TY - JOUR
T1 - Wave propagation in fluid-saturated porous media
T2 - An efficient finite element procedure
AU - Prevost, Jean H.
N1 - Funding Information:
The calculationpse rtainingto the seismicin ducedli que-faction behind a retainings tructurew ere supportedin part by a grant from the Navy Civil Engineering LaboratoryP, ort HuenemeC, alifornia.T his support is most gratefullya cknowledged.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1985/10
Y1 - 1985/10
N2 - An efficient finite element procedure to analyze wave propagation phenomena in fluid-saturated porous media is presented. The saturated porous medium is modelled as a two-phase system consisting of a solid and a fluid phase. Time integration of the resulting semi-discrete finite element equations is performed by using an implicit-explicit algorithm. In order to remove the time step size restriction associated with the presence of the stiff fluid in the mixture, the fluid contribution to the equations of motion is always treated implicitly. The procedure allows an optimal selection of the time step size independently of the fluid. Depending upon the particular intended applications (e.g., seismic, blast loading,...) the fluid may be assumed incompressible or compressible. Numerical results which demonstrate the accuracy and versatility of the proposed procedure are presented.
AB - An efficient finite element procedure to analyze wave propagation phenomena in fluid-saturated porous media is presented. The saturated porous medium is modelled as a two-phase system consisting of a solid and a fluid phase. Time integration of the resulting semi-discrete finite element equations is performed by using an implicit-explicit algorithm. In order to remove the time step size restriction associated with the presence of the stiff fluid in the mixture, the fluid contribution to the equations of motion is always treated implicitly. The procedure allows an optimal selection of the time step size independently of the fluid. Depending upon the particular intended applications (e.g., seismic, blast loading,...) the fluid may be assumed incompressible or compressible. Numerical results which demonstrate the accuracy and versatility of the proposed procedure are presented.
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U2 - 10.1016/0261-7277(85)90038-5
DO - 10.1016/0261-7277(85)90038-5
M3 - Article
AN - SCOPUS:0022145008
SN - 0261-7277
VL - 4
SP - 183
EP - 202
JO - International Journal of Soil Dynamics and Earthquake Engineering
JF - International Journal of Soil Dynamics and Earthquake Engineering
IS - 4
ER -