声学超材料的声振耦合数值分析

Numerical Analysis about Acoustics-metamaterial Acoustic Vibration Coupling Value

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。

Based on definite element software ABAQUS,coupling model of acoustics metamaterial with periodicity is built for the purpose of studying the effect of acoustic vibration coupling on structural displacement of acoustics metamaterial.When acoustics metamaterial is under acoustic-vibration recombination,finite element model of acoustics metamaterial is simulated in computer with both acoustic and vibration action 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 metamaterial structural displacement,so that ABAQUS can simultaneously simulate value under acoustic vibration recombination.