Effect of mandrel position in rotary draw tube bending operation

Within the scope of this thesis, the finite element analysis of the bending processes at different mandrel positions was made for tubes in aluminum alloy 6061 W condition, 50.8 mm outer diameter and 0.889 mm wall thickness, and the analysis results were compared with the experimental results. Based on the results obtained, different thinning, ovality, bump, and wrinkle were obtained with the change of mandrel position, which was considered as the only variable. In addition, it was observed that the ovality value increased as the mandrel position was pulled backwards.