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Experimental investigation and finite element analysis of welding induced residual stresses

Mollicone, Pierluigi and Gray, Thomas and Camilleri, Duncan (2012) Experimental investigation and finite element analysis of welding induced residual stresses. Journal of Strain Analysis for Engineering Design, 47 (3). pp. 140-152. ISSN 0309-3247

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Abstract

Welding is one of the most important metal joining techniques due to its advantages in relation to speed and versatility. One of the unwanted effects of gas metal arc welding is residual stress, that arises due to the inherent temperature loadings and can lead to structural integrity or assembly problems. Experimental investigation of these effects is highly desirable but often costly, especially in large-scale construction such as shipbuilding. It is therefore of interest to exploit the potential of computational analysis techniques, such as finite element analysis, for the assessment of these effects. The use of finite element analysis in this context is however not straightforward, due to the complex nature of the problem. The work presented here deals with an experimentally validated modelling strategy applied to two weld joint configurations: butt and fillet welded plates. Simulation techniques are presented which are aimed at predicting residual stresses. These are validated against measurements carried out using the hole drilling method for residual stress determination. Results show a good qualitative and quantitative match in simulated and experimentally measured values, which back up the modelling techniques adopted.

Item type: Article
ID code: 40375
Keywords: finite element analysis , welding stresses, residual stress, Mechanical engineering and machinery, Mechanical Engineering, Mechanics of Materials, Computational Mechanics, Metals and Alloys
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
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Depositing user: Pure Administrator
Date Deposited: 09 Jul 2012 12:15
Last modified: 27 Mar 2014 10:16
URI: http://strathprints.strath.ac.uk/id/eprint/40375

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