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Modeling and Simulation of Saturated Geomaterials

机译：饱和土工材料的建模与仿真

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Fully coupled, porous solid-fluid formulation and related modeling and simulation issues are presented in this work. In particular, coupled dynamic field equations with u?p?U formulation are used to simulate pore fluid and soil skeleton responses. Present formulation allows, among other features, for water accelerations to be taken into account. This proves useful in modeling dynamic interaction of media of different stiffness (as in soil–foundation–structure interaction). Fluid compressibility is also explicitly taken into account, thus allowing excursions into modeling of limited cases of non-saturated porous media. One of the main challenges in modeling saturated soils is the appropriate modeling of elastic– plastic behavior of soil skeleton. This challenge is met with the use of an advanced material model (Dafalias and Manzari 2004) and is discussed at some length. Illustrative examples describing dynamical behavior of porous media (saturated soils) are presented. Of particular interest is the verification and validation (V&V) of current models and simulations, and examples will be used for that purpose.
机译：这项工作提出了完全耦合的多孔固体流体配方以及相关的建模和仿真问题。特别是，使用具有u？p？U公式的耦合动态场方程来模拟孔隙流体和土壤骨架响应。除其他特征外，目前的配方允许考虑水的加速。在模拟不同刚度的介质的动力相互作用（如在土-基础-结构相互作用中）时，这被证明是有用的。还明确考虑了流体的可压缩性，因此允许对非饱和多孔介质的有限情况进行建模。对饱和土壤进行建模的主要挑战之一是对土壤骨架的弹塑性行为进行适当的建模。使用先进的材料模型可以解决这一难题（Dafalias和Manzari 2004），并进行了详尽的讨论。给出了描述多孔介质（饱和土壤）动力学行为的说明性例子。特别令人感兴趣的是当前模型和仿真的验证和确认（V＆V），示例将用于此目的。

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