Prediction of the flexural behavior of fibre composite sandwich beams
Paper
Paper/Presentation Title | Prediction of the flexural behavior of fibre composite sandwich beams |
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Presentation Type | Paper |
Authors | Manalo, Allan C. (Author), Aravinthan, Thiru (Author) and Karunasena, Karu (Author) |
Editors | Ueda, Tamon |
Journal or Proceedings Title | Proceedings of the 3rd Asia-Pacific Conference on FRP in Structures (APFIS 2012) |
ERA Conference ID | 50255 |
Number of Pages | 8 |
Year | 2012 |
Place of Publication | Hokkaido, Japan |
Web Address (URL) of Paper | http://www.iifc-hq.org/proceedings/APFIS_2012/pdf/F3A01.pdf |
Conference/Event | 3rd Asia-Pacific Conference on FRP in Structures (APFIS 2012) |
Asia-Pacific Conference on FRP in Structures | |
Event Details | 3rd Asia-Pacific Conference on FRP in Structures (APFIS 2012) Event Date 02 to end of 04 Feb 2012 Event Location Sapporo, Japan |
Event Details | Asia-Pacific Conference on FRP in Structures APFIS |
Abstract | One of the core assumptions underlying the construction industry is that the true potential of fibre composite sandwich structures can only be exploited through the use of complex mathematical theories and sophisticated analysis techniques. Research experience at the Centre of Excellence in Engineered Fibre Composites at the University of Southern Queensland has shown that with correct material data, the behaviour of composite sandwich structures can be analysed within acceptable levels of confidence using simple techniques. In this paper, a simplified Fibre Model Analysis (FMA) to describe the approximate behavior and the governing failure mechanisms of composite sandwich structures under flexural load is presented. This fundamental design methodology is based on sectional equilibrium, strain compatibility, and the constitutive material behaviour using a layer-by-layer approach to evaluate the sectional forces and to calculate the nominal flexural capacity of a composite sandwich section. An important advantage of the proposed model is that it can account for the nonlinear behaviour of the core in compression, the effect of core cracking in tension and the linear elastic behaviour of the fibre composite skins. This method also allows analysing composite sandwich structures with non-symmetric section and using only MS Excel spreadsheet program. The efficiency and practical application of this prediction equation is demonstrated by analysing the behavior of individual and glue-laminated composite sandwich beam structures made from the glass fibre composite skins and phenolic core material and comparing with the results of experimental investigation and numerical simulation. This method was found to reasonably describe the behavior of the fibre composite sandwich structures in flexure, therefore suggested as very useful for engineering design and calculations. |
Keywords | sandwich structures; fibre composites; fibre model analysis; design methods; flexure |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
400505. Construction materials | |
401602. Composite and hybrid materials | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1v33/prediction-of-the-flexural-behavior-of-fibre-composite-sandwich-beams
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