Fire structural modelling and testing of welded aluminium plate

Article

Chevali, V. S., Summers, P., Cholewa, N., Khatibi, A. Afaghi, Feih, S., Lattimer, B. Y., Case, S. W. and Mouritz, A. P.. 2016. "Fire structural modelling and testing of welded aluminium plate." Fire and Materials: an international journal. 40 (1), pp. 48-64. https://doi.org/10.1002/fam.2267
Article Title

Fire structural modelling and testing of welded aluminium plate

ERA Journal ID4896
Article CategoryArticle
AuthorsChevali, V. S. (Author), Summers, P. (Author), Cholewa, N. (Author), Khatibi, A. Afaghi (Author), Feih, S. (Author), Lattimer, B. Y. (Author), Case, S. W. (Author) and Mouritz, A. P. (Author)
Journal TitleFire and Materials: an international journal
Journal Citation40 (1), pp. 48-64
Number of Pages17
Year2016
Place of PublicationUnited Kingdom
ISSN0308-0501
1099-1018
Digital Object Identifier (DOI)https://doi.org/10.1002/fam.2267
Web Address (URL)https://onlinelibrary.wiley.com/doi/10.1002/fam.2267
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.

Keywordsaluminium; FE model; welded structures
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400499. Chemical engineering not elsewhere classified
409999. Other engineering not elsewhere classified
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Institution of OriginUniversity of Southern Queensland
Byline AffiliationsCentre of Excellence in Engineered Fibre Composites
Virginia Tech, United States
Royal Melbourne Institute of Technology (RMIT)
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