scholarly journals Dispersion of Torsional Surface Wave in a Pre-stress Anisotropic Porous Medium With Rigid and Traction Free Boundary Surface Over Sandy Half-Space

2017 ◽  
Vol 115 ◽  
pp. 771-778
Author(s):  
Ratan Mani Prasad ◽  
Santimoy Kundu
Keyword(s):  
Porous Medium ◽  
Surface Wave ◽  
Free Boundary ◽  
Half Space ◽  
Boundary Surface ◽  
Anisotropic Porous Medium ◽  
Torsional Surface Wave

Propagation of Torsional Surface Wave in an Anisotropic Porous Medium over a Dry Sandy Half-Space

2016 ◽  
Vol 16 (2) ◽  
pp. 04015050 ◽  
Author(s):  
Santimoy Kundu ◽  
Ratan Mani Prasad ◽  
Shishir Gupta ◽  
Santanu Manna
Keyword(s):  
Porous Medium ◽  
Surface Wave ◽  
Half Space ◽  
Anisotropic Porous Medium ◽  
Torsional Surface Wave

Influence of corrugated boundary surface and reinforcement of fibre-reinforced layer on propagation of torsional surface wave

2016 ◽  
Vol 23 (9) ◽  
pp. 1417-1436 ◽  
Author(s):  
Abhishek Kumar Singh ◽  
Anirban Lakshman ◽  
Amares Chattopadhyay
Keyword(s):  
Surface Wave ◽  
Dispersion Equation ◽  
Half Space ◽  
Boundary Surface ◽  
Lower Boundary ◽  
Transversely Isotropic ◽  
Wave Number ◽  
Torsional Surface Wave ◽  
Propagation Of Waves ◽  
Boundary Surfaces

These days fibre-reinforced materials are frequently used in construction sector for example in dams, bridges etc. Also the earth structure and artificial structure made by human may contain irregularity or corrugation, therefore, propagation of waves and vibrations through these structures gets affected by them. Motivated by these facts the present problem aims to study the propagation of torsional surface wave in a fibre-reinforced layer with corrugated boundary surface overlying an initially stressed transversely isotropic half-space. The closed form of the dispersion equation has been deduced and the notable effect of reinforcement, undulatory parameter of corrugated boundary surfaces of the layer, corrugation parameter of upper and lower boundary surfaces of the layer, initial stress acting in half-space and wave number on the phase velocity of torsional surface wave has been exhibited. The numerical computation along with graphical illustration has been carried out for fibre-reinforced layer of carbon fibre-epoxy resin and T300/5208 graphite/epoxy material for the transversely isotropic half-space. As a special case of the problem, deduced dispersion equation is found in well-agreement with the classical Love wave equation. Comparative study for reinforced and reinforced free layer has been performed and also depicted graphically. Moreover some analysis is made to highlight the important peculiarities of the problem.

Propagation of a torsional surface wave in a non-homogeneous anisotropic layer over a heterogeneous half-space

2016 ◽  
Vol 22 (16) ◽  
pp. 3479-3490 ◽  
Author(s):  
Santimoy Kundu ◽  
Shishir Gupta ◽  
Anup Saha ◽  
Santanu Manna
Keyword(s):  
Surface Wave ◽  
Half Space ◽  
Anisotropic Layer ◽  
Torsional Surface Wave

Dispersion Study of Propagation of Torsional Surface Wave in a Layered Structure

2017 ◽  
Vol 33 (3) ◽  
pp. 303-315 ◽  
Author(s):  
S. Gupta ◽  
N. Bhengra
Keyword(s):  
Wave Propagation ◽  
Surface Wave ◽  
Boundary Conditions ◽  
Half Space ◽  
Layered Structure ◽  
Transversely Isotropic ◽  
Whittaker Function ◽  
Anisotropic Layer ◽  
Surface Wave Propagation ◽  
Torsional Surface Wave

AbstractThis paper presents the feasibility of torsional surface wave propagation in an anisotropic layer sandwiched between two anisotropic inhomogeneous media. The anisotropy considered in the upper layer and the lower half-space is of transversely isotropic kind while the sandwiched anisotropic layer is a porous layer. The directional rigidities and density have been considered linearly and exponentially varying in the half-space and in the upper layer respectively, while it is taken as a variable in the sandwiched layer. The compact form of dispersion equation governing the propagation of the torsional surface wave has been derived by using the Whittaker function under appropriate boundary conditions. The dispersion of the torsional wave and the effects of inhomogeneity parameters, initial stress and poroelastic constant have been calculated numerically and demonstrated through graphs.

On torsional surface wave in dry sandy crust laid over an inhomogeneous half space

Meccanica ◽  
2015 ◽  
Vol 50 (7) ◽  
pp. 1807-1816 ◽  
Author(s):  
Ranjan Chattaraj ◽  
Sapan Kumar Samal ◽  
Sourav Debasis
Keyword(s):  
Surface Wave ◽  
Half Space ◽  
Torsional Surface Wave
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