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Title: | Procedural influences on non-linear distortions in welded thin-plate fabrication |
Authors: | Mollicone, Pierluigi Camilleri, Duncan Gray, Tom |
Keywords: | Electric distortion Welding -- Data processing Fusion zone (Welding) |
Issue Date: | 2008 |
Publisher: | Pergamon Press |
Citation: | Mollicone, P., Camilleri, D., & Gray, T. (2008). Procedural influences on non-linear distortions in welded thin-plate fabrication. Thin-Walled Structures, 46(7-9), 1021-1034. |
Abstract: | Fusion welding is the most common and convenient method used for the fabrication of large, thin-plate welded structures. However, the resulting tendency to out-of-plane distortion exacts severe design and fabrication penalties in terms of poorer buckling performance, lack of fairness in external appearance, poor fit-up and frequent requirements for expensive rework. This study forms part of a long-term project that has the aim of modelling welding and related fabrication processes computationally with particular emphasis on the out-ofplane distortion outcomes. Throughout the present work the computational models have been cross-referenced to realistic experimental test cases. A repeated finding of the trials was that minor variations in fabrication procedures, were found to have significant effects on distortion. In particular, the pre-fabrication procedures, including spot and tack welding, have a significant effect on the initial out-ofplane distortion leading to differences in distortion of the post-welded structures. The support and clamping conditions during welding and cooling of welded thin-plate structures were also found to have a considerable influence on the final predicted out-of-plane distortion. The outcomes often result in different buckling instability behaviour. This paper concentrates on these aspects and draws on studies of buttwelding between plates of thicknesses 3–8 mm. |
URI: | https://www.um.edu.mt/library/oar//handle/123456789/28808 |
Appears in Collections: | Scholarly Works - FacEngME |
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File | Description | Size | Format | |
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Procedural_influences_on_non-linear_distortions_in_welded_thin-plate_fabrication.pdf Restricted Access | 2.27 MB | Adobe PDF | View/Open Request a copy |
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