Open AccessFinite Element Simulation Research on Medium Plate Multi-Pass Welding Temperature Field
Author(s) -
Huawei Liu,
Lin-xin Niu
Publication year - 2015
Publication title -
the open mechanical engineering journal
Language(s) - English
Resource type - Journals
ISSN - 1874-155X
DOI - 10.2174/1874155x01509010786
Subject(s) - welding , finite element method , materials science , heat affected zone , upset welding , arc welding , electric resistance welding , submerged arc welding , temperature gradient , field (mathematics) , metallurgy , electrogas welding , mechanical engineering , gas metal arc welding , structural engineering , engineering , physics , mathematics , quantum mechanics , pure mathematics
V-grooved steel plate 30mm in thickness has been taken into consideration to research on the distribution oftemperature field for the multi-pass welding of steel plate with intermediate thickness in the whole process of welding andcooling. With the establishment of a reasonable three-dimensional solid model, the utility of ANSYS software for finiteelement analysis, the usage of birth-death elements and the setting of normal Gauss heat source, steps have beenundertaken to achieve the goal that the process of multi-pass welding about steel plate in intermediate thickness issimulated and the law of distribution about welding temperature field is obtained. The research results indicate thefollowing: the temperature in every point of base metal changes constantly when the steel plate 30mm in thickness isbeing welded, the heat input position and position behind heat source are the integral parts which have the highesttemperature during the process that welded joints are welded, the temperature gradient in front of welding arc is prettylarge as well as that behind welding arc is relatively small. The calculation results are consistent with actual observationsproviding exactly reliable references for stress field of the welding on steel plates.