Poroelasticity

Summary

Poroelasticity is the theory of elastic solids whose connected pores are filled with a moving fluid, such as saturated soils, rocks, bone and hydrogels. The deformation of the skeleton and the pressure of the pore fluid act on each other. Squeezing the solid raises the pore pressure, and the pore pressure pushes the solid apart. The fluid flows according to Darcy's law, so the response is delayed in time by diffusion of pressure. The linear theory was founded by Maurice Biot and its quasi-static form is Biot consolidation theory.