Flexural vibration band gaps in thin plates with two-dimensional binary locally resonant structures |
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Authors: | Yu Dian-Long Wang Gang Liu Yao-Zong Wen Ji-Hong and Qiu Jing |
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Institution: | Institute of Mechatronical Engineering, National University of Defense Technology, Changsha 410073, China;PBG Research Center, National University of Defense Technology,Changsha 410073, China |
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Abstract: | The complete flexural vibration band gaps are studied in the thin plates
with two-dimensional binary locally resonant structures, i.e. the composite
plate consisting of soft rubber cylindrical inclusions periodically placed
in a host material. Numerical simulations show that the low-frequency gaps
of flexural wave exist in the thin plates. The width of the first gap
decreases monotonically as the matrix density increases. The frequency
response of the finite periodic thin plates is simulated by the finite
element method, which provides attenuations of over 20dB in the frequency
range of the band gaps. The findings will be significant in the application
of phononic crystals. |
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Keywords: | phononic crystals flexural vibration band gaps locally resonant |
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