Journal
COMPUTERS & STRUCTURES
Volume 127, Issue -, Pages 88-101Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2013.01.011
Keywords
Plate theory; Higher-order models; Homogenization; Periodic plates; Space frame
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The Bending-Gradient theory for thick plates is the extension to heterogeneous plates of Reissner-Mindlin theory originally designed for homogeneous plates. In this paper the Bending-Gradient theory is extended to in-plane periodic structures made of connected beams (space frames) which can be considered macroscopically as a plate. Its application to a square beam lattice reveals that classical Reissner-Mindlin theory cannot properly model such microstructures. Comparisons with exact solutions show that only the Bending-Gradient theory captures second order effects in both deflection and local stress fields. (C) 2012 Civil-Comp Ltd and Elsevier Ltd. All rights reserved.
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