“…For dynamic SSI problem, the mixed boundary conditions from Equation to Equation describe the vibration source acting on the layered transversely isotropic poroelastic media. The corresponding response can be calculated by the extended precise integration method
41,42 with the surface flexibility coefficient
, which determines the relationship between the surface displacement
and stress
. The surface flexibility coefficient
has an equal value of the surface displacement
induced by a unit stress wavenumber in the transformed domain.…”