Investigation of the characteristics of AA6060 alloy under three-point bending using experimental and numerical methodologies

Abstract

In this study, the deformation behavior of 6060 aluminum alloy profile structure under three-point bending load was investigated experimentally and numerically. In this purpose, the use of crash-critical profile structures, which are used to increase safety against collisions, especially in automobiles, are examined. Within the scope of the paper, three-point bending tests were carried out using aluminum 6060 alloy, which has elliptical cross-section geometry with 100 mm and 200 mm span distances and 5 mm punch radius has been obtained experimentally. As a result of the experimental studies, it has been determined that the force required for bending of the material is decreases when the distances beetwen the spans increase. In the second step of the study, finite element analyses were performed using σ-based Hill-48 (S) and r-based Hill-48 (r) plasticity models, and forming force-punch stroke curves and shaped product forms were compared with the experimental results. As a result of the comparisons, it was determined that the forming force-punch storke curves and product forms obtained from finite element analyses were compatible with the experimental results.