Study of In-Plane Wave Propagation in 2-Dimensional Anisotropic Elastic Metamaterials

被引：18

作者：

Sang, Sheng ^{[1
]}

Sandgren, Eric ^{[1
]}

机构：

[1] Univ Arkansas, Dept Syst Engn, Little Rock, AR 72204 USA

来源：

JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES | 2019年 / 7卷 / 01期

关键词：

Elastic metamaterials; Wave propagation; Anisotropy; Christoffel equations; Snell's law; ACOUSTIC METAMATERIAL; ABSORPTION; REFRACTION; PLATES;

D O I：

10.1007/s42417-018-0076-6

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Objective Due to its multiple applications, elastic metamaterial is of great interest for researchers today. In this article, in-plane wave propagation in 2-D anisotropic metamateials with anisotropic density and anisotropic Young's modulus is comprehensively studied. Method Characteristics of wave propagation in 2-D metamaterial with different combinations of negative properties are provided, and the unnatural phenomenon is also explained. Based on Snell's law and weld boundary condition, analysis of wave propagation from conventional isotropic material into anisotropic metamaterial is performed. Significance This paper can serve as a foundation for future study of massive modeling and simulation of both isotropic and anisotropic metamaterials.

引用

页码：63 / 72

页数：10

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