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A hierarchical multiscale finite element approach for modelling the heat affected zone of welded joints
Author(s) -
Wudtke Idna,
Silani Mohammad,
Kraus Matthias
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710280
Subject(s) - homogenization (climate) , finite element method , welding , materials science , structural engineering , stress–strain curve , boundary value problem , mechanics , composite material , mathematics , engineering , mathematical analysis , physics , biodiversity , ecology , biology
In the present work a hierarchical multiscale approach, based on finite element method, is applied in order to characterize the heat affected zone (HAZ) of a welded joint with parent material S460M. The metallurgical constituents of particular regions of the HAZ was determined experimentally and, regarding the multiscale approach, a first‐order computational homogenization method was implemented. In this context, effective stress‐strain‐relations in particular spots of the HAZ are determined applying prescribed displacement boundary conditions. The obtained relations were considered in subsequent finite element calculations of butt‐welded joints under tensile loading, allowing a comparison of the numerical strain states to experimental results. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)