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Investigation of Thickness Distribution Variation in Deep Drawing of Conical Steel Products | ||
| Engineering and Technology Journal | ||
| Article 7, Volume 39, 4A, 2021, Pages 586-598 PDF (1.74 M) | ||
| DOI: 10.30684/etj.v39i4A.1908 | ||
| Authors | ||
| Muhsin J. Jweeg1; Adnan I. mohammed2; Mohammed S. Jabbar* 3 | ||
| 1College of Technical Engineering, Al-Farahidi University, Baghdad, Iraq, [email protected] | ||
| 2Department of Production Engineering and Metallurgy, University of Technology, Baghdad, Iraq, [email protected] | ||
| 3Department of Production Engineering and Metallurgy, University of Technology, Baghdad, Iraq, [email protected] | ||
| Abstract | ||
| This study investigates the thickness variation behavior of deep drawing conical products under the effect of different forming parameters such as die wall inclination angle, punch velocity, sheet thickness, and sheet metal type. Two types of sheet metal were used, low carbon (AISI 1008) and galvanized steel sheets, of 110 mm diameters circular blanks at 0.9 and 1.2mm thickness formed by tooling set (punch, die, and blank holder). The conical dies inclination angles were at 70ᵒ, 72ᵒ, and 74ᵒ where, the punch velocity was 100, 150, and 200 mm/min. Numerical simulation was conducted using ABAQUS 6.14 where a dynamic explicit solver was used to perform forming of conical products. The results show that maximum thinning occurs at punch nose radius region and maximum thickening in sidewall region and thinning are increased with the increasing of die sidewall angle and sheet thickness. In regard to sheet type, the Lankford coefficients r-value shows a great role in thinning behavior with respect to rolling (r-values direction). The results have shown a good agreement between experimental and numerical work with a maximum discrepancy of 5%. | ||
| Keywords | ||
| Thickness distribution; conical products; NUMERICAL SIMULATION; Deep drawing; thinning; steel sheets | ||
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