期刊
PHYSICS LETTERS A
卷 376, 期 16, 页码 1384-1390出版社
ELSEVIER
DOI: 10.1016/j.physleta.2012.02.059
关键词
Periodic beams; Plane-wave-expansion method; Complex band structure; Locally resonant
资金
- National Natural Science Foundation of China [51075392, 10902123, 50905182]
The plane wave expansion method is extended to study the flexural wave propagation in locally resonant beams with multiple periodic arrays of attached spring-mass resonators. Complex Bloch wave vectors are calculated to quantify the wave attenuation performance of band gaps. It is shown that a locally resonant beam with multiple arrays of damped resonators can achieve much broader band gaps, at frequencies both below and around the Bragg condition, than a locally resonant beam with only a single array of resonators, although the two systems have the same total resonator masses. (C) 2012 Elsevier B.V. All rights reserved.
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