Load-Carrying Capacity of Circular Sandwich Plates at Large Deflection
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
The load-carrying capacity of circular sandwich panels under the quasi-static loading applied in the central area is investigated in this paper. The panels consist of two metallic face sheets and a metallic foam core, and they are simply supported or fully clamped at the edges. A velocity field is assumed to estimate the large deflection response, which is defined according to the initial deformation mode of the flat panel and boundary condition. In order to validate the analytical solution a finite-element simulation has been performed. Good agreement confirms that the quasi-static behavior of circular sandwich plates is well captured by the analytical model. A parametric study is then carried out to examine the effect of the boundary condition, face-to-core thickness ratio, and core strength on the structural response. It is shown that membrane effect caused by large deflection has a significant influence on the postyield response, especially in the case of a fully clamped boundary. Using the analytical model, a comparative study is carried out between the sandwich panels and monolithic plates, on their energy-dissipating performance.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 11172196), Shanxi Scholarship Council of China (2013-046), and the Top Young Academic Leaders of Shanxi and the Outstanding Innovative Teams of Higher learning Institutions of Shanxi. The financial contributions are gratefully acknowledged.
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: May 8, 2015
Accepted: Dec 5, 2016
Published online: Apr 17, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 17, 2017
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