Abstract

In this paper, a novel type of cross‐like holes phononic crystal with excellent band gap characteristics, machinability and stability is optimized and designed based on genetic algorithm. The improved genetic algorithm is used to enlarge the band gap in the low frequency range, and the transmission spectrum of the structure is calculated by finite element method. In addition, the magnetorheological elastomer was introduced to optimize the spatial magnetic field distribution and study the influence of magnetic field on the band gap. This work provides useful guidance for the topological design of other types of intelligent phononic crystals.

中文翻译：

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一种新型低频十字孔声子晶体的拓扑设计和磁调谐性

摘要

本文基于遗传算法优化设计了一种具有优异带隙特性、可加工性和稳定性的新型十字孔声子晶体。采用改进的遗传算法在低频范围内扩大带隙，采用有限元法计算结构的透射谱。此外，引入磁流变弹性体优化空间磁场分布，研究磁场对带隙的影响。这项工作为其他类型的智能声子晶体的拓扑设计提供了有益的指导。