【摘 要】
：
Phononic crystal is a kind of periodic functional materials.The bandgap,a distinguishable feature of these materials which is a frequency range where the pr
【机 构】
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InstituteofEngineeringMechanics,BeijingJiaotongUniversity,Beijing100044,China
【出 处】
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The 5th Asian Conference on Mechanics of Functional Material
论文部分内容阅读
Phononic crystal is a kind of periodic functional materials.The bandgap,a distinguishable feature of these materials which is a frequency range where the propagation of the elastic wave is prohibited has aroused great interest recently.As a result,phononic crystals are beneficial to the advanced applications such as wave filters,sound barriers etc.In this paper,we design a two-dimensional phononic crystal slab with rotational cross-like holes,as shown in Fig.1.It is seen that the rotational cross-like holes result in bending beams.For comparison,we also consider a system with square holes (Fig.2) which has the same porosity as the system in Fig.1.
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