Modelling of Harmonic Response of Scarf Adhesive Joints

Awad A Alqahtani,Khalid H Almitani,Ramzi Othman

doi:10.24018/ejers.2021.6.3.2429

Abstract

Adhesives are used for attaching structures to various spacers such as tubular and scarf joints to replace the traditional joining methods of welding, brazing, soldering, etc. Many of the unique features associated with adhesives are low manufacturing cost, long component life, and lightweight. Accordingly, a considerable amount of study has been carried out and is still underway to develop. The main objective of this study is to investigate the response of the scarf joints when exposed to a harmonic load. The finite element method (FEM) using ANSYS is availed to study and analysis the natural frequencies, mode shape, and frequency response. Additionally, the influence of the adhesion angle is examined.

Highlights

Scarf joints involve complex deformation states especially when using the traditional attachment techniques [1]
We have studied the frequency response of the (ClampedFree) Aluminum scarf joint for different angles and there is no significant effect (Fig. 7)
Many of the unique features associated with adhesives are low manufacturing cost, long component life, and lightweight

Summary

Introduction

Scarf joints involve complex deformation states especially when using the traditional attachment techniques [1]. The use of adhesives in the joining of scarf structures has been steadily increasing [2], [3]. This use of adhesives comes amidst the urge to replace these old methods, such as brazing, welding, and soldering. The utilization of adhesives has been found to reduce the production cost, as well as to make components’ life longer by decreasing the response to vibrations. The characteristics of these adhesive materials are remarkable. Scarf joints are believed to have defects, such as gaps, voids, ineffective surface, and curing, which may affect the quality of the bond, as well as both dynamic, and static responses [16]

Objectives

Methods

Findings

Conclusion