期刊
JOURNAL OF APPLIED PHYSICS
卷 127, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5140610
关键词
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资金
- Key Scientific Research Project of Henan Education Department [20A140008, 15A120007, 20A510004]
- Key Laboratory of Grain Information Processing and Control of Ministry of Education [KFJJ-2019-105, KFJJ-2018-102]
- High-level Talent Fund of Henan University of Technology [31401120]
- Basic Scientific Research Special Fund of Henan University of Technology [2015RCJH18]
We propose herein four types of anisotropic pentamode metamaterials (PMs) created by shifting the thin-end contention points along the space-diagonal, x-axis, y-axis, and z-axis directions. The phononic band structure and figure of merit (FOM) of the four types of anisotropic PMs are systematically investigated by using the finite-element method. Compared with isotropic PMs, the first phononic bandgaps appear in low-frequency regions, and the FOM increases by a factor of 6.9 when the thin-end connection area shifts along the z-axis direction. This study investigates how anisotropy affects PM properties and provides a reference to design acoustic cloaks, acoustic waveguides, and acoustic barriers.
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