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Mechanical Behavior of Sandwich Panels with Hybrid PU Foam Core
Joint Authors
Zhao, Xudong
Tan, Li
Zhang, Fubin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The traditional composite sandwich structures have disadvantages of low shear modulus and large deformation when used in civil engineering applications.
To overcome these problems, this paper proposed a novel composite sandwich panel with upper and lower GFRP skins and a hybrid polyurethane (PU) foam core (GHP panels).
The hybrid core is composed of different densities (150, 250, and 350 kg/m3) of the foam core which is divided functionally by horizontal GFRP ribs.
The hard core is placed in the compression area to resist compressive strength and improve the stiffness of the composite sandwich structure, while the soft core is placed in the tension area.
Six GHP panels were tested loaded in 4-point bending to study the effect of horizontal ribs and hybrid core configurations on the stiffness, strength, and failure modes of GHP panels.
Experimental results show that compared to the control panel, a maximum of 54.6% and 50% increase in the strength and bending stiffness can be achieved, respectively.
GHP panels with the hybrid PU foam core show obvious secondary stiffness.
Finally, analytical methods were proposed to predict the initial stiffness and peak load of the GHP panels, and the results agree well with experimental results.
American Psychological Association (APA)
Zhao, Xudong& Tan, Li& Zhang, Fubin. 2020. Mechanical Behavior of Sandwich Panels with Hybrid PU Foam Core. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1121213
Modern Language Association (MLA)
Zhao, Xudong…[et al.]. Mechanical Behavior of Sandwich Panels with Hybrid PU Foam Core. Advances in Civil Engineering No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1121213
American Medical Association (AMA)
Zhao, Xudong& Tan, Li& Zhang, Fubin. Mechanical Behavior of Sandwich Panels with Hybrid PU Foam Core. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1121213
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121213