Abstract
Improvement of joint quality has always being a call for concern in an assembled component due to numerous application of such components in immense industrial sectors such as aerospace and automotive industries, electrical/electronic industries etc. With this in mind quite a vast research had been carried out and still on going to enhance the characteristics of various parts that makes up an assemble and the complete assemble itself. Part of the research carried out fixated on adhesive bonded joint of different geometrical designs such as L-shape, single-lap, double-lap, tubular, T-shaped, stepped and scarf joints etc. Focusing on single –lap joint due to the simplicity of the design geometry and their ease of fabrication, various forms of arrangement have been researched on. But owing to its untimely failure, caused by high strength concentration in the overlapping areas and some other parts that are delicate to peel damage various forms of design geometry have been adopted ranging from tapering, stepping and wavy lapping of overlapping layers in order to reduce or mitigate the stress concentration for an improved load bearing ability. Due to a lot of challenges being faced with difficulty in fabrication, this study focused on double layer single-lap joint. Its harmonic response when subjected to external dynamic loading was investigated with the use of Ansys finite element analysis. The numerical analysis was carried out on various forms of adhesive-adherends arrangement, and from the harmonic response obtained it showed that the double layer single-lap joint have improved load bearing capacity as compared with other geometrical designs.
Highlights
With the zeal to enhance the quality of joints in an assembled component, and due to an extensive application of adhesive bonded joint in vast industrial sectors such as aerospace and automotive industries, electrical/ electronic industries, there have been an increase in the approaches used to study the response of adhesively bonded joints
A lot of research based upon experimental analysis have been examined for example, recently, Prabhakar and Garcia found out that using 3D printed reinforcement (i.e. infusing structural strengtheners to the adherends through fused deposition modelling (FDM) additive technique, the visible shear strength of adhesively bonded single lap joints can be improved to about 832% [2]
From the validation result shown above, it can be seen that the numerical analysis which was carried out on the double layer single lap adhesively bonded joints were developed in order to model its harmonic response when subjected to external force
Summary
With the zeal to enhance the quality of joints in an assembled component, and due to an extensive application of adhesive bonded joint in vast industrial sectors such as aerospace and automotive industries, electrical/ electronic industries, there have been an increase in the approaches used to study the response of adhesively bonded joints. Different geometries can be obtainable for adhesively bonded joints depending on the area and type of application. There are a lot of advantages of adhesively bonded joint over traditional mechanical fasteners. Some of the advantages can be seen in aircraft where fibre reinforced polymer matrix composites (FRPCs) are used for improved damaged tolerance and lower structural weight designs [2]. The most common disadvantage associated with adhesively bonded joint is the fatigue damage they experience which may be due to continuous vibration, crash and impact and for this reason it became necessary to study their dynamic response or behavior. The approach for the dynamic behavior analysis may be experimental, numerical or analytical [3], but in this study one out of the three approach will be considered which is the numerical finite analysis
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