Abstract
An application of the linear viscoelastic theory of nematic elastomers in the low-frequency (hydrodynamic) limit is considered. The boundary conditions at a free surface of a nematic elastomer half-space are satisfied to obtain the reflection of acoustic waves (qP or qSV). The expressions for reflection coefficients are obtained for each incident wave. The reflection coefficients are found to depend on various elastic constants, angle of incidence, frequency of incident wave, relaxation times and angle α between a wavevector and a nematic director. The reflection coefficients are plotted against the angle of incidence for suitable values of angle α, frequency and relaxation times. These coefficients are also plotted against non-dimensional frequency.
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