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Three-Phase Microstructure Topology Optimization of Two-Dimensional Phononic Bandgap Materials Using Genetic Algorithms

查看参考文献38篇

文摘 The bandgap, an important characteristic of the periodic structure, is dispersionrelated, which can be designed by tailoring the layout of materials within the periodic microstructures. A typical example of a periodic structure is phononic crystals(PnCs), which are traditionally fabricated from two-phase materials. Herein, we investigate the topologies of periodic three-phase PnCs. The microstructures of the three-phase PnCs are optimized using a two-stage genetic algorithm, and three case studies are proposed to obtain the following:(1) the maximum relative bandgap width,(2) the maximum absolute bandgap width, and(3) the maximum bandgap at a specified frequency. More importantly, the three-phase material provides significant advantages compared to the typical two-phase materials, such as a low-frequency bandgap. This research is expected to contribute highly to vibration and noise isolation, elastic wave filters, and acoustic devices.
来源 Acta Mechanica Solida Sinica ,2018,31(6):775-784 【核心库】
DOI 10.1007/s10338-018-0036-4
关键词 Phononic bandgap materials ; Multiphase microstructures ; Topology optimization
地址

1. Shenyang Aerospace University, Key Laboratory of Liaoning Province for Composite Structural Analysis of Aerocraft and Simulation, Shenyang, 110136  

2. School of Civil Engineering,Shenyang Jianzhu University, Shenyang, 110168  

3. Department of Mechanics,Tianjin University, Tianjin, 300072

语种 英文
文献类型 研究性论文
ISSN 0894-9166
学科 力学
基金 国家自然科学基金 ;  辽宁省自然科学基金 ;  Program for Liaoning Excellent Talents in University (LNET)
文献收藏号 CSCD:6403560

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