声学超材料的声振耦合数值分析

摘要

Based on definite element software ABAQUS,coupling model of acoustics metamaterial with pe-riodicity is built for the purpose of studying the effect of acoustic vibration coupling on structural displace-ment of acoustics metamaterial.When acoustics metamaterial is under acoustic-vibration recombination,fi-nite element model of acoustics metamaterial is simulated in computer with both acoustic and vibration ac-tion by ABAQUS acoustics finite element method and coupled acoustic-structural analysis.The result shows that structural displacement respond of metamaterial under sound-vibration recombination is bigger than that under single sound or vibration.It gives the rules that acoustic vibration coupling affects metama-terial structural displacement,so that ABAQUS can simultaneously simulate value under acoustic vibration recombination.%为了研究声振耦合对声学超材料结构位移响应的影响,以有限元软件ABAQUS为设计平台,建立具有周期性结构的声学超材料耦合模型.当声学超材料结构经受声-振复合环境激励时,通过ABAQUS声学有限元法和声固耦合算法,对声学超材料的有限元模型在声音、振动共同作用下进行计算机仿真.结果表明:声振复合环境激励下的超材料结构位移响应比声、振单独激励下位移叠加后的结果要大.揭示出声振耦合对超材料结构位移响应的影响规律,实现了ABAQUS软件同时对声振复合环境进行数值模拟.