Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
A NUMERICAL ANALYSIS OF THE MECHANICAL BEHAVIOR OF BONDED AND HYBRID JOINTS
Submission Author:
Joseph Richard Pinheiro de Carvalho , RJ , Brazil
Co-Authors:
Joseph Richard Pinheiro de Carvalho, Ricardo Alexandre Amar de Aguiar, Hector Costa, Pedro Manuel Calas Lopes Pacheco, Juliana Primo Basílio de Souza
Presenter: Joseph Richard Pinheiro de Carvalho
doi://10.26678/ABCM.COBEM2019.COB2019-0369
Abstract
The increasing demand for new technologies to improve products and reduce costs expand the usage of hybrid techniques to join materials in industry. This technique adds the benefits of two or more joining techniques to the material joint. The automotive and aerospace industry is using and developing the method for joining metallic thin sheets through hybrid welds, resulting from the combination of electrical resistance spot welding and bonding with structural adhesives. The present study has the objective of evaluating the mechanical behavior of single-lap joints manufactured by adhesive bonding, spot welding and a hybrid of both techniques using a numerical model based on the finite element method, simulating the shear test. The interstitial free steel (IF steel) was the material used as the adherent and Syntho-SubseaTM LV Epoxy was the material used as the adhesive. The simulations of adhesive and hybrid joints have considered the model of cohesive zone material (CZM), which allows simulating the behavior of adhesive´s rupture, using strength criteria and fracture mechanics concepts. It was possible to discuss the simulated results compared the previous experimental tests, and to examine the contribution of each type joint method in the hybrid joint strength. The results showed that the simulations were able to capture the main characteristics and effects of the experimental tests.
Keywords
CZM, Hybrid joint, Adhesive, Resistance Spot Welding, Single-Lap
