Spherical wave propagation in a poroelastic medium with infinite permeability: time domain solution.
Exact time domain solutions for displacement and porepressure are derived for waves emanating from a pressurized spherical cavity, in an infinitely permeable poroelastic medium with a permeable boundary. Cases for blast and exponentially decaying step pulse loadings are considered; letter case, in the limit as decay constant goes to zero, also covers the step (uniform) pressure. Solutions clearly show the propagation of the second (slow) p-wave. Furthermore, Biot modulus Q is shown to have a pronounced influence on wave propagation characteristics in poroelastic media. Results are compared with solutions in classical elasticity theory.
Department of Civil Engineering, Ataturk University, 25240 Erzurum, Turkey.
Mehmet
M
Ozyazicioglu
D004548:Elasticity; D010539:Permeability; D016062:Porosity