Numerical modelling techniques applicable for the prediction of residual stresses and distortion due to mild steel DH36 frictions stir welding

Duncan Camilleri, Daniel Micallef, Larbi Arbaoui, Athanasios Toumpis, Alexander Galloway

Research output: Contribution to conferencePaper

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Abstract

Friction stir welding involves a multi-physics phenomena, including visco-plasticity, material flow, metallurgical transformation, heat generation, thermal straining and structural interaction. Numerical modelling provides an efficient and cost effective tool capable to analysis and predict the different phenomena. This study integrates different numerical modelling strategies to ultimately develop a robust yet computationally efficient modelling technique capable of predicting residual stresses and distortion due to FSW. A computational efficient local-global numerical model capable of predicting the material visco-plastic flow, thermal transients, stir/heat affected zone, residual stresses and distortion developed due to friction stir welding of DH36 plates is described. Different thermo-elasto-plastic modelling strategies ranging from analytical to transient numerical models are explored and the most robust and computational efficient strategy is identified through cross-reference with the realistic experimental test results.
Original languageEnglish
Number of pages4
Publication statusPublished - 1 Oct 2015
Event4th International Conference on Friction Stir Welding, FSWP2015 - Donostia-San Sebastian, Spain
Duration: 1 Oct 20152 Oct 2015

Conference

Conference4th International Conference on Friction Stir Welding, FSWP2015
CountrySpain
CityDonostia-San Sebastian
Period1/10/152/10/15

Keywords

  • numerical models
  • residual stresses
  • out-of-plane distortion
  • friction stir welding (FSW)

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    Camilleri, D., Micallef, D., Arbaoui, L., Toumpis, A., & Galloway, A. (2015). Numerical modelling techniques applicable for the prediction of residual stresses and distortion due to mild steel DH36 frictions stir welding. Paper presented at 4th International Conference on Friction Stir Welding, FSWP2015, Donostia-San Sebastian, Spain.