期刊
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
卷 123, 期 -, 页码 292-304出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmps.2018.08.024
关键词
Periodic lattices; Bandgaps; High-contrast homogenization
We consider elastic waves in a two-dimensional periodic lattice network of Timoshenko-type beams. We show that for general configurations involving certain highly-contrasting components a high-contrast modification of the homogenization theory is capable of accounting for bandgaps, explicitly relating those to low resonant frequencies of the soft components. An explicit example of a square-periodic network of beams with a single isolated resonant beam within a periodicity cell is considered in detail. (C) 2018 Elsevier Ltd. All rights reserved.
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