scholarly journals Three dimensional scattering of elastic waves by surface corrosion pits

1996 ◽  
Vol 29 (4) ◽  
pp. 253
Keyword(s):  
Elastic Waves ◽  
Three Dimensional ◽  
Surface Corrosion ◽  
Scattering Of Elastic Waves ◽  
Corrosion Pits

Multiple Scattering of Elastic Waves by Cubical Lattices of Spheres

2007 ◽  
Author(s):  
Zunping Liu ◽  
Liang-Wu Cai
Keyword(s):  
Multiple Scattering ◽  
Elastic Waves ◽  
Dimensional Space ◽  
Near Field ◽  
Scattering Problem ◽  
Three Dimensional ◽  
Computational System ◽  
Number Of Layers ◽  
Scattering Of Elastic Waves ◽  
Three Dimensional Space

The band gap for elastic waves propagating in a cubical lattice of spherical scatterers is observed through a series of numerical simulations. Along the direction of the incident wave, scatterer arrangements are viewed as comprising layers of scatterers, within which scatterers form a square grid. Starting from one layer and by increasing the number of layers, near-field forward and backward wave propagation spectra are computed as the number of layers increases. In the computations, scatterer polymerization methodology is used. This methodology is based on an analytically exact solution to a general three-dimensional multiple scattering problem obtained by the authors. It can be used to reduce an assemblage of actual scatterers to a lesser number of abstract scatterers. These simulations also demonstrate that the computational system has the capability to simulate multiple scattering of elastic waves in three-dimensional space.

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