文献类型：期刊文献

中文题名：飞机搭接铆接应力/应变特征试验与数值研究

英文题名：Study of riveting induced stress/strain characteristics in lap joints by experimental and finite element analysis

作者：曾超 邹鸿

第一作者：曾超

机构：[1]贵州理工学院航空航天工程学院,贵州贵阳550003

第一机构：贵州理工学院航空航天工程学院

年份：2020

卷号：48

期号：3

起止页码：54-60

中文期刊名：轻合金加工技术

外文期刊名：Light Alloy Fabrication Technology

收录：北大核心:【北大核心2017】；

基金：国家自然科学基金(批准号:51575273);贵州省普通高等学校工程研究中心资助项目(批准号:KY2018007);贵州理工学院军民融合专项资助项目(批准号:KJZX17-011)。

语种：中文

中文关键词：残余应力;应变;搭接接头;铆接;疲劳寿命

外文关键词：residual stress;strain;lap joint;riveting;fatigue life

摘要：铆接搭接头的疲劳性能与铆接残余应力有很大的关系,尤其是与贴合面上的应力分布相关。对铆接飞机搭接头的应力应变特征进行了数值和试验研究,数值分析采用了显式动力与通用静态相结合的方法,设计了一种特殊的试件用于铆接叠层贴合表面应变测量。结果表明:试验测量与有限元分析结果具有较好的一致性,在叠层贴合面上板和下板之间的应力特征存在差异。铆接既可以引入残余压应力也可以引入残余拉应力,但残余应力水平并不总是随着铆接力的增大而增大。
The fatigue performance of the riveted lap joint has a great relationship with the riveting residual stress,especially the stress distribution on the faying surface.The stress and strain characteristics of the riveted aircraft lap joints were studied numerically and experimental!y.The numerical analysis was implemented using a combination of explicit dynamic method and general static method.A special specimen was designed for the test of strain variations on the faying surface of the sheet.The result shows good conformance between the experimental measurements and the finite element analysis.On the faying surface,the stress characteristics may be different between the upper sheet and the lower sheet.Both compressive residual stress and tensile residual stress can be introduced by riveting,however,the improvement of stress level does not always increase with the increase of riveting force.