A hardness-based model for tailor hardened boron steel is presented that takes into account the softened heat-affected zone of resistance spot welds. The computational model is designed for crashworthiness simulation of fully and partially hardened components obtained by tailored tooling. Five different hardness grades of 22MnB5 are used for model calibration. The proposed model is validated with a specially designed tapered tensile test specimen with hardness transition zone and resistance spot weld in the gauge section.
|Title of host publication||International Conference on Impact Loading of Structures and Materials (ICILSM)|
|Place of Publication||Turin|
|Publication status||Published - 22 May 2016|
Eller, T., Greve, L., Andres, M. T., Medricky, M., Geijselaers, H. J. M., Meinders, V. T., & van den Boogaard, A. H. (2016). The softened heat-affected zone in resistance spot welded tailor hardened boron steel: a material model for crash simulation. In International Conference on Impact Loading of Structures and Materials (ICILSM) (pp. -). Turin.