Investigations of strain rate sensitivity under different stress triaxialities for DC04

–

Investigations of strain rate sensitivity under different stress triaxialities for DC04

MAIER Lorenz, MARKER Edgar, SCHULZ Fabian, VOLK Wolfram

Abstract. Understanding the strain rate sensitivity of materials is essential for predicting their behavior in sheet metal forming. While uniaxial tension tests are state of the art in characterizing this sensitivity, the deformation response of materials under different loading conditions can significantly deviate from uniaxial behavior. This paper presents a comprehensive study of the strain rate sensitivity of DC04 through a series of experimental investigations with different strain rates. In addition to uniaxial tension tests, the study investigates the strain rate sensitivity under shear and plane strain tests, providing a comprehensive analysis of strain rate sensitivity across different loading scenarios. The investigation aims to understand how the material responds to varying deformation rates, focusing on characterizing their deformation behavior under various loading conditions. The authors collected experimental data from the material with a DIC system. They analyzed it to derive material-specific parameters that describe their strain rate-dependent responses depending on the stress state. To explain this, the authors calibrated three models: Johnson Cook, Cowper Symonds, and Huh Kang.

Keywords
Strain Rate Sensitivity, Sheet Metal Forming, Deep Drawing, Stress Triaxiality

Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: MAIER Lorenz, MARKER Edgar, SCHULZ Fabian, VOLK Wolfram, Investigations of strain rate sensitivity under different stress triaxialities for DC04, Materials Research Proceedings, Vol. 41, pp 2124-2133, 2024

DOI: https://doi.org/10.21741/9781644903131-234

The article was published as article 234 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.

References
[1] E. Vallaster, S. Wiesenmayer, M. Merklein, “Effect of a strain rate dependent material modeling of a steel on the prediction accuracy of a numerical deep drawing process,” Prod. Eng. Res. Devel., 2023. https://doi.org/10.1007/s11740-023-01222-6
[2] F. Khameneh, A. Abedini, C. Butcher, “Experimental and Numerical Fracture Characterization of DP1180 Steel in Combined Simple Shear and Uniaxial Tension,” Metals, 7 (2023) 1305. https://doi.org/10.3390/met13071305
[3] D. Anderson, S. Winkler, A. Bardelcik, M. J. Worswick, “Influence of stress triaxiality and strain rate on the failure behavior of a dual-phase DP780 steel,” Materials & Design, 60 (2014) 198–207. https://doi.org/10.1016/j.matdes.2014.03.073
[4] L. Maier, M. Eder, R. Norz, W. Volk, “Innovative experimental setup for the investigation of material models with regard to strain hardening behavior,” IOP Conf. Ser.: Mater. Sci. Eng., 1284, (2023) 12071. https://doi.org/10.1088/1757-899X/1284/1/012071
[5] C. C. Roth, D. Mohr, “Effect of strain rate on ductile fracture initiation in advanced high strength steel sheets: Experiments and modeling,” International Journal of Plasticity, 56 (2014) 19–44. https://doi.org/10.1016/j.ijplas.2014.01.003
[6] M. F. Shi, D. J. Meuleman, “On certain aspects of strain rate sensitivity of sheet metals,” JMEP, 4 (1995) 321–333. https://doi.org/10.1007/BF02649070
[7] D. Jocham, R. Norz, W. Volk, “Strain rate sensitivity of DC06 for high strains under biaxial stress in hydraulic bulge test and under uniaxial stress in tensile test,” Int J Mater Form, 10 (2017) 453–461. https://doi.org/10.1007/s12289-016-1293-8
[8] C. C. Roth, D. Mohr, “Ductile fracture experiments with locally proportional loading histories,” International Journal of Plasticity, 79 (2016) 328–354. https://doi.org/10.1016/j.ijplas.2015.08.004
[9] Y. Wang, X. Zeng, H. Chen, X. Yang, F. Wang, L. Zeng, “Modified Johnson-Cook constitutive model of metallic materials under a wide range of temperatures and strain rates,” Results in Physics, 27 (2021) 104498. https://doi.org/10.1016/j.rinp.2021.104498
[10] P. Verleysen, J. Peirs, J. van Slycken, K. Faes, L. Duchene, “Effect of strain rate on the forming behaviour of sheet metals,” Journal of Materials Processing Technology, 211 (2011) 1457–1464. https://doi.org/10.1016/j.jmatprotec.2011.03.018
[11] Y. Lou, S. Zhang, J. W. Yoon, “Strength modeling of sheet metals from shear to plane strain tension,” International Journal of Plasticity, 134 (2020) 102813. https://doi.org/10.1016/j.ijplas.2020.102813
[12] A. Škrlec, J. Klemenc, “Estimating the Strain-Rate-Dependent Parameters of the Cowper-Symonds and Johnson-Cook Material Models using Taguchi Arrays,” SV-JME, 62 (2016) 220–230. https://doi.org/10.5545/sv-jme.2015.3266
[13] H. Huh, W. J. Kang, S. S. Han, “A tension split Hopkinson bar for investigating the dynamic behavior of sheet metals,” Experimental Mechanics, 42 (2002) 8–17. https://doi.org/10.1007/BF02411046
[14] Testing of metallic materials: Tensile test pieces, 50125:2022-08, German institute for standardization.