Probability analysis of the fire structural resistance of aluminium plate
Article
Article Title | Probability analysis of the fire structural resistance of aluminium plate |
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ERA Journal ID | 4897 |
Article Category | Article |
Authors | Khatibi, A. Afaghi (Author), Chevali, V. (Author), Feih, S. (Author) and Mouritz, A. P. (Author) |
Journal Title | Fire Safety Journal |
Journal Citation | 83, pp. 15-24 |
Number of Pages | 10 |
Year | 2016 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0379-7112 |
1873-7226 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.firesaf.2016.04.004 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0379711216300546 |
Abstract | An experimental and numerical study into the intrinsic scatter in the fire structural resistance of aluminium plate supporting tension loads is presented. Small-scale simulated fire structural tests performed on two aluminium alloys (AA5083 and AA6061) show for the first time a large amount of scatter in the tensile deformation rate and rupture stress. Multiple simulated fire tests conducted under identical heat flux exposure and tensile load conditions reveal scatter in the softening behaviour of the two aluminium alloys; there is large variability in the deformation rate, rupture stress and time-to-rupture, particularly at low stresses when creep dominates the softening process. Finite element analysis (incorporating elastic, plastic and creep softening effects) and elevated temperature material testing reveals that the scatter is caused mainly by variability in creep properties such as creep activation energy. A probability density function is used to quantify the scatter in the creep activation energy, and the finite element model using Monte Carlo simulations computes the scatter in the fire structural resistance of aluminium, which is not possible with existing deterministic models. |
Keywords | Fire; Structures; Aluminium; Failure; Model |
ANZSRC Field of Research 2020 | 400499. Chemical engineering not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Royal Melbourne Institute of Technology (RMIT) |
Centre of Excellence in Engineered Fibre Composites | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q38y3/probability-analysis-of-the-fire-structural-resistance-of-aluminium-plate
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