盘鼓组合结构变形不协调及刚度特性分析*

doi:10.16731/j.cnki.1671-3133.2026.03.010

现代制造工程 ›› 2026, Vol. 546 ›› Issue (3): 86-96.doi: 10.16731/j.cnki.1671-3133.2026.03.010

• CAD/CAE/CAPP/CAM • 上一篇下一篇

盘鼓组合结构变形不协调及刚度特性分析^*

孙嘉志¹, 舒启林¹, 邹存建¹, 韩清凯², 潘禹臣¹, 翟敬宇³

1 沈阳理工大学机械工程学院,沈阳 110159;
2 东北大学机械与自动化学院,沈阳 110819;
3 大连理工大学机械工程学院,大连 116024

收稿日期:2025-06-04 出版日期:2026-03-18 发布日期:2026-04-03
作者简介:孙嘉志,硕士研究生,主要研究方向为结构力学分析与优化设计。舒启林,博士,教授,主要研究方向为现代设计理论与方法。邹存建,博士,讲师,主要研究方向为转子动力学与振动。E-mail:1114264874@qq.com
基金资助:
* 中国航空发动机集团产学研合作项目(HFZL2019CXY021-1)

Analysis of structural deformation incoordination and stiffness characteristics of the disk-drum assembly structures

SUN Jiazhi¹, SHU Qilin¹, ZOU Cunjian¹, HAN Qingkai², PAN Yuchen¹, ZHAI Jingyu³

1 School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China;
2 School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China;
3 School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China

Received:2025-06-04 Online:2026-03-18 Published:2026-04-03

摘要/Abstract

摘要： 盘鼓组合结构是航空发动机核心机转子的组成部分。由于加工制造和装配存在局限性,加之其受高温、高压和高转速等恶劣环境影响,会出现变形不协调和连接刚度分散性大等特点,影响盘鼓组合结构乃至转子的运行稳健性。针对某型航空发动机核心机常用的2种盘鼓组件,首先,介绍了其结构特点和受力情况;其次,建立了有限元模型并开展外翻边盘鼓组合结构的模态试验,验证了模型的准确性;然后,开展考虑热-力耦合载荷下盘鼓组合结构变形的不协调分析,研究各敏感位置点变形不协调程度;最后,考虑到拧紧工艺的局限性和缺少装配偏差与连接刚度之间的映射关系,研究内翻边盘鼓组件预紧力偏差与静刚度之间的关系。研究结果表明,在真实工作条件下2种盘鼓组合结构端面及止口配合处均会发生变形不协调现象,外翻边组合结构比内翻边组合结构的整体变形不协调程度高35.75 %;盘鼓组件的轴向、弯曲刚度随着预紧力偏差的增加均呈现不同程度的下降,但内翻边在切向刚度上有较小程度的上升,其中外翻边对预紧力偏差的敏感性更高,内翻边因结构约束表现出更好的刚度稳定性。

关键词: 热-力耦合载荷, 盘鼓组合结构, 不协调性变形, 预紧力偏差, 刚度特性

Abstract: The disk-drum assembly structure is a component of the rotor in the core engine of an aircraft. Due to the limitations in manufacturing and assembly,as well as the influence of harsh environments such as high temperature,high pressure,and high speed,it may exhibit characteristics such as inconsistent deformation and large dispersion in connection stiffness,which affects the operational stability of the disk-drum assembly structure and even the rotor. For two commonly used disk-drum assemblies in a certain type of aero-engine core engine,their structural features and force conditions were firstly introduced. Then,a finite element model was established and modal tests on the outward flanged disk-drum assembly structure were conducted to verify the accuracy of the model. Subsequently,the analysis of inconsistent deformation in the disk-drum assembly structure considering thermal-mechanical coupling loads was carried out to study the degree of inconsistent deformation at each sensitive position. Finally,considering the limitations of the tightening process and the lack of a mapping relationship between assembly deviation and connection stiffness,the relationship between the preload deviation in the inward flanged disk-drum assembly and its static stiffness was studied. The results of the study show that under real working conditions,inconsistent deformation occurs at the end face and the mating surface of the stop of both disk-drum assembly structures. The overall degree of inconsistent deformation in the outward flanged assembly structure is 35.75 % higher than that in the inward flanged assembly structure. The axial and bending stiffness of the disk-drum assembly decrease to varying degrees with the increase of the preload deviation,but the tangential stiffness of the inward flanged assembly increases slightly. Among them,the outward flanged assembly is more sensitive to preload deviation,while the inward flanged assembly shows better stiffness stability due to structural constraints.

Key words: thermal-mechanical coupling load, disk-drum assembly, inconsistent deformation, preload deviation, stiffness characteristics

中图分类号:

V232.2

孙嘉志, 舒启林, 邹存建, 韩清凯, 潘禹臣, 翟敬宇. 盘鼓组合结构变形不协调及刚度特性分析^*[J]. 现代制造工程, 2026, 546(3): 86-96.

SUN Jiazhi, SHU Qilin, ZOU Cunjian, HAN Qingkai, PAN Yuchen, ZHAI Jingyu. Analysis of structural deformation incoordination and stiffness characteristics of the disk-drum assembly structures[J]. Modern Manufacturing Engineering, 2026, 546(3): 86-96.

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盘鼓组合结构变形不协调及刚度特性分析^*

Analysis of structural deformation incoordination and stiffness characteristics of the disk-drum assembly structures

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