Flexural Wrinkling Strength of Lightly Profiled Sandwich Panels with Transverse Joints in the Foam Core

Mahendran, Mahen & McAndrew, Duncan C. (2003) Flexural Wrinkling Strength of Lightly Profiled Sandwich Panels with Transverse Joints in the Foam Core. Advances in Structural Engineering, 6(4), pp. 325-337.


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In Australia, sandwich panels are commonly made of flat or lightly profiled steel faces and expanded polystyrene foam cores, and are increasingly used as roof and wall claddings in industrial and commercial buildings. Flexural wrinkling is often the governing criterion in the design of these panels. The use of lightly profiled faces is expected to increase the flexural wrinkling stress considerably whereas the presence of joints between the polystyrene foam slabs in the transverse direction introduces a reduction to the flexural wrinkling stress. Therefore a series of full scale experiments and finite element analyses were conducted to evaluate the effects of lightly profiled faces and transverse joints on the flexural wrinkling stress of panels subjected to a lateral pressure loading. The results showed that properly designed lightly profiled panels provided considerable improvement to flexural wrinkling strength over flat panels whereas the presence of transverse joints caused a significant reduction to wrinkling strength. This paper presents the details of this investigation, the results and comparison with available theoretical and design solutions.

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ID Code: 7619
Item Type: Journal Article
Refereed: Yes
Keywords: Lightly profiled sandwich panels, Flexural wrinkling, Transverse foam joints, Experiments, Finite element analyses
DOI: 10.1260/136943303322771709
ISSN: 1369-4332
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2003 Multi-Science Publishing
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 14 May 2007 00:00
Last Modified: 29 Feb 2012 13:01

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