Experimental and Numerical Study of Hydrodynamic Deep Drawing Process of Rectangular Cups and Blank Shape Optimization

Document Type : Research Article

Authors

Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran

Abstract

Production of rectangular sheet parts by traditional deep drawing methods is associated
with many problems. The absence of axisymmetry and the difference between the length and width of
the part makes the forming of these products difficult. In this paper, forming of rectangular cups in a
single step which is not possible by traditional methods for the desired depth and corner radius, has been
examined by hydrodynamic deep drawing process with radial pressure. In this research, after designing
and manufacturing of die and forming of rectangular parts, the obtained results from simulation were
compared and verified by those of experiments. Moreover, the effect of forming pressure on thickness
distribution has been investigated. The study illustrated that increasing forming pressure up to an optimum
value improves formability and thickness distribution. In addition, in order to remove flange area and to
improve formability, optimization of the sheet dimensions has been performed using sensitivity analysis.
It was concluded that optimizing the blank shape can improve thickness distribution, eliminate final
flange trimming and decrease one stage of manufacturing, resulting in decreasing production time and
cost. Finally, it was illustrated that it is possible to adequately form rectangular cups in one stage using
optimized blanks.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 49, Issue 4
March 2018
Pages 851-862

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