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Focussing bending waves via negative refraction in perforated thin plates
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10.1063/1.3327813
/content/aip/journal/apl/96/8/10.1063/1.3327813
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/8/10.1063/1.3327813
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Comparison of FEM computations of dispersion curves (continuous curves) against analytical estimate (11) (dotted curves) for a filling fraction of perforations in plate of 0.7 (side length with the pitch of the array). Horizontal axis: projection of the Bloch vector on the boundary of the first irreducible Brillouin zone . Vertical axis: bending wave frequency . The thick dotted curve corresponds to bending waves propagating in homogeneous plate along the direction.

Image of FIG. 2.
FIG. 2.

Isofrequency contours corresponding to dispersion curves of Fig. 1 when varies in . Negative refraction occurs at .

Image of FIG. 3.
FIG. 3.

Bending wave lensing for a point source at normalized frequency , through an array of 221 square perforations of side length , with the pitch of the array.

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/content/aip/journal/apl/96/8/10.1063/1.3327813
2010-02-23
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Focussing bending waves via negative refraction in perforated thin plates
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/8/10.1063/1.3327813
10.1063/1.3327813
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