铝合金接头形状对碳纤维管粘接性能的影响研究  

Study on the Effect of Aluminum Alloy Joint Shape on the Bonding Performance of CFRP Tubes

作　　者：郭巍[1] 邬云斌 梁皓翔 GUO Wei;WU Yun-bin;LIANG Hao-xang(School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,China;School of International Education,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学汽车工程学院,武汉430070 [2]武汉理工大学国际教育学院,武汉430070

出　　处：《武汉理工大学学报》2023年第10期26-32,41,共8页Journal of Wuhan University of Technology

基　　金：国家大学生创新创业项目(3120400002340)。

摘　　要：碳纤维与铝合金的粘接在轻量化结构中有着广阔的应用场景,而胶接的质量与结构设计等多因素对于其整体力学性能有着不同的影响程度。以碳纤维管与铝合金接头的粘接出发,以DP490为粘接剂,研究铝合金接头槽型设计与胶层参数对于粘接的抗拉伸强度影响。利用拉伸实验得出力-位移数据匹配该处理工艺下的胶层参数,在Abaqus中利用cohesive element进行有限元仿真分析,得出理想胶层粘接状态下的粘接强度。结合仿真与实验数据,得出胶层参数对于粘接质量的影响,胶层越厚,粘接质量越差;胶层长度对粘接强度的影响最大,接头外径次之,胶层厚度最小;接头的横纹纵纹均可以有效提升粘接强度,且纵纹的性能提升尤为显著,最大拉力提升27.03%。The bonding of carbon fiber and aluminum alloy has a wide range of applications in lightweight structures,and multiple factors such as the quality and structural design of the adhesive joint have different degrees of influence on its overall mechanical properties.We use 3M-DP490 as bonding adhesive to study the effect of groove design and adhesive layer parameters on the tensile strength of bonding between carbon fiber tubes and aluminum alloy joints.The force-displacement data from the tensile test were used to match the adhesive layer parameters under the treatment process,and finite element simulations were performed in Abaqus using cohesive element to obtain the bond strength under the ideal adhesive layer.Combining the simulation and experimental data,it is concluded that the influence of the adhesive layer parameters on the bonding quality,the thicker the adhesive layer,the worse the bonding quality;the adhesive layer length has the greatest influence on the bonding strength,followed by the outer diameter of the joint,and the adhesive layer thickness is the smallest;the horizontal and longitudinal grooves of the joint can effectively improve the bonding strength,and the performance improvement of the longitudinal grooves is particularly significant,with a maximum tensile strength improvement of 27.03%.

关 键 词：粘接胶层 有限元分析 ABAQUS 碳纤维管 内聚力单元 

分 类 号：TG496[金属学及工艺—焊接]