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.
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