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Wolverhampton Intellectual Repository and E-Theses > School of Technology > School of Engineering and the Built Environment > Engineering and Technology > Finite Element Modelling of Multipass Fusion Welding with Application to Complex Geometries

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/29647
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Title: Finite Element Modelling of Multipass Fusion Welding with Application to Complex Geometries
Authors: Jiang, Wei
Yahiaoui, Kadda
Citation: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 221(4): 225-234
Publisher: Professional Engineering Publishing
Journal: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
Issue Date: 2007
URI: http://hdl.handle.net/2436/29647
DOI: 10.1243/14644207JMDA151
Additional Links: http://journals.pepublishing.com/content/am8088457p275052/
Abstract: The current paper presents recently completed work in the development of advanced multi-pass weld modelling procedures, with the ultimate objective of predicting weld residual stress distributions in thick-walled complex geometries. The modelling technique was first developed using simple three-dimensional geometries, for which experimental data was available for validation purposes. All the non-linearities associated with welding, including geometry, material, and boundary non-linearities, as well as heat source movement were taken into account. The element removal/reactivate technique was employed to simulate the deposition of filler material. Combined with a newly developed meshing technique, the model was then applied to predict residual stress distributions for a relatively thick stainless steel piping branch junction. Finally, a parametric study was conducted to assess the effects of various manufacture-related welding parameters on the final residual stress fields. The interpass temperature and cooling rate were found to be the two most sensitive parameters affecting resultant residual stresses. The residual stress profiles can be optimized relatively easily by adjusting these parameters. This research demonstrated that the developed modelling technique has potential in multi-pass welding process optimization and wide industrial applications including weld repairs.(Professional Engineering Publishing)
Type: Article
Language: en
Description: The Journal’s editorial board deemed it timely to dedicate an issue to address recent developments in the field and to highlight challenges to industry to exploit state-of-the-art modelling techniques. This paper was included in the special issue and describes the application of commercial finite element software to model the multipass fusion welding process.
Keywords: Multipass welding
Welding process
Modelling
Residual stress
Finite element analysis
Piping components
Engineering technology
Product design
Metal components
ISSN: 14644207
Appears in Collections: Engineering and Technology

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