期刊
JOURNAL OF VIBRATION AND CONTROL
卷 22, 期 7, 页码 1777-1789出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546314544694
关键词
Band gaps; flexural wave; phononic crystals; piezoelectric thin circular plate; transfer matrix method
资金
- National Natural Science Foundation of China [51375105]
- Natural Science Foundation of Heilongjiang Province of China [E201418]
- Fundamental Research Funds for the Central Universities of the Ministry of Education of China [HEUCF130705]
- China Postdoctoral Science Foundation [2012M520705]
Piezoelectric thin rings are periodically introduced and placed on a base plate along the radial direction, forming a one-dimensional thin circular plate of piezoelectric radial phononic crystals (CPPRPC). Based on flexural wave equation of thin circular plate and the transfer matrix method, the behavior of flexural waves propagating in CPPRPC is analyzed theoretically and numerically, especially in the band gaps. The transmission curves of CPPRPC and homogeneous-material plate are calculated for comparison. Afterwards finite element simulations are carried out to verify the theoretical results. Furthermore, the effects of the length ratio, thickness ratio, period number and control gain on the flexural wave band gap are discussed in detail. Our results show that there are band gaps of flexural wave in CPPRPC. Structural parameters and outer active control gain have important influences on the band gaps. In particular, low and broad band gaps can be obtained effectively by varying outer active control gain.
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