Year: 2019
Type: article
Abstract: Controlling the trajectory of general elastic waves with metamaterials is very difficult, because the classical elastic wave equations are not form-invariant. However, this study points out that the elastodynamic potential energy can nearly retain its form after conformal mapping, if the longitudinal wave velocity is much greater than the transverse. Based on this finding, an elastic-wave bender is designed and fabricated using two types of conventional rubber, and is verified as an efficient vibration isolator with a broad operating bandwidth. It even breaks the limit on damping ratios required by classical passive-vibration theory.
Source: Physical Review Applied
Authors: Hexuan Gao, Zhihai Xiang
Institution: Tsinghua University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Award: G2038947255
OpenAlex ID: W2889845467