Title of article :
Effect of rotation on Rayleigh waves in piezothermoelastic half space
Author/Authors :
J.N. Sharma، نويسنده , , Vishal Walia ، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
The present paper deals with the study of rotation effect on the characteristics of Rayleigh waves propagating in a
homogeneous, transversely isotropic piezothermoelastic half space in the framework of linear theory including Coriolis
and Centrifugal forces. The medium is subjected to stress free, thermally insulated, electrically shorted/charge free boundary
conditions and is rotating about an axis perpendicular to its plane. Characteristics of surface waves propagating in
thermoelastic piezoelectric solids and their dependence upon various geometric and physical parameters are derived. After
deriving secular equations in closed form and isolated mathematical conditions, the effect of rotation on dispersion curves
and attenuation profiles is studied. The specific loss factor and relative frequency shift are also obtained in case of open and
closed circuit electric surface conditions. Finally, in order to illustrate and verify the analytical results, numerical solution
of various secular equations and other relevant relations are derived for cadmium selenide (6 mm) class material. The analysis
shows that the rotation sensitivity at long wavelengths (in the vicinity of the surface) is substantially greater than those
at short wavelengths (deep into the half space). The study is very helpful in the development of rotation sensors and other
piezoelectric devices.
Keywords :
Piezothermoelasticity , Frequency shift , Rayleigh waves , DesCartes’ algorithm , Rotation
Journal title :
International Journal of Solids and Structures
Journal title :
International Journal of Solids and Structures