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R.M.F. Paulo¹, P. Carlone², R.A.F. Valente¹, F. Teixeira-Dias³ and G.S. Palazzo²

¹GRIDS Research Group, Department of Mechanical Engineering, University of Aveiro, Portugal
²Department of Industrial Engineering, University of Salerno, Italy
³Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, United Kingdom

doi:10.4203/ccp.105.38

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R.M.F. Paulo, P. Carlone, R.A.F. Valente, F. Teixeira-Dias, G.S. Palazzo, "Buckling Analysis of Aluminium Alloy Structures accounting for Friction Stir Welding Effects", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 38, 2014. doi:10.4203/ccp.105.38

Keywords: stiffened panel, friction stir welding, residual stresses, finite element analysis, buckling, contour method, collapse load, thermal softening, aluminium alloy 2024-T3.

Summary

The joining of aluminium alloy parts using welding techniques can be responsible for changes in the final structures such as geometrical distortions, variation of material properties and residual stresses. These effects can influence the strength of structures and must be taken into account at the design stage. The main objective of the work, described in this paper, is to assess the influence of friction stir welding processes on the load capacity of a stiffened panel subjected to longitudinal compressive loads. A numerical model, based on a finite element approach and simulating the friction stir welding process, is developed in order to evaluate these induced effects on a stiffened panel structure. Afterwards, a compressive load is applied on the structure until the collapse load is reached. The results are compared with those coming from a model not including welding simulation. It is inferred that welding effects (namely, residual stresses and material properties changes) can strongly reduce the collapse load level of the studied structure.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 38 Buckling Analysis of Aluminium Alloy Structures accounting for Friction Stir Welding Effects R.M.F. Paulo¹, P. Carlone², R.A.F. Valente¹, F. Teixeira-Dias³ and G.S. Palazzo² ¹GRIDS Research Group, Department of Mechanical Engineering, University of Aveiro, Portugal ²Department of Industrial Engineering, University of Salerno, Italy ³Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, United Kingdom doi:10.4203/ccp.105.38 purchase the full-text of this paper Full Bibliographic Reference for this paper R.M.F. Paulo, P. Carlone, R.A.F. Valente, F. Teixeira-Dias, G.S. Palazzo, "Buckling Analysis of Aluminium Alloy Structures accounting for Friction Stir Welding Effects", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 38, 2014. doi:10.4203/ccp.105.38 Keywords: stiffened panel, friction stir welding, residual stresses, finite element analysis, buckling, contour method, collapse load, thermal softening, aluminium alloy 2024-T3. Summary The joining of aluminium alloy parts using welding techniques can be responsible for changes in the final structures such as geometrical distortions, variation of material properties and residual stresses. These effects can influence the strength of structures and must be taken into account at the design stage. The main objective of the work, described in this paper, is to assess the influence of friction stir welding processes on the load capacity of a stiffened panel subjected to longitudinal compressive loads. A numerical model, based on a finite element approach and simulating the friction stir welding process, is developed in order to evaluate these induced effects on a stiffened panel structure. Afterwards, a compressive load is applied on the structure until the collapse load is reached. The results are compared with those coming from a model not including welding simulation. It is inferred that welding effects (namely, residual stresses and material properties changes) can strongly reduce the collapse load level of the studied structure. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £45 +P&P)
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