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Influence of Incompressibility on Different Wave Types in Porous Media
Author(s) -
Pryl Dobromil,
Schanz Martin
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310486
Subject(s) - poromechanics , compressibility , longitudinal wave , wave speed , mechanics , shear (geology) , porous medium , physics , wave propagation , porosity , classical mechanics , geology , materials science , geotechnical engineering , optics , composite material
There are three wave types in poroelastic continua, the fast compressional wave, with solid and fluid moving inphase, the shear wave, and the second (slow) compressional wave, which has no equivalent in elastic materials, with solid and fluid moving in opposite directions. The fast compressional wave propagates with infinite speed if both constituents are modelled incompressible. Numerical results of BEM calculations showing the influence of incompressible constituents will be presented as well as elements employing different shape functions for the solid displacements and the pore pressure.