine Spline Couplings[J]. China Mechanical Engineering, 2022, 33(18): 2249-2257.

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链接本文: http://www.cmemo.org.cn/CN/10.3969/j.issn.1004-132X.2022.18.012

http://www.cmemo.org.cn/CN/Y2022/V33/I18/2249

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航空发动机套齿连接结构刚度特性仿真分析及试验研究

Simulation Analysis and Experimental Study of Stiffness Characteristics of Aero-engine Spline Couplings

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