Experimental investigation and finite element analysis of welding induced residual stresses

Pierluigi Mollicone, Thomas Gray, Duncan Camilleri

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)140-152
Number of pages14
JournalJournal of Strain Analysis for Engineering Design
Volume47
Issue number3
DOIs
Publication statusPublished - Apr 2012

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Keywords

  • finite element analysis
  • welding stresses
  • residual stress

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