Fire structural modelling and testing of welded aluminium plate

Chevali, V. S. and Summers, P. and Cholewa, N. and Afaghi Khatibi, A. and Feih, S. and Lattimer, B. Y. and Case, S. W. and Mouritz, A. P. (2016) Fire structural modelling and testing of welded aluminium plate. Fire and Materials, 40 (1). pp. 48-64. ISSN 0308-0501

Abstract

The structural response of welded aluminium in fire is computationally and experimentally analysed. A finite element (FE) model is developed to compute the deformation and failure of gas metal arc welded (GMAW) aluminium plate under combined loading and one-sided unsteady-state heating representative of fire. The FE model predicts the deformation of the weld, heat-affected zone and parent plate based on the combined effects of elastic softening, plastic softening and creep. The effects of residual stresses in the weld and thermal expansion on the deformation response are also analysed. The numerical accuracy of the model is rigorously evaluated using a large amount of deformation and failure stress data obtained from fire structural tests performed with welded AA5083-AA5083, AA5083-AA6061 and AA6061-AA6061 plates. Good agreement is found between results computed with the FE model and experimental testing. The results reveal that GMAW welds do not reduce the structural performance of aluminium in fire unless the maximum temperature remains below the recrystallisation temperature.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Institute for Agriculture and the Environment
Date Deposited: 24 Aug 2016 23:56
Last Modified: 31 Aug 2016 03:00
Uncontrolled Keywords: aluminium; FE model; welded structures
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090499 Chemical Engineering not elsewhere classified
09 Engineering > 0999 Other Engineering > 099999 Engineering not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1002/fam.2267
URI: http://eprints.usq.edu.au/id/eprint/29624

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