Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EFFECT EVALUATION OF THE ADHESIVE THICKNESS VARIATION IN SINGLE LAP JOINTS BONDED WITH STRUCTURAL ADHESIVE
Submission Author:
RANULFO MARTINS CARNEIRO NETO , RJ
Co-Authors:
Lorena Silva, RANULFO MARTINS CARNEIRO NETO, Eduardo Sampaio, Lucas Vignoli
Presenter: RANULFO MARTINS CARNEIRO NETO
doi://10.26678/ABCM.COBEM2019.COB2019-0276
Abstract
The usage of bonded joint is increasing as an alternative way of mechanical joining such as weld, bolt and nut or rivets. This occurs, besides other aspects, because the weight reduce, facility of joining both different or same materials and more distributed stresses along the adhesive. To design the bonded joints with more reliability it is essential to understand stresses states between the material and the adhesive. This paper presents experimental results of single lap joints (SLJ) in accordance with ASTM 1002 standard. They were bonded with a structural adhesive for three different thickness: 0,4mm, 0,8mm and 1,5mm. The joints of each group were modelled numerically using the cohesive zone model (CZM), being these results compared with the experimental values. The aim is to verify if the CZM also works well for large thicknesses. In order to obtain the critical energy release in mode I and II (GIc and GIIc, respectively) the Taperad Double Cantilever Beam (TDCB) and End Notched Flexure (ENF) tests were performed. The comparison between both numerical and experimental simulations were satisfying only to the adhesive thickness of 0,4mm and 0,8mm.
Keywords
Bonded joints, adhesive thickness, Cohesive Zone Model, single lap joint
