Elastic-Plastic Bending Deformation of Adhesively Bonded Sheet Metals in Tensile Lap Shear Tests with Special Reference to Effect of Tensile Speed

摘要

In order to investigate the effect of tensile shear-induced bending deformation of sheet metals in adhesively bonded single-lap joint on the shear strength of adhesive, in the present work, tensile lap shear experiments on an aluminium sheet joint bonded with the acrylic adhesive were performed at room temperature. Since this type of adhesive has strong rate sensitivity in flow stress, bending deformation becomes larger with increasing tensile speeds. For the prediction of bending deformation, a numerical analysis of elastic-plastic bending deformation of single-lap sheet metals is presented. From the experimental data and the corresponding numerical results, the effect of tensile speed on the bending deformation is discussed. To reduce the bending deformation, a new experimental technique of reinforcement of an adherend sheet with a high-rigidity plate is proposed.