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Vol. 29. Issue 1.
Materiais 2015
Pages e56-e61 (January - April 2017)
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Vol. 29. Issue 1.
Materiais 2015
Pages e56-e61 (January - April 2017)
DOI: 10.1016/j.ctmat.2016.07.015
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Residual stress field and distortions resulting from welding processes: numerical modelling using Sysweld
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Tiago R. Limaa, Sérgio M.O. Tavaresb,
Corresponding author
sergio.tavares@fe.up.pt

Corresponding author.
, Paulo M.S.T. de Castroa
a FEUP, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
b INEGI, Universidade do Porto, Campus FEUP, Rua Dr. Roberto Frias 400, 4200-465 Porto, Portugal
Article information
Abstract

This paper concerns the study of residual stresses and distortions in fusion butt joint welding, using the computational modelling software ESI Sysweld. Thermal gradients across the part will introduce geometrical variations that cause residual stress and distortions; their study and prediction are critical to ensure a sound welding.

To foresee the welding behaviour is a complex task because there are many physical-chemical phenomena involved in the welding processes. Using Sysweld - a finite element method based software - it is possible to integrate all the physical-chemical phenomena and elaborate computational models for most welding cases.

A real case consisting of three sets of aluminium plates welded by laser will be studied in this paper. A finite element model is realized for each case and the results are analysed using Sysweld capabilities.

Keywords:
Finite element method (FEM)
residual stress
distortion
Sysweld
welding simulation
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Copyright © 2017. Portuguese Society of Materials (SPM)
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