Influence of the sheet thickness variability on the deep drawing of a cylindrical cup

Influence of the sheet thickness variability on the deep drawing of a cylindrical cup


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Abstract. Sheet metal forming processes are widely used in industry. The quality of formed parts can be significantly affected by various sources of uncertainty inevitably associated with the forming process. The objective of this work is to quantify the influence of thickness variability on the forming process of a cylindrical cup. Using numerical simulation, the influence of the sheet thickness variance on the evolution of the punch force versus displacement, the equivalent plastic strain distribution, the earing profile and the thickness around the cup is studied for a given cup height. Four thickness distributions with different variance values and the same average thickness value were studied. It was concluded that an increase in variance leads to an increase in thickness dispersion (at the base and curvature of the cup) and an increase in equivalent strain dispersion along the cup. The earing profile of the cup is also affected by the thickness variability, but to a lesser extent. On the other hand, the development of the punch force is not affected by the thickness variability.

Thickness Variability, Cylindrical Cup, Uncertainty

Published online 4/24/2024, 9 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: PEREIRA André, PRATES Pedro, PARREIRA Tomás, OLIVEIRA Marta, Influence of the sheet thickness variability on the deep drawing of a cylindrical cup, Materials Research Proceedings, Vol. 41, pp 1827-1835, 2024


The article was published as article 202 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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