Dynamics & Vibration Research Group
Tea-Time Talks - Abstracts
Wave Propagation in Lattice Materials.
Dr Srikantha Phani
CUED
Plane wave propagation in two-dimensional lattice materials is investigated using Floquet-Bloch principles. Frequency band-gaps and spatial filtering effects are examined in four representative planar lattice topologies: hexagonal honeycomb, Kagome lattice, triangular honeycomb and square honeycomb. Long-wavelength asymptotes to the dispersion curves based on homogenisation theory are in good agreement with the numerical results for each of the four lattices. Spatial filtering effects due to anisotropy at high frequencies of wave propagation are found to be consistent with the lattice symmetries.
Previous Talks
CUED
Plane wave propagation in two-dimensional lattice materials is investigated using Floquet-Bloch principles. Frequency band-gaps and spatial filtering effects are examined in four representative planar lattice topologies: hexagonal honeycomb, Kagome lattice, triangular honeycomb and square honeycomb. Long-wavelength asymptotes to the dispersion curves based on homogenisation theory are in good agreement with the numerical results for each of the four lattices. Spatial filtering effects due to anisotropy at high frequencies of wave propagation are found to be consistent with the lattice symmetries.
Previous Talks
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