Full text loading...
Dispersion relations of the phononic thin plate with stubs of differing height along direction: (a) flat thin plate, (b) stub height , (c) stub height , and (d) stub height . Lattice constant , plate thickness , and diameter of the cylindrical stub is 7 mm.
Dispersion relations of the thin plate with a periodic stubbed surface in a square array made of aluminum 6061 with , , , and . Complete band gap and partial band gap along the direction are shown as the blue region and green region, respectively.
Schematic diagrams of the experimental setup. Measurements are along the and directions. Source and receiver are four rows apart along the direction.
Measured reference spectra (normal displacement) for waves propagating along the (a) and (b) directions, respectively.
(a) Reference spectra measured on the top of the stub (both normal and transverse displacements by using point piezoelectric transducers). (b) Eigenmode analysis by FE method, with , , (c) , , (d) , , (e) , , (f) , , and (g) , .
Article metrics loading...