论文标题
不饱和多孔培养基中局部故障的计算周围力学模型
A computational periporomechanics model for localized failure in unsaturated porous media
论文作者
论文摘要
我们实施了一个计算周围的动力学模型，以模拟不饱和多孔介质中的局部故障。耦合的周围力学模型基于Peridyannic态概念和有效的力状态概念。耦合的控制方程是积分分化的方程，而无需假设固体位移和流体压力的连续性。流体流量和有效力状态通过非局部流体压力和变形梯度通过最近配制的多相本构对应原理确定。使用消息传递接口的隐式多相网状方法，通过隐式多相网格的方法来实现数值用于高性能计算的耦合周期机电。数值实现是通过模拟经典的门保护问题并将数值结果与分析解决方案和实验数据进行比较来验证的。提出了数值示例，以证明在不饱和多孔培养基中对局部失败进行建模时，完全耦合的周围力学的鲁棒性。
We implement a computational periporomechanics model for simulating localized failure in unsaturated porous media. The coupled periporomechanics model is based on the peridynamic state concept and the effective force state concept. The coupled governing equations are integral-differential equations without assuming the continuity of solid displacement and fluid pressures. The fluid flow and effective force states are determined by nonlocal fluid pressure and deformation gradients through the recently formulated multiphase constitutive correspondence principle. The coupled peri-poromechanics is implemented numerically for high-performance computing by an implicit multiphase meshfree method utilizing the message passing interface. The numerical implementation is validated by simulating classical poromechanics problems and comparing the numerical results with analytical solutions and experimental data. Numerical examples are presented to demonstrate the robustness of the fully coupled peri-poromechanics in modeling localized failures in unsaturated porous media.
