装配间隙及垫片材料对碳纤维增强复合材料胶铆接头力学性能的影响  

Effect of Assembly Gap and Gasket Material on Mechanical Properties of Carbon Fiber Reinforced Composite Bond-Riveted Joints

作　　者：叶结和 张子博 徐野 梁景恒 郑自芹 宋鸿宇 YE Jiehe;ZHANG Zibo;XU Ye;LIANG Jingheng;ZHENG Ziqin;SONG Hongyu(CRRC Qingdao Sifang Co.,Ltd.,Qingdao 266111,China;No.52 Institute of China North Industries Group Yantai Branch Co.,Ltd.,Yantai 264003,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,青岛266111 [2]中国兵器工业第五二研究所烟台分所有限责任公司,烟台264003

出　　处：《机械工程材料》2024年第6期88-92,共5页Materials For Mechanical Engineering

摘　　要：制备了碳纤维增强复合材料(CFRP)胶铆接头,对其进行了单接缝拉伸剪切试验,研究了装配间隙(0,0.3,0.5,1.0 mm)和垫片材料(CFRP、无碱玻璃纤维布和EP6250环氧树脂胶黏剂)对接头拉伸-剪切力学性能和失效模式的影响。结果表明:不同装配间隙和垫片材料下,胶铆接头的载荷-位移曲线相似,均可分为弹性阶段、界面失效阶段、铆钉受力阶段和铆钉头部拉脱阶段;随着装配间隙增加,垫片材料为CFRP和纤维布的胶铆接头的极限载荷下降,垫片材料为胶黏剂的极限载荷基本不变,当装配间隙为1.0 mm时,垫片材料为胶黏剂的胶铆接头的极限载荷最大;当垫片材料为CFRP和纤维布时,不同装配间隙下胶铆接头的失效模式均为垫片侧胶面开裂,当垫片材料为胶黏剂时,胶铆接头失效模式均为CFRP板层间开裂。Carbon fiber reinforced composite(CFRP)bond-riveted joint was prepared,and single seam tensile shear test was carried out.The effects of assembly gap(0,0.3,0.5,1.0 mm)and gasket material(CFRP,alkali-free glass fiber cloth and EP6250 epoxy resin adhesive)on the tensile-shear mechanical properties and failure mode were studied.The results show that the load-displacement curves of the bond-riveted joints with different assembly gaps and gasket materials were similar,which could be divided into elastic stage,interface failure stage,rivet stress stage and rivet head pulling stage.With the increase of the assembly gap,the ultimate load of the bond-riveted joint with CFRP gasket and fiber cloth gasket decreased,and the ultimate load of the bond-riveted joint with adhesive gasket was basically unchanged.When the assembly gap was 1.0 mm,the ultimate load of the bond-riveted joint with adhesive gasket was the largest.When the gasket material was CFRP or fiber cloth,the failure mode of the bond-riveted joints was cracking of the rubber surface on the side of the gasket;when the gasket material was the adhesive,the failure mode of the bondriveted joint was cracking in CFRP plates.

关 键 词：碳纤维 铆接 装配间隙 力学性能 失效模式 

分 类 号：TG494[金属学及工艺—焊接]