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Numerical modelling of non-load bearing light gauge cold-formed steel frame walls under fire conditions

Poologanathan, Keerthan & Mahendran, Mahen (2012) Numerical modelling of non-load bearing light gauge cold-formed steel frame walls under fire conditions. Journal of Fire Sciences, 30(5), pp. 375-403.

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Abstract

Recently an innovative composite panel system was developed, where a thin insulation layer was used externally between two plasterboards to improve the fire performance of light gauge cold-formed steel frame walls. In this research, finite-element thermal models of both the traditional light gauge cold-formed steel frame wall panels with cavity insulation and the new light gauge cold-formed steel frame composite wall panels were developed to simulate their thermal behaviour under standard and realistic fire conditions. Suitable apparent thermal properties of gypsum plasterboard, insulation materials and steel were proposed and used. The developed models were then validated by comparing their results with available fire test results. This article presents the details of the developed finite-element models of small-scale non-load-bearing light gauge cold-formed steel frame wall panels and the results of the thermal analysis. It has been shown that accurate finite-element models can be used to simulate the thermal behaviour of small-scale light gauge cold-formed steel frame walls with varying configurations of insulations and plasterboards. The numerical results show that the use of cavity insulation was detrimental to the fire rating of light gauge cold-formed steel frame walls, while the use of external insulation offered superior thermal protection to them. The effects of real fire conditions are also presented.

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ID Code: 48951
Item Type: Journal Article
Funders: ARC
Keywords: Non-Load Bearing LSF Walls, Finite Element Analysis, Gypsum Plasterboard, Insulation, Cold-formed Steel Studs, Thermal Performance, Standard Fire, Real Fire
DOI: 10.1177/0734904112440688
ISSN: 1530-8049
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Construction Materials (090503)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2012 SAGE Publications
Deposited On: 05 Mar 2012 07:50
Last Modified: 03 Oct 2014 16:31

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