Forming Of Spherical Titanium Cups From Circular Blanks With Cutouts On The Perimeter

Despite substantial demand for drawn parts made of high-strength sheet metal (including titanium alloys) observed in the modern industry, particularly automotive and aviation, their application remains insignificant. This results from the fact that such sheet metal shows poor plasticity and its cold...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2015-06, Vol.60 (2), p.829-834
Main Authors: Lacki, P., Adamus, J., Więckowski, W., Winowiecka, J.
Format: Article
Language:English
Subjects:
FEM modelling
sheet-metal forming
titanium sheet
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Summary:Despite substantial demand for drawn parts made of high-strength sheet metal (including titanium alloys) observed in the modern industry, particularly automotive and aviation, their application remains insignificant. This results from the fact that such sheet metal shows poor plasticity and its cold-forming is almost impossible. Low drawability makes it impossible to obtain even such simple shapes as spherical cups. The authors of this study developed circular sheet-metal blanks with cutouts on their perimeter. The blanks allow for cold forming of spherical cups from Ti6Al4V titanium alloy sheet metal using conventional rigid tools. The cutouts proposed in the study affect plastic strain distribution, which in turn leads to an increase in forming depth by about 30%. The numerical analysis, performed using the PamStamp 2G System software based on finite element method, was verified experimentally.
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.1515/amm-2015-0214