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Experimental characterisation of multi-sheet, multi-material spot-welded assemblies under pure and combined loading conditions

Abstract : Resistance spot welding (RSW) of multiple sheets (more than two) and combining multiple materials (i.e. different steel grades) are increasingly employed with the growing demand of safety and lightweight vehicle structures. Despite that, the mechanical strength and rupture of such a new generation of RSW under multi-axial loading is not yet sufficiently studied. In this work it is proposed to study the mechanical strength and the failure of multi-sheet multi-steel grade spot-welded assemblies under pure and mixed loading conditions. An advanced experimental device has been developed, based on the Arcan test principle. The experimental study allows to characterize the mechanical strength and to understand failure mechanisms by varying the loading angle α. The effect of the nugget size was also investigated by testing three sets of assemblies with different nugget sizes.
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https://hal-uphf.archives-ouvertes.fr/hal-03442199
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Submitted on : Tuesday, November 23, 2021 - 9:13:54 AM
Last modification on : Wednesday, November 24, 2021 - 3:48:27 AM

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  • HAL Id : hal-03442199, version 1

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Rim Chtourou, Fahmi Chaari, Grégory Haugou, Nicolas Leconte, Eric Markiewicz, et al.. Experimental characterisation of multi-sheet, multi-material spot-welded assemblies under pure and combined loading conditions. 23ème Congrès Français de Mécanique, Aug 2017, Lille, France. ⟨hal-03442199⟩

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