航空发动机机匣螺栓连接结构力学特性影响因素

孙衍山; 曾周末; 杨昊

doi:10.13433/j.cnki.1003-8728.2017.1225

航空发动机机匣螺栓连接结构力学特性影响因素

doi: 10.13433/j.cnki.1003-8728.2017.1225

孙衍山^1,2,
曾周末^1, ,,
杨昊¹

1.
天津大学精密测试技术及仪器国家重点实验室, 天津 300072;
2.
北京航峰科伟装备技术股份有限公司, 北京 100141

基金项目:

国家重点基础研究发展计划项目（2011cb610505）与国家自然科学基金项目（61240038）资助

详细信息

作者简介:
孙衍山(1982-),工程师,博士,研究方向为油液在线检测技术、微电子机械系统,sun_yanshan@126.com

通讯作者:
曾周末(联系人),教授,博士生导师,zhmzeng@tju.edu.cn

计量
- 文章访问数: 191
- HTML全文浏览量: 33
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2016-12-16
- 刊出日期: 2017-12-15

Analysis of Influencing Factors on Mechanical Characteristics of Bolt Connection Structure in Aircraft Engine

Sun Yanshan^1,2,
Zeng Zhoumo^{1
, ,},
Yang Hao¹

1.
State Key Laboratory of Precision Measurement Technology and Instrument, Tianjin University, Tianjin 300072, China;
2.
Beijing Hang Feng Ke Wei Equipment Technology Co., Ltd., Beijing 100141, China

摘要

摘要: 由于航空发动机机匣的不连续性，机匣的力学传递特性将受到影响。对传统静子机匣部件振动特性进行分析时，常不考虑机匣螺栓连接结构的影响，从而导致仿真计算的结果产生较大的偏差。基于国内外研究现状，建立螺栓连接结构的有限元分析模型，在力学传递特性方面研究了螺栓预紧力、螺栓分布和螺栓数量对机匣抗弯刚度和振动频率的影响。结果表明：航空发动机机匣螺栓连接结构会导致其结构刚度下降；螺栓预紧力、螺栓分布和螺栓数量是影响航空发动机机匣抗弯刚度和振动频率的主要因素。
- 力学特性 /
- 接触刚度 /
- 螺栓连接结构 /
- 振动分析
Abstract: Since the aircraft engine casing is a non-continuous structure, which will affect the aircraft engine casing vibration characteristics. In the study of the vibration characteristics of the conventional stator box components, the bolt connection structure of the casing installation side is often neglected, resulting in a large deviation in the vibration simulation results. In this study, the finite element analysis model of bolted connection structure is established based on the finite element method. The influence of bolt preload, bolt distribution and bolt number on the bending stiffness and vibration frequency of the casing is studied. The results show that, due to the presence of the bolted connection structure, the structural rigidity of the casing is reduced. The bolt pretension, distribution and the number of bolts are the main factors that affect the bending stiffness and vibration frequency of an aero-engine case.
- mechanical properties /
- contact stiffness /
- bolt connection structure /
- vibration analysis

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参考文献(15)

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