ANALYSIS OF THE BENDING PROCESS OF HSLA S700MC AND AHSS S900MC STEELS
DOI:
https://doi.org/10.61164/7da3gw86Keywords:
Aço S700MC, aço S900MC, deformação verdadeira, retorno elástico, simulação computacional.Abstract
HSLA S700MC and AHSS S900MC steels have been increasingly used to substitute conventional steels, and further understanding of mechanical behaviors is needed. This study aims to evaluate mathematical equations for calculating the True Strain in the outer fibers of the bending zone, Springback and Bending Force that occur in the Air Bending process for these two steels, using the analytic methods of calculation and computer simulation, comparing them to the results obtained by means of experimental analysis. Four punches were used, varying the distance between the die supports and the punch displacement for each one of them. Experimental analysis revealed different True Strain values in the outer fibers of the bending zone. However, despite the materials having distinct mechanical properties, the values obtained through analytical calculation methods were found to be the same for both steels. While the predictability of the Springback Factor through the analytical method varied from 0.5% to 6.5% and for Bending Force the variation was from 10.0% to 38.3%.
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References
AERENS, R.; MASSELIS, S. Air bending. Scientific and Technical Research Center of the Metal Fabrication Industry (CRIF/WTCM/SIRRIS) MC 110, Leuven, Belgium, 2000.
AROLA, A-M.; KESTI, V.; RUOPPA, R. The effect of punch radius on the deformation of ultra-high strength steel in bending. Key Eng Mater 639: p. 139-146. 2015.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR ISO 7438: Materiais metálicos - Ensaio de dobramento. Rio de Janeiro, 2022.
DIETER, G. E. Metalurgia Mecânica. 2. ed. Rio de Janeiro: Ganabara Koogan S.A., 1981.
EUROPEAN STANDARD. EN 10149-2/2013: Hot Rolled Flat Products Made of High Yield Strength Steels for Cold Forming – Part 2: Technical Delivery Conditional for Tehrmomechanically Rolled Steels, p. 1-29, 2013.
FARSI, M. A.; AREZOO, B. Bending Force and Spring-Back in V-Die-Bending of Perforated Sheet-Metal Components. Technical Papers • J. Braz. Soc. Mech. Sci. & Eng. 2011.
FU, Z.; MO, J.; CHEN, L.; CHEN, W. Using genetic algorithm-back propagation neural network prediction and finite-element model simulation to optimize the process of multiple-step incremental air-bending forming of sheet metal. Mater Des 31 (1):267-277, 2010.
HOSFORD, W.; CADDELL, R. Metal Forming Mechanics and Metallurgy. 4ª Ed., New York: Cambridge University Press, p. 30-37. 2011.
LANGE, K. Handbook of metal forming. McGraw-Hill Book Company, New York, US, p. 723-755. 1985.
LEDENTSOY, D.; DÜSTER, A.; VOLK, W.; WAGNER, M.; HEINLE, I.; RANK, E. Model adaptivity for industrial application of sheet metal forming simulation. Finite Elem Anal Des 46 (7):585-600, 2010.
LIVATYALI, H.; ALTAN, T. “Prediction and elimination of Springback in straight flanging using computer aided design methods: Part 1”. Experimental Investigations. J. of Mat. Proc. Tech., Vol. 117(1-2), p. 262–268. 2001.
NARAYANASAMY, R.; PADMANABHAN, P. Comparison of regression and artificial neural network model for the prediction of springback during air bending process of interstitial free steel sheet. J Intell Manuf 23 (3), p. 357-364. 2012.
PERKA, A. et al. Advanced High-Strength Steels for Automotive Applicantions: Arc and Laser Welding Process, Properites, and Chalenges, Metals. V. 12, 2022.
ROCHA, R. P.; RIFFEL, M.; MOZETIC, H.; SCHAEFFER, L. Análise do Retorno Elástico no Processo de Dobramento em “V” em Aços de Alta Resistência. Brazilian Journal of Development. v.8, n.4, p. 27662-27677. Abril, 2022.
RODRIGUES, J.; MARTINS, P. Tecnologia Mecânica: Tecnologia da deformação plástica - aplicações industriais. Lisboa: Escolar, p. 265-332, 2010.
SCHAEFFER, L.; NUNES, R. M.; BRITO, A. M. Tecnologia da estampagem de chapas metálicas. 1ª ed. Porto Alegre: Gráfica da UFRGS, p. 56-65. 2017.
SSAB - Swedish Steel AB [homepage on the Internet] 2021. [cited 2023 Dez 18]. Available from: https://www.ssab.com/Products/Brands/Strenx/Products/.
ULSAB. UltraLight Steel Auto Body – Advanced Vehicle Concepts (ULSAB-AVC). [homepage on the Internet] 2017. [cited 2023 Dez 18]: <http://www.worldautosteel.org/projects/ulsab-avc-2/>.
USIMINAS. Usinas Siderurgicas de Minas Gerais. [homepage on the Internet] 2021. [cited 2023 Dez 20]. Available from: https://www.usiminas.com/catalogos/.
VORKOV, V. et al. Experimental Investigation of Large Radius Air Bending. The International Journal of Advanced Manufacturing Technology, V. 92. p. 3553-3569. 2017.
VORKOV, V. et al. Analytical Prediction of Large Radius Bending by Circular Approximation. Journal of Manufacturing Science and Engineering. V. 140, nº. 12. p. 121010-0 a 121010-12. 2018.
YANG, X. et al. Investigating springback in bending of advanced high-strength steel, Part II Springback prediction. STAMPING J January/February:8-9, 2011.
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Copyright (c) 2026 Valtenês de Souza Bossle, Lirio Schaeffer, Matheus Henrique Riffel , Rafael Pandolfo da Rocha, Juliano Cantarelli Toniolo
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