%0 Journal Article
%T Local resonant acoustic band gaps in two-dimensional square-arranged Helmholtz resonators array<br>二维正方排列圆柱状亥姆赫兹共振腔阵列局域共振声带隙的研究
%A Liu Min
%A Hou Zhi-Lin
%A Fu Xiu-Jun
%A <br>刘敏
%A 侯志林
%A 傅秀军
%J 物理学报
%D 2012
%I 
%X In this paper, by taking the acoustic property of a two-dimensional squarely arranged Helmholtz resonator array for example, we point out that there exist two kinds of couplings in the local resonance phononic crystal, which are the coupling between the resonator and background and the coupling among the resonators, respectively. The first coupling effect can be changed by changing the quality factor of the resonator. A local-resonant type of band gap can be converted into a Bragg-scattering type continually when this kind of coupling becomes larger and larger. The second one, which is based on the overlapping of the near filed around the resonators, can be enhanced by reducing the distance between the nearest resonators. As a result, a wider band gap, but a smaller penetration depth of the wave, can be obtained.
%K local resonance
%K acoustic band gap
%K Helmholtz resonator<br>局域共振
%K 声带隙
%K 亥姆赫兹共振腔
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C47911D886C92F451EC525&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=F3090AE9B60B7ED1&sid=C2849C7D45F2D4D7&eid=C2849C7D45F2D4D7&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=18