复合材料胶接接头多加载工况下的力学性能  

Mechanical Properties of Composite Adhesively Bonded Joints under Multiple Loading Conditions

作　　者：王锴 魏杨 何宗锴 曹琼方 WANG Kai;WEI Yang;HE Zong-kai;CAO Qiong-fang(The State Key Laboratory of Heavy-duty and Exptress High-power Electric Locomotive,Zhuzhou 412001,China;State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle,Hunan University,Changsha 410082,China)

机构地区：[1]重载快捷大功率电力机车全国重点实验室,株洲412001 [2]湖南大学整车先进设计制造技术全国重点实验室,长沙410082

出　　处：《科学技术与工程》2024年第26期11180-11187,共8页Science Technology and Engineering

基　　金：中车株洲电力机车有限公司科技研发项目(2022KJ108)。

摘　　要：为研究复合材料胶接接头在多种加载工况下的静动态力学响应和失效模式,以单搭接胶接接头作为研究对象,以碳纤维增强复合材料(carbon fiber reinforced plastic,CFRP)和铝合金作为接头基板材料,以柔性聚氨酯胶黏剂作为连接材料,对接头开展准静态拉伸试验、动态拉伸试验、准静态三点弯曲试验及面外冲击试验。对比分析了加载工况和基板材料对胶接接头力学性能的影响。结果表明:胶接接头具有显著的应变率效应,且基板材料性能会影响胶接接头的静动态力学特性。In order to study the static and dynamic mechanical responses and failure modes of composite adhesively joints under various loading conditions,single-lap adhesively joints were used as the research object,and CFRP(carbon fiber reinforced plastic) and aluminum alloy were used as substrates.Flexible polyurethane adhesive was used as the connecting material,and quasi-static tensile test,dynamic tensile test,quasi-static three-point bending test and out-of-plane impact test were carried out on the joint.The effects of loading conditions and substrate materials on the mechanical properties of adhesively joints were comparatively analyzed.The results show that the adhesively joint has a significant strain rate effect,and the substrate material properties will affect the static and dynamic mechanical properties of the adhesively joint.

关 键 词：胶接接头 动态拉伸 面外冲击 力学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]