Behaviour of composite sandwich beams with different shear span-to-depth ratios
Paper
Paper/Presentation Title | Behaviour of composite sandwich beams with different shear span-to-depth ratios |
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Presentation Type | Paper |
Authors | Ferdous, Wahid (Author), Manalo, Allan (Author) and Aravinthan, Thiru (Author) |
Editors | Hao, Hong and Zhang, Chunwei |
Journal or Proceedings Title | Mechanics of Structures and Materials: Advancements and Challenges |
Number of Pages | 6 |
Year | 2017 |
Place of Publication | London, United Kingdom |
ISBN | 9781138029934 |
9781351850216 | |
Digital Object Identifier (DOI) | https://doi.org/10.1201/9781315226460-34 |
Web Address (URL) of Paper | http://www.crcnetbase.com/doi/abs/10.1201/9781315226460-34 |
Conference/Event | 24th Australasian Conference on the Mechanics of Structures and Materials (ACMSM24) |
Event Details | Rank B B B B B B B B B B B B B B B B B B B B |
Event Details | 24th Australasian Conference on the Mechanics of Structures and Materials (ACMSM24) Parent Australasian Conference on the Mechanics of Structures and Materials Delivery In person Event Date 06 to end of 09 Dec 2016 Event Location Perth, Australia |
Abstract | A novel composite sandwich beam made up of glass fibre reinforced polymer (GFRP) skins and phenolic core material has been developed for use in civil infrastructure applications. To understand the shear and flexural behaviour of the sandwich systems, static bending test was conducted using beams in different orientations and with varying shear span-to-depth (a/D) ratios. The beams were cut into 20 mm × 40 mm cross section and tested in both flatwise (GFRP skin in horizontal plane) and edgewise (GFRP skin in vertical plane) orientation with a/D ratios of 2, 4 and 6. The results showed that the a/D ratio has a significant influence on the develop-ment of bending and shear stresses affecting the mode of failure. In flatwise position, the observed failure modes were (a) core shear (a/D = 2), (b) core shear followed by de-bonding between core and skin (a/D = 4), and (c) skin compression followed by de-bonding between core and skin (a/D = 6). In edgewise orientation, the failure was governed by (a) skin shear (a/D = 2), and (b) core tension followed by skin shear and skin compression (a/D at 4), and (c) core tension followed by skin compression and buckling. The beams at edge-wise orientation can provide 1.94 times higher bending stiffness and better ductile properties than the flatwise orientation with the same beam dimensions. The increase of shear span-to-depth ratio from 2 to 6 decrease the load carrying capacity of the beam and gradually changes the beam behaviour from shear to flexural dominance. |
Keywords | composite sandwich beams |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Future Materials |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3xvq/behaviour-of-composite-sandwich-beams-with-different-shear-span-to-depth-ratios
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