The sound numerical prediction of welding-induced thermal stresses, residual stresses, and distortions strongly depends on the accurate description of a welded material's thermomechanical deformation behaviour. In this work, we provide experimental data on the viscoplastic deformation behaviour of a grade-s960ql steel up to a temperature of . In addition, a multi-phase viscoplastic material model is proposed, which accounts for the experimentally observed isothermal deformation behaviour of grade-s960ql steel base and austenitised material, as well as for athermal contributions that originate from solid-state phase transformations. The multi-phase viscoplastic and a classic rate-independent isotropic hardening material model were applied in the numerical simulations of both-ends-fixed bar Satoh tests and a single-pass gas metal arc weld. The influence of material modelling choices on the agreement between numerical simulation and experimental results is discussed, and recommendations for further work are given.
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Nicolas Häberle 1 ; Andreas Pittner 1 ; Rainer Falkenberg 1 ; Ole Kahlcke 1 ; Michael Rethmeier 1
@article{CRMECA_2018__346_11_1018_0, author = {Nicolas H\"aberle and Andreas Pittner and Rainer Falkenberg and Ole Kahlcke and Michael Rethmeier}, title = {Application of multi-phase viscoplastic material modelling to computational welding mechanics of grade-s960ql steel}, journal = {Comptes Rendus. M\'ecanique}, pages = {1018--1032}, publisher = {Elsevier}, volume = {346}, number = {11}, year = {2018}, doi = {10.1016/j.crme.2018.08.001}, language = {en}, }
TY - JOUR AU - Nicolas Häberle AU - Andreas Pittner AU - Rainer Falkenberg AU - Ole Kahlcke AU - Michael Rethmeier TI - Application of multi-phase viscoplastic material modelling to computational welding mechanics of grade-s960ql steel JO - Comptes Rendus. Mécanique PY - 2018 SP - 1018 EP - 1032 VL - 346 IS - 11 PB - Elsevier DO - 10.1016/j.crme.2018.08.001 LA - en ID - CRMECA_2018__346_11_1018_0 ER -
%0 Journal Article %A Nicolas Häberle %A Andreas Pittner %A Rainer Falkenberg %A Ole Kahlcke %A Michael Rethmeier %T Application of multi-phase viscoplastic material modelling to computational welding mechanics of grade-s960ql steel %J Comptes Rendus. Mécanique %D 2018 %P 1018-1032 %V 346 %N 11 %I Elsevier %R 10.1016/j.crme.2018.08.001 %G en %F CRMECA_2018__346_11_1018_0
Nicolas Häberle; Andreas Pittner; Rainer Falkenberg; Ole Kahlcke; Michael Rethmeier. Application of multi-phase viscoplastic material modelling to computational welding mechanics of grade-s960ql steel. Comptes Rendus. Mécanique, Volume 346 (2018) no. 11, pp. 1018-1032. doi : 10.1016/j.crme.2018.08.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2018.08.001/
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