Journal
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
Volume 48, Issue 5, Pages 936-947Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2008.07.007
Keywords
Welding; Thermal cycle; Convection-diffusiom; Space-time; Finite element method; Eulerian
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Funding
- National Science and Engineering Research Council of Canada (NSERC)
- Material Manufacturing Ontario (MMO)
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Welding plays an important role in manufacturing. But difficulties still exist for simulation of the welding process of large welded structures, due to the limitation of computer capacity, mathematical models and software. This paper is devoted to developing ail algorithm that tries to simulate the thermal cycle during welding efficiently and accurately. A space-time finite element method (FEM) is proposed to solve the transient convection-diffusion thermal equation. The method has been applied to the steady-state thermal analysis of welds. A moving coordinate frame (Eulerian frame), in which the heat Source is stationary, is used to improve the spatial resolution of a numerical analysis for the thermal cycle of welds effectively, as well as to incorporate the addition of the filler metal naturally. This method is suitable for the thermal analysis in the weld pool or/and weld joint region including starting and stopping transients. (C) 2008 Elsevier Masson SAS. All rights reserved.
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