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首页> 外文期刊>The journal of physics and chemistry of solids >Opening complete band gaps in two dimensional locally resonant phononic crystals
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Opening complete band gaps in two dimensional locally resonant phononic crystals

机译：在二维局部共振声子晶体中打开完整带空隙

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摘要

Locally resonant phononic crystals (LRPCs) which have low frequency band gaps attract a growing attention in both scientific and engineering field recently. Wide complete locally resonant band gaps are the goal for researchers. In this paper, complete band gaps are achieved by carefully designing the geometrical properties of the inclusions in two dimensional LRPCs. The band structures and mechanisms of different types of models are investigated by the finite element method. The translational vibration patterns in both the in-plane and out-of plane directions contribute to the full band gaps. The frequency response of the finite periodic structures demonstrate the attenuation effects in the complete band gaps. Moreover, it is found that the complete band gaps can be further widened and lowered by increasing the height of the inclusions. The tunable properties by changing the geometrical parameters provide a good way to open wide locally resonant band gaps.
机译：具有低频带隙的局部共振声子晶体（LRPC）最近在科学和工程领域中引起了不断增长的关注。 宽阔的本地谐振频段间隙是研究人员的目标。 在本文中，通过仔细设计二维LRPC的夹杂物的几何特性来实现完整带隙。 通过有限元法研究了不同类型模型的带结构和机制。 平面内和外平面方向上的平移振动模式有助于满带间隙。 有限周期结构的频率响应展示了完整带间隙中的衰减效应。 此外，发现通过增加夹杂物的高度，可以进一步加宽并降低完整带隙。 通过更改几何参数来调节属性提供了打开宽局部谐振带间隙的好方法。

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