Calculation Approach for the Design of Adhesive Joints under Predominant Peel

Abstract

There are currently different bonded joint geometries that the designer can choose from, including the single-lap joint, double-lap joint, stepped-joint, scarf joint, and tubular joint. Other geometries are designed to sustain peel loads, such as T-joints and L-joints. T-joints are used in different scenarios, including in aircraft (stiffener/skin joints) and in vehicles (B-pillar/rocker joints). The present work consists of a numerical analysis on the adhesive type effect in aluminium T-joints under peel loads, by cohesive zone modelling (CZM). However, CZM validation is previously accomplished. The joints’ assessment initiates with stress analysis, and prediction of maximum load (P_m), while geometrical modifications are also tested, to enable proposing the best solution for the joint. CZM revealed to be an accurate tool for these joints, and a significant geometric and adhesive influence was detected on the joint performance, which enabled to propose the best joint solution.