فهرست نشریات علمی دسترسی آزاد ایران

In this research, the three-dimensional asymmetric rolling process of metal sheets has been investigated by experimental and finite element simulation methods. Six aluminum sheet samples with a thickness of six millimeters and different widths were subjected to asymmetric rolling tests. The tests were performed using an asymmetric rolling machine with two different roll diameter ratios. The sheet width and its curvature radius at the exit were measured. In order to obtain the true stress-strain curve of aluminum at room temperature, a simple tensile test was performed. The effects of the asymmetry of the process and the percentage of thickness reduction on the sheet width and curvature radius were investigated. Three-dimensional numerical simulation of the process was performed in DEFORM 3D. The sheet width and curvature radius of the sheet were extracted. The data obtained from the experimental method, including the sheet width and radius of curvature of the exit sheet, were compared with the numerical simulation results. Good agreement was observed between the simulation results and the experimental findings. The results showed that by increasing the ratio of the initial width of the sheet to the thickness, the curvature radius remains constant. Also, as the thickness-reduction percentage increases, the curvature radius decreases and the width of the output sheet increases.