CAJ | 학술논문

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。
제출료일충기우공심강관(hollow steel tube,HST)적“초원자”결구모형,성학투사실험화수치계산결과표명기우해모형적성학초재료가이실현부등효질량밀도。위료설명공심강관결구성질,연구료공심강관미결구궤하척촌(례여공심강관직경)변화시재료적투사성질,결과표명공심강관궤하척촌적개변대성학초재료적투사금대빈솔유영향。
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.