Influence of position error of bolt hole on assembly mechanical characteristics of short precision bolted connection structure

被引：0
|
作者：
Jiao J. [1 ,2 ]
Mo R. [1 ,2 ]
Xu G. [3 ]
Fu X. [3 ]
Sun H. [1 ,2 ]
Chang Z. [1 ,2 ]
机构：
[1] Key Laboratory of High Performance Manufacturing for Aeroengine, Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi'an
[2] Institute for Aero-engine Smart Assembly of Shaanxi Province, Northwestern Polytechnical University, Xi'an
[3] Sichuan Gas Turbine Establishment, Aero Engine Corporation of China, Mianyang
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2021年 / 36卷 / 05期
关键词：
Assembly process; Connection stiffness; Mechanical property; Positioning error; Short precision bolted connection;
D O I：
10.13224/j.cnki.jasp.2021.05.005
中图分类号：
学科分类号：
摘要：
In order to study the influence of position error of bolt hole on assembly mechanical characteristics, the error model and finite element model considering the position error were built, and the influences of position error on the connection stiffness and stress of bolt hole edge of single short precision bolted connection structure were studied. Computing model and finite model of position error of short precision bolt group were established, and the effects of assembly phases of two parts and assembly position of the 1st bolt on connection stiffness of short precision bolt group were analyzed. It was concluded that position error had a small influence on axial stiffness, and a significant effect on tangential stiffness. The projection of position error in the direction of tangential load was a major influencing factor to the tangential stiffness, and the stress of bolt hole edge reached the maximum at the position of 180°. By computing and comparing standard deviation of the projection and length of position error, three better assembly plans of bolts were obtained. © 2021, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：935 / 947
页数：12
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