期刊
ACTA MECHANICA SOLIDA SINICA
卷 31, 期 6, 页码 775-784出版社
SPRINGER
DOI: 10.1007/s10338-018-0036-4
关键词
Phononic bandgap materials; Multiphase microstructures; Topology optimization
资金
- National Natural Science Foundation of China [11672187, 11302135, 11502149, 51308357]
- Natural Science Foundation of Liaoning Province [201602572, 201602573, 201602627]
- Program for Liaoning Excellent Talents in University (LNET) [LJQ2014019]
The bandgap, an important characteristic of the periodic structure, is dispersion-related, 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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据