机电工程技术2025，Vol.54Issue(20)：63-67,73,6.DOI:10.3969/j.issn.1009-9492.2025.20.012
基于ABAQUS的航天产品振动条件下螺栓连接预紧力衰退机理研究
Study on the Mechanism of Preload Decay of Bolted Connection under Vibration of Aerospace Products Based on ABAQUS
王宏坤 1李欣 1杨小健1
作者信息
- 1. 北京计算机技术及应用研究所,北京 100080
- 折叠
摘要
Abstract
The form of fastener bolts used in aerospace products has widespread application in spacecraft.Threaded connections have the advantages of simple and reliable structure,convenient assembly,and high reliability.However,when the threaded connection structure is subjected to impact,vibration,thermal stress cycles,etc.in complex working conditions,the preload of the bolts will gradually decrease,i.e.,the bolts will loosen,which will seriously affect the reliability of aerospace products.Researching the failure mechanism of the threaded connection loosening has important scientific significance.Based on the theoretical mathematical model,SolidWorks and Hypermesh software are used in this experiment to establish a fine-grained finite element model,and Abaqus software is used to simulate the threaded connection loosening mechanism.The change of the preload of the bolts under different vibration loading directions are studied.The calculation shows that when subjected to a single direction vibration load,lateral vibration is the main factor causing the reduction of the preload,lateral vibration leads to serious loosening of the threaded connection,and the influence of other directions of vibration on the reduction of the preload is not obvious;when lateral vibration is coupled with a vibration load in another direction,the reduction of the preload is obvious,the reduction of the preload is approximately equal to the sum of the reduction of the preload in the two individual directional loads.During the service period of aerospace products,as much attention as possible should be paid to the bolt state under a lateral vibration environment,and necessary anti-loosening measures should be taken to avoid problems.关键词
螺栓连接/预紧力/振动/有限元Key words
bolted connection/preload force/vibration/finite element分类
机械制造引用本文复制引用
王宏坤,李欣,杨小健..基于ABAQUS的航天产品振动条件下螺栓连接预紧力衰退机理研究[J].机电工程技术,2025,54(20):63-67,73,6.
