A Variational Deduction of Second Gradient Poroelasticity II: An Application to the Consolidation Problem

Details A Variational Deduction of Second Gradient Poroelasticity II: An Application to the Consolidation Problem A Variational Deduction of Second Gradient Poroelasticity II: An Application to the Consolidation Problem

2010-07-14

arxiv.org/abs/1007.2339v1

Journal of Mechanics of Materials and Structures, vol.3, 2008, pp. 607-625

Physics

Mathematical Physics

20 pages

Scientific paper

The second gradient model of poromechanics, introduced in Part I, is here linearized in the neighborhood of a prestressed reference configuration to be applied to the one-dimensional consolidation problem originally considered by Terzaghi and Biot. Second gradient models allow for the description of boundary layer effects both in the vicinity of the external surface and the impermeable wall. The formulated differential problem involves linear pencils of ordinary differential operators on a finite interval, with boundary conditions depending on the spectral parameter. Taking into account the dependence of the differential problem on initial stresses a linear stability analysis is carried out. Finally,numerical solutions are compared with the corresponding classical Terzaghi solutions.

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