A Novel Tensile Testing Method to Characterize the Weld Metal Properties for Laser Welded Blank (LWB) with AHSS 2022-01-0243
The automotive industry applies Laser Welded Blanks (LWB) to increase the material utilization and light-weighting of the vehicle structure. This paper introduces a novel tensile testing method to characterize the hardening behavior of the weld material with a digital image correlation (DIC) and apply it as a constitutive hardening model in forming simulations with the LWBs of GEN3 steel. Formability tests under biaxial conditions were performed with LWB of GEN3 steel. Experimental results were correlated with finite element analysis (FEA) predictions that were conducted with and without the weld material model. The results show the weld material model for the LWB improves the accuracy of FEA predictions of both necking failures on the base metal as well as cracking on the weld.
Citation: Kim, M., Gu, J., and Kim, H., "A Novel Tensile Testing Method to Characterize the Weld Metal Properties for Laser Welded Blank (LWB) with AHSS," SAE Technical Paper 2022-01-0243, 2022, https://doi.org/10.4271/2022-01-0243. Download Citation
Author(s):
Minki Kim, Jiahui Gu, Hyunok Kim
Affiliated:
Korea Institute of Industrial Technology, EWI Forming Center
Pages: 9
Event:
WCX SAE World Congress Experience
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Finite element analysis
Advanced high-strength steels
Tensile strength
Test procedures
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