Metamaterial based on elastic mechanics

Abstract

In recent years, artificial metamaterials base on micro structures are showing huge development potential in fields of materials science, acoustics, seismology and information technologies, due to their devisable physical singularities which do not exist in natural materials. The study of metamaterial was born out of electromagnetic metamaterial. Nowadays, metamaterials have achieved a big leap forward with developments in the fields of acoustic, thermal, static, static magnetic and elastic mechanics, which greatly expand their study fields. With the help of a Milton graph, we focus on the extraordinary characteristics of novel elastic mechanics-based metamaterials and their species, such as acoustic metamaterials with negative mass density and elastic modulus, auxetic metamaterials with negative Poissons ratio, inverse bulging metamaterials with shear modulus G =0 and ultra-light materials with high strength. In addition, combining with the transform mechanical, this paper focuses on the propagation characteristics of acoustic and elastic waves in this elastic mechanics metamaterial and then elaborated the characteristics and physical effects of surface acoustic waves in the interface of metamaterials with negative elasticity parameters. Finally, we make a summary and prospect of the development of metamaterials combining with the elastic mechanics metamaterial research condition in China, such as metamaterial and acoustic metamaterial operating acoustic and elastic wave propagation using the elastic mechanics, design and development of a new type of elastic mechanics metamaterial. We hope this will help to accelerate the application of this metamaterial in many research fields.