Abstract
The hydromechanical deep drawing process (HDD) is one of the low-cost forming processes with a high accuracy of the product dimensions compared to the other forming processes. This work aims to investigate the foamability of the low carbon steel (11008-AISI) by using hydromechanical deep drawing for two sheet thicknesses (0.5 and 0.7) mm numerically using the finite element method and experimentally. The final product of the process was a cylindrical cup of (40) mm outer diameter for both sheets. Different forming pressure values (0, 0.8 and 1.5) N/mm2 ware tested to predict the optimum fluid pressures and blank holder forming, (the optimum fluid pressure is 1.5 N/mm2). It was found that the required fluid pressure is increased with increase of sheet thickness, and also that the required press pressure is increased with the increase of sheet thickness. The numerical simulation was successfully achieved the modeling of hydromechanical low carbon steel deep drawing (11008-AISI) with a maximum deviation (7 percent) of compared to the experimental finding in predicting (thickness distribution and strain distribution). Also, it was found the blank holder force values hance a significant effect in a voiding the wrinkling and to avoid the product rupture.
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