基于空心钢管结构的声学超材料  

Acoustic metamaterial based on hollow steel tube structure

作　　者：曾红成 罗春荣[1] 陈怀军[1] 丁昌林[1] 翟世龙[1] 赵晓鹏[1] 

机构地区：[1]西北工业大学智能材料实验室,陕西西安710129

出　　处：《功能材料》2013年第23期3439-3441,3446,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(11174234);西北工业大学2012基础研究基金资助项目(GCKY1014)

摘　　要：提出了一种基于空心钢管(hollow steel tube,HST)的"超原子"结构模型,声学透射实验和数值计算结果表明基于该模型的声学超材料可以实现负等效质量密度。为了说明空心钢管结构性质,研究了空心钢管微结构几何尺寸(例如空心钢管直径)变化时材料的透射性质,结果表明空心钢管几何尺寸的改变对声学超材料的透射禁带频率有影响。A model of ＂meta-atom＂ structure based on hollow steel tube （HST） was presented, which could a chieve the negative effective mass density demonstrated by the acoustic transmission experiments and numerical calculation results. The transmission properties resulted from the change of microstructure geometry of hollow steel tube were studied in order to illustrate the structural properties of the HST. The results showed that the change of the HST geometry affected the transmittance band gap frequency of acoustic metamaterials.

关 键 词：空心钢管 超原子 声学超材料 透射禁带 等效质量密度 

分 类 号：TB381[一般工业技术—材料科学与工程]