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Characterisation of load-bearing capacity and failure behaviour of different mechanical joints under crash load of steel intensive structures

: Giese, P.; Meschut, G.; Sommer, S.; Rochel, P.

Wieland, H.-J. ; Stahl-Institut VDEh, Düsseldorf:
5th International Conference on Steels in Cars and Trucks, SCT 2017 : Future trends in steel development, processing technologies and applications. Bringing the automotive, supplier and steel industries together; Proceedings; June 18 - 22, 2017 Noordwijkerhout/Amsterdam, The Netherlands
Düsseldorf: Verlag Stahleisen, 2017
ISBN: 978-3-514-00906-6
8 S.
International Conference on Steels in Cars and Trucks (SCT) <5, 2017, Noordwijkerhout>
Bundesministerium für Wirtschaft und Technologie BMWi
IGF; 18289 N
Fraunhofer IWM ()
modelling; simulation; testing; spot weld; soft zone; 22MnB5; hot-stamped steel

The aim of this work is to find a general correlation to describe the reduction in strength of spot welded sheet metals made out of hot-stamped 22MnB5 in relation to the geometrical dimensions of the softened heat affected zone. Tensile tests with spot welded microstructure in the measurement length of the specimen were conducted and used for validation purposes. The resulting analytical model was derived in [1], [2] from a model by Satoh [3] for seam welded plates with a soft interlayer under tensile loading. The derived model was experimentally and numerically validated for different values of the relative thickness of the softened heat affected zone.