东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (9): 1268-1276.DOI: 10.12068/j.issn.1005-3026.2024.09.007

• 机械工程 • 上一篇    

装配工艺参数对止口螺栓连接结构力学特性的影响分析

罗忠1,2,3(), 罗永恒1,2, 熊鑫1,2,3, 吴法勇4   

  1. 1.东北大学 机械工程与自动化学院,辽宁 沈阳 110819
    2.东北大学 航空动力装备振动及控制教育部重点实验室,辽宁 沈阳 110819
    3.东北大学 佛山研究生创新学院,广东 佛山 528312
    4.中国航发沈阳发动机研究所,辽宁 沈阳 110015
  • 收稿日期:2023-05-06 出版日期:2024-09-15 发布日期:2024-12-16
  • 通讯作者: 罗忠
  • 作者简介:罗 忠(1978-),男,内蒙古集宁人,东北大学教授,博士生导师.
  • 基金资助:
    广东省粤佛联合重点基金资助项目(2020B1515120015);国家自然科学基金资助项目(12272089)

Analysis of Influence of Assembly Process Parameters on Mechanical Properties of Bolted Joint with Spigots

Zhong LUO1,2,3(), Yong-heng LUO1,2, Xin XIONG1,2,3, Fa-yong WU4   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.Key Laboratory of Vibration and Control of Aero-Propulsion System,Ministry of Education,Northeastern University,Shenyang 110819,China
    3.School of Foshan Graduate Innovation,Northeastern University,Foshan 528312,China
    4.AECC Shenyang Engine Research Institute,Shenyang 110015,China. cn
  • Received:2023-05-06 Online:2024-09-15 Published:2024-12-16
  • Contact: Zhong LUO
  • About author:LUO Zhong,E-mail:zhluo@mail.neu.edu.

摘要:

以航空发动机转子系统中止口螺栓连接结构为研究对象,基于单螺栓连接结构分析弯曲刚度的非线性特征,利用ANSYS实体单元建模方法分析连接结构的弯曲刚度,重点讨论了有无止口连接、预紧力、螺栓直径、止口过盈量等装配工艺参数对连接结构弯曲刚度的影响规律,并分析了止口连接结构对转子系统固有特性的影响.研究结果表明:止口连接结构的弯曲刚度呈现分段特性;增大预紧力、螺栓直径以及止口过盈量能提高连接结构弯曲刚度;有无止口连接结构的转子系统前三阶固有频率的相对误差小于2%,止口连接结构能够降低转子系统的最大振动幅值.

关键词: 止口螺栓连接, 弯曲刚度, 接触界面, 装配工艺参数, 振动特性

Abstract:

The bolted joint with spigots of the aero?engine rotor system is taken as the research object, and the non?linear characteristics of the bending stiffness of the single bolted joint are analyzed. The bending stiffness of the bolted joint is analyzed by ANSYS, and the influence laws of such assembly process parameters as the bolted joint with or without a spigot, the initial preload of bolts, bolt diameter, and the interference of the spigot on the joint bending stiffness are discussed. The influence of the spigot on the inherent characteristics of the aero?engine rotor system is analyzed. The results show that the bending stiffness of the joint with the spigot presents piecework characteristics. Increasing preload of bolts, the bolt diameter and the interference of the spigot can improve the bending stiffness of the bolted joint. The relative error of the first three order natural frequency is less than 2% for rotor system with or without spigots. The bolted joint with spigots can reduce the maximum vibration amplitude of the rotor system.

Key words: bolted joint with spigots, bending stiffness, contact interface, assembly process parameter, vibration characteristics

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