A Unified Approach to the Dynamic Analysis of Soils as Multiphase Media
The paper presents a unified approach to the formulation of soil dynamic problems including the multiphase nature of fully or partially saturated soils. The formulation is based on the general equations of the theory of mixtures. Different approximations and corresponding finite element models are discussed. The soil skeleton is assumed to have an elastic plastic behavior. For non-cohesive soils an elastic plastic material model for cyclic loading is described. It includes the essential features of the solid skeleton that are of importance for the interaction of the different soil components. The paper presents the governing equations and their numerical implementation. Numerical applications are included.
KeywordsSaturated Soil Pore Fluid Solid Skeleton Momentum Balance Equation Elastic Plastic
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