This paper presents the equations of motion of an air saturated rectangular
porous plate. The model is based on a mixed displacement-pressure formulat
ion of the Biot-Allard theory [1]. We obtain a system of equations which de
scribe the coupling beetween the solid and fluid phases of the plate. This
system is solved by applying the Galerkin method. (C) 2001 Academie des sci
ences/Editions scientifiques et medicales Elsevier SAS.