Issue 46

T. Bounini et alii, Frattura ed Integrità Strutturale, 46 (2018) 1-13; DOI: 10.3221/IGF-ESIS.46.01 1 Developments in the fracture and fatigue assessment of materials and structures Simulation of the behavior of aluminum alloys welded in Friction Stir Welding FSW (Case of AA5083 and AA 6082) Bousekrine Taha Bounini, Benattou Bouchouicha University of Sidi Bel Abbes, Algeria Tahabounini@yahoo.fr, benattou_b@yahoo.fr Abdelkader Ghazi University of Mascara, Algeria ghaziaek@yahoo.fr A BSTRACT . The friction stir welding FSW is a topical technique to date, either for experimental or numerical research topics. Based on the fact that the majority of the heat generated, comes from the contact between the workpiece and the shoulder, and from the work of friction done by the pin. Thus, it is crucial to approach the reality, by simulating the most of the conditions, related to the FSW process. The development of a numerical model allows us, not only to simulate the FSW welding process, but also to conduct a parametric study and vary the welding conditions as desired. Therefore, a numerical study is conducted on the friction stir welding of AA 5083H111 work piece, in order to perceive the optimal settings. A three dimensional model designed by ANSYS APDL was used. Before proceeding with this, a preliminary experimental study was carried out on FSW welded AA 6082 –T6 specimens and base material, using tensile and fatigue tests. The numerical results obtained, essentially longitudinal residual stresses, are compared to other studies, experimental and numerical. K EYWORDS . FSW; Parametric Study; AA5083H111; AA 6082-T6; Fatigue test. Citation: Bounini, T., Bouchouicha, B., Ghazi, A., Simulation of the behavior of Aluminium Alloys welded in FSW (Case of AA5083, AA6082), Frattura ed Integrità Strutturale, 46 (2018) 1-13. Received: 28.03.2018 Accepted: 17.07.2018 Published: 01.10.2018 Copyright: © 2018 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION riction stir welding (FSW) is a solid-state welding technique that involves the joining of metals without filler materials. A cylindrical rotating tool plunges into a rigidly clamped workpiece and moves along the joint to be welded. As the tool moves along the joint, heat is generated by friction between the tool shoulder and the workpiece. Additional heat is generated by plastic deformation of the workpiece material. The generated heat results in thermal softening of the workpiece material. The translation of the tool causes the softened workpiece material to flow from the F