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EARING EVOLUTION DURING DRAWING AND IRONING PROCESSES

Barros, P. D.; Alves, J.L.; Oliveira, M. C.; Menezes, L. F.;

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This work presents a study concerning both the deep drawing and ironing processes. The process conditions considered are the ones of the BENCHMARK 1 - Earing Evolution During Drawing and Ironing Processes, proposed under the NUMISHEET 2011 conference. The deep drawing and ironing operations are performed considering two typical body stock materials: AA5042 aluminum alloy and AKDQ steel. The results analyzed are the average cup heights after drawing and ironing processes as well as the required punch load. Two yield criteria were considered: Hill’48[9] and Cazacu and Barlat, 2001[3]. The constitutive parameters for the Hill’48 and the Cazacu and Barlat, 2001 were determined based on the experimental results for tensile tests with different orientations to the rolling direction, disk compression test and the equibiaxial tension test, using DD3MAT in-house code. The numerical simulations of the forming process are performed using DD3IMP in-house code. The blank sheet is discretized using 3D solid elements, allowing the accurate description of the contact conditions during the ironing process. The numerical results are compared with the experimental and numerical ones reported in the NUMISHEET 2011 conference proceedings[7]. Globally, the numerical results show that the earing prediction is sensitive to the blank holder modeling, the yield criterion selected, the work hardening law and the strategy used to identify the materials parameters.

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Palavras-chave: Drawing, Ironing, Yield criterion, DD3IMP.,

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DOI: 10.5151/meceng-wccm2012-19645

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Como citar:

Barros, P. D.; Alves, J.L.; Oliveira, M. C.; Menezes, L. F.; "EARING EVOLUTION DURING DRAWING AND IRONING PROCESSES", p. 3954-3973 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-19645

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