Abstract
“Hot stamped boron steel” 22MnB5 has been imperative in meeting the automotive industry’s demand for materials exhibiting higher tensile strength in the final component. In this paper, the crash performance of three experimental grades developed for automotive hot stamping technologies, exhibiting wider tensile property ranges than 22MnB5, was validated by finite element modelling full vehicle side impact with the experimental material data applied to the B-pillar reinforcement. The superior anti-intrusive crash performance of grade 38MnB5 was demonstrated, with 11 mm less intrusion of the B-pillar reinforcement compared to 22MnB5. Moreover, the superior “impact-energy absorptive” crash performance of grade 15MnCr5 was demonstrated, with 0.15 kJ greater impact-energy absorption by the B-pillar reinforcement compared to 22MnB5.
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Acknowledgments
The authors would like to acknowledge Mr. P. Evans of Tata Steel Strip Products UK for his technical input to the reported research.
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Taylor, T., Fourlaris, G. & Cafolla, J. Finite Element Modelling Full Vehicle Side Impact with Ultrahigh Strength Hot Stamped Steels. J. of Materi Eng and Perform 25, 4495–4505 (2016). https://doi.org/10.1007/s11665-016-2285-z
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DOI: https://doi.org/10.1007/s11665-016-2285-z