scholarly journals Influence of gravity and initial stress on Rayleigh wave propagation in magneto-thermoelastic medium

2021 ◽  
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Initial Stress ◽  
Thermoelastic Medium

Effect of phase-lags on Rayleigh wave propagation in thermoelastic medium with mass diffusion

2015 ◽  
Vol 11 (4) ◽  
pp. 474-493 ◽  
Author(s):  
Rajneesh Kumar ◽  
Vandana Gupta
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Secular Equation ◽  
Mass Diffusion ◽  
Phase Lag ◽  
Dual Phase ◽  
Thermoelastic Medium ◽  
Thermoelastic Diffusion ◽  
Content Type ◽  
Phase Lags

Purpose – The purpose of this paper is to study the propagation of Rayleigh waves in thermoelastic medium with mass diffusion. Design/methodology/approach – The field equations for the linear theory of homogeneous isotropic thermoelastic diffusion medium are taken into consideration by using dual-phase-lag heat transfer (DPLT) and dual-phase-lag diffusion (DPLD) models. Using the potential functions and harmonic wave solution, three coupled dilatational waves and a shear wave is obtained. After developing mathematical formulation, the dispersion equation is obtained, which results to be complex and irrational. This equation is converted into a polynomial form of higher degree. Findings – From the polynomial equation, Rayleigh wave root is found. The secular equation is resolved into a polynomial form to find the roots and therefore to find the existence and propagation of Rayleigh wave. The existence of Rayleigh wave in the assumed model depends on the values of various parameters involved in the secular equation. These roots are resolved for phase velocity and attenuation of the inhomogeneous propagation of Rayleigh wave. Behavior of particle motion of these waves inside and at the surface of the thermoelastic medium with mass diffusion is studied. Particular cases of the interest are also deduced from the present investigation. Originality/value – Governing equations corresponding to DPLT and DPLD models of thermoelastic diffusion are formulated to study the wave propagation and their dependence on various material parameters. In this paper effects of thermal and diffusion phase lags on the phase velocity, attenuation and on particle paths are observed and depicted graphically.

Nonlocal scale effect on Rayleigh wave propagation in porous fluid-saturated materials

2018 ◽  
Vol 148 ◽  
pp. 459-466 ◽  
Author(s):  
L.H. Tong ◽  
S.K. Lai ◽  
L.L. Zeng ◽  
C.J. Xu ◽  
J. Yang
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Scale Effect

Non-reciprocal Rayleigh wave propagation in space–time modulated surface

2021 ◽  
Vol 146 ◽  
pp. 104196 ◽  
Author(s):  
Qian Wu ◽  
Hui Chen ◽  
Hussein Nassar ◽  
Guoliang Huang
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Space Time
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