The study of forming of steel cups using hydrodynamic deep drawing process

Document Type : Original Article

Authors

1 Mechanical Engineering Department, Sirjan University of Technology, Sirjan, Iran

2 Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran

3 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

Abstract

Thickness distribution is one of the important parameters in the sheet metal forming processes. This paper investigates the forming of flat cylindrical cups made of steel using the hydrodynamic deep drawing process via experiment and simulation. At first, the process was simulated using the ABAQUS finite element software. Afterward, the results of the finite element simulation are compared with results of the experiments. Comparing the results showed that the thickness distribution and punch force have an acceptable agreement in the experiment and numerical methods. Then, using the validated finite element model, the effect of the process parameters including the friction coefficient between the punch and the sheet, the friction coefficient between the blank holder and the sheet, the corner radius of the punch and the die, as well as the gap between the blank holder and the die on the maximum thinning of the steel cups have been investigated. Finally, the obtained results revealed that the corner radius zone of the punch is the critical forming zone since the maximum thinning occurs in this region. Also, by increasing the friction coefficient between the sheet and the punch, the maximum thinning decreases by 10% at the corner radius zone of the punch. In addition, by increasing the friction coefficient between the sheet and the blank holder, the maximum thinning increases by 20%. Likewise, by increasing the corner radius of the punch and the die, the maximum thinning decreases by 25%, and also, by increasing the gap between the die and the blank holder, the maximum thinning decreases by 10%.

Keywords

References

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Iranian Journal of Manufacturing Engineering
Volume 9, Issue 8
October 2022
Pages 56-64

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