Abstract
In this paper, deep drawing of conical and cylindrical cups without blank holder is investigated using a conical die design. These cups are produced by pushing circular blanks by pushing the flat head punch in a single stroke. ANSYS APDL 14.0 was then used to investigate the effects of die and punch geometry, half-cone angle, die and punch fillet radius, and drawing load. The thickness distribution of the cup was numerically investigated to determine the optimal process design, and mathematical analysis was adopted to determine the thickness distribution and longitudinal stress calculation. An experimental set-up was designed to validate the simulation results for conical and cylindrical shaped sheet-metal cups. Tensile tests were carried out to obtain the flow of the stress-strain curve for the simulation. The drawing characteristics of materials were investigated by performing Erichsen cupping and Vickers hardness tests. Experiments were conducted on blanks of aluminum alloys and stainless steel with initial thicknesses of 1.5 mm. A cylindrical cup of ss304 with LDR of up to 2.2 and conical cup of AA1100 with LDR of up to 2.7 were successfully achieved. Finite element simulation results showed good agreement with the mathematical and experimental results.
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Recommended by Editor Chongdu Cho
Ajay Kumar Choubey is working as a Ph.D. Research Scholar in the Department of Material Science and Metallurgical Engineering at the Maulana Azad National Institute of Technology, Bhopal, India. He completed M.Tech. in Mechanical Engineering from Maulana Azad National Institute of Technology, Bhopal, India (2012). He has approximately 7 years of experience in the area of research, industry, and teaching. He also has more than 25 research publications in national and international journals, book chapters, and proceedings.
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Choubey, A.K., Agnihotri, G. & Sasikumar, C. Experimental and mathematical analysis of simulation results for sheet metal parts in deep drawing. J Mech Sci Technol 31, 4215–4220 (2017). https://doi.org/10.1007/s12206-017-0819-4
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DOI: https://doi.org/10.1007/s12206-017-0819-4