SH wavefields in cylindrical double-layered elastic media excited by a shear stress source applied to a borehole wall

2005 ◽  
Vol 2 (2) ◽  
pp. 169-175 ◽  
Author(s):  
Gui-Jin Yao ◽  
Ke-Xie Wang ◽  
Jun Ma ◽  
J E White
Keyword(s):  
Shear Stress ◽  
Borehole Wall ◽  
Elastic Media ◽  
Layered Elastic Media

The oscillations of layered elastic media with a wavy boundary

2010 ◽  
Vol 74 (6) ◽  
pp. 633-636 ◽  
Author(s):  
V.A. Babeshko ◽  
O.M. Babeshko ◽  
O.V. Yevdokimova
Keyword(s):  
Elastic Media ◽  
Wavy Boundary ◽  
Layered Elastic Media

Computation of modal solutions in layered, elastic media at high frequencies

1965 ◽  
Vol 55 (2) ◽  
pp. 335-358 ◽  
Author(s):  
John W. Dunkin
Keyword(s):  
Wave Propagation ◽  
Elastic Media ◽  
Layered Systems ◽  
Matrix Formulation ◽  
High Frequencies ◽  
Matrix Products ◽  
Significant Figures ◽  
Natural Decomposition ◽  
Layered Elastic Media

Abstract Modal calculations of wave propagation in layered, elastic media exhibit numerical difficulties at high frequencies. This report shows that these difficulties are caused by the computation of squares of exponential terms which, although they cancel numerically, cause a loss of significant figures in the secular function and the components of certain matrix products. A matrix formulation is presented that avoids these difficulties and gives a natural decomposition of the modal solutions into source and receiver parts. The formulation is applied to layered systems containing both fluid and solid layers as well as to systems composed of solid layers alone.

A note on the computation of Rayleigh wave dispersion curves for layered elastic media

1964 ◽  
Vol 54 (3) ◽  
pp. 1013-1019
Author(s):  
J. H. Rosenbaum
Keyword(s):  
Rayleigh Wave ◽  
Wave Dispersion ◽  
Dispersion Curves ◽  
Elastic Media ◽  
Significant Figures ◽  
Rayleigh Wave Dispersion ◽  
Layered Elastic Media

Abstract In the computation of Rayleigh wave dispersion curves for layered elastic media, difficulties arise which take the form of a loss of significant figures and which can be ascribed to the fact that the motion in one section of the medium is weakly or only partly coupled to the motion in another section. These difficulties can be effectively removed if account is taken of such decoupling effects.

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