典型文献
Tunable low frequency band gaps and sound transmission loss of a lever-type metamaterial plate
文献摘要：
A novel metamaterial plate with subwavelength lever-type resonators is proposed to obtain low frequency broadband band gaps and good sound insulation per-formance.The band structure is theoretically derived,and the validity of the theoretical method is verified by the finite element method.The formation mechanisms of the band gaps are illustrated by the analysis of the effective dynamic mass density and group ve-locity.The effect of the lever ratio on the band gaps is analyzed.The results indicate that as the lever ratio increases,the first band gap shifts to lower frequencies,while the bandwidth is widened.Moreover,the sound insulation performance of the proposed meta-material plate is evaluated via examining the sound transmission loss(STL).Compared with the metamaterial plates without lever accessories,the proposed metamaterial plates with a suitable lever ratio have better sound insulation performance at low frequencies.
文献关键词：
中图分类号：
作者姓名：
Wenzheng QUE;Xiaodong YANG;Wei ZHANG
作者机构：
Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China
文献出处：
引用格式：
[1]Wenzheng QUE;Xiaodong YANG;Wei ZHANG-.Tunable low frequency band gaps and sound transmission loss of a lever-type metamaterial plate)[J].应用数学和力学（英文版）,2022(08):1145-1158
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B类：
Tunable,frequency,gaps,sound,transmission,loss,lever,type,metamaterial,novel,subwavelength,resonators,proposed,obtain,broadband,good,insulation,structure,theoretically,derived,validity,method,verified,by,finite,element,formation,mechanisms,illustrated,analysis,effective,dynamic,mass,density,group,locity,ratio,analyzed,results,indicate,that,increases,first,shifts,lower,frequencies,while,bandwidth,widened,Moreover,performance,evaluated,via,examining,STL,Compared,plates,without,accessories,suitable,have,better
AB值：
0.449297
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