Abstract
Abstract General finite element software has unique advantages in solving complicated engineering problems, which has been widely applied in the dynamic analysis of single-phase media. However, the commonly used software does not provide a saturated porous two-phase element that can be adopted for dynamic analysis. In this paper, a user-defined element for dynamic analysis of saturated porous media is developed in the general finite element software ABAQUS. The user-defined element takes the displacements of solid skeleton and pore fluid as the basic unknown-variables, and adopts the implicit time integration scheme. By combining it with the equivalent linear method, the nonlinear dynamic analysis of saturated soil can also be realized. The correctness of the user-defined element is verified by solving four numerical examples.
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