Alternative simulation techniques for distortion of thin plate due to fillet-welded stiffeners

D. Camilleri, P. Mollicone, T.G.F. Gray

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

This study aims to develop and validate a wide-ranging simulation tool to predict welding distortion in stiffened plates and shells, with particular emphasis on out-of-plane deformation. The approach adopted in this study uncouples the thermal, elasto-plastic and structural effects leading to distortion. The computational models and results are supported by realistic welding tests and appropriate measurements to validate the simulated thermal fields and out-of-plane distortions. The simplest and most computationally efficient model makes use of algorithms, instead of numerical computation, to link the thermal welding strains to the elasto-plastic and structural responses of the welded assembly, via a static, single-load-step analysis. Alternative, more computationally intensive models are explored which simulate the full transient thermal and elasto-plastic structural responses in an uncoupled fashion. These provide a cross-reference for the more rudimentary but computationally efficient models. The experiments and computational strategies are applied to welded assemblies incorporating double-fillet-welded stiffeners.
Original languageEnglish
Pages (from-to)1307-1327
Number of pages20
JournalModelling and Simulation in Materials Science and Engineering
Volume14
Issue number8
DOIs
Publication statusPublished - Dec 2006

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Keywords

  • residual-stresses
  • welding distortion
  • inherent strains
  • prediction

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