Concentrating Elastic Waves by Isotropic Homogeneous and Reflectionless Materials

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In this paper, we show that compared with the conventional transformation elastodynamics, the method based on physical interpretation of form-invariance can provide more flexibility in material design. As a result of this flexibility, the impedance-matched condition for both S and P waves in perpendicularly incident cases exists, thus the isotropic homogeneous elastic wave concentrator can be designed. Samples are conceived and validated by numerical simulations.

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210-213

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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