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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Phase-field modeling of fluid-driven dynamic cracking in porous media
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Phase-field modeling of fluid-driven dynamic cracking in porous media

机译：多孔介质中流体驱动动态裂缝的相场建模

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摘要

A phase field model for fluid-driven dynamic crack propagation in poroelastic media is proposed. Therefore, classical Biot poroelasticity theory is applied in the porous medium while arbitrary crack growth is naturally captured by the phase field model. We also account for the transition of the fluid property from the intact medium to the fully broken one by employing indicator functions. We employ a staggered scheme and implement our approach into the software package COMSOL Multiphysics. Our approach is first verified through three classical benchmark problems which are compared to analytical solutions for dynamic consolidation and pressure distribution in a single crack and in a specimen with two sets of joints. Subsequently, we present several 2D and 3D examples of dynamic crack branching and their interaction with pre-existing natural fractures. All presented examples demonstrate the capability of the proposed approach of handling dynamic crack propagation, branching and coalescence of fluid-driven fracture. (C) 2019 Elsevier B.Y. All rights reserved.
机译：提出了一种多孔弹性介质中流体驱动动态裂纹传播的相现场模型。因此，经典的Biot Poro弹性理论施加在多孔介质中，而基本模型自然地捕获任意裂纹生长。我们还通过采用指标功能来解释流体性能从完整介质到完全破碎的流体性能。我们采用了一个交错的计划，并将我们的方法实施到软件包Comsol Multiphysics中。我们的方法是通过三种经典基准问题验证，与单个裂缝中动态固结和压力分布的分析解决方案进行了验证，并在具有两组接头的样本中。随后，我们介绍了几种动态裂纹分支的三维示例及其与预先存在的自然裂缝的相互作用。所有呈现的例子证明了处理动态裂纹传播，流体驱动骨折的分支和聚结的方法的能力。 （c）2019年Elsevier B.Y.版权所有。

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  • 来源
  • 作者

    Zhou Shuwei; Zhuang Xiaoying; Rabczuk Timon;

  • 作者单位

    Bauhaus Univ Weimar Inst Struct Mech D-99423 Weimar Germany|Tongji Univ Coll Civil Engn Dept Geotech Engn Shanghai 200092 Peoples R China|Leibniz Univ Hannover Inst Continuum Mech D-30167 Hannover Germany;

    Tongji Univ Coll Civil Engn Dept Geotech Engn Shanghai 200092 Peoples R China|Leibniz Univ Hannover Inst Continuum Mech D-30167 Hannover Germany;

    Ton Duc Thang Univ Div Computat Mech Ho Chi Minh City Vietnam|Ton Duc Thang Univ Fac Civil Engn Ho Chi Minh City Vietnam;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Phase field; Dynamic crack; Hydraulic fractures; Poroelasticity; COMSOL;

    机译：相位场;动态裂缝;液压骨折;孔弹性;COMSOL;

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