期刊
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
卷 123, 期 -, 页码 140-150出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2017.09.012
关键词
Beam welding; Heat flux model; Heat transfer; Orthogonal geometry; Square-butt weld; Thermal analysis
资金
- Engineering and Physical Sciences Research Council (EPSRC) through the NNUMAN programme [EP/J021172/1]
- Engineering and Physical Sciences Research Council [1261082, EP/J021172/1] Funding Source: researchfish
- EPSRC [EP/J021172/1] Funding Source: UKRI
A semi-analytical solution has been derived for the transient temperature fields that are generated in a three-dimensional solid body when it is subjected to one or more moving heat sources. The solution was derived using the Green's function method, and is applicable to any orthogonal domain that is subject to arbitrary boundary conditions. The solution can account for any linear combination of double-ellipsoidal or double-ellipsoidal-conical (DEC) heat sources. It can therefore be applied in situations ranging from an electric arc moving across a flat plate, to partial-penetration or full-penetration welding either with a laser or an electron beam. In this work, full penetration electron beam welds in 30 mm and 130 mm thick sections of SA508 steel were used as experimental test cases. The solution was shown to offer improved accuracy and dramatic reductions in solution times when compared with numerical methods, thereby lending itself to real-time in process monitoring of fusion welding processes. (C) 2017 The Authors. Published by Elsevier Masson SAS.
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