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首页> 外文期刊>Transport in Porous Media >A Partition of Unity-Based Model for Crack Nucleation and Propagation in Porous Media, Including Orthotropic Materials
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A Partition of Unity-Based Model for Crack Nucleation and Propagation in Porous Media, Including Orthotropic Materials

机译:基于单元的分区模型,包括正交异性材料,在多孔介质中的裂纹成核和扩展

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摘要

In this paper, we present a general partition of unity-based cohesive zone model for fracture propagation and nucleation in saturated porous materials. We consider both two-dimensional isotropic and orthotropic media based on the general Biot theory. Fluid flow from the bulk formation into the fracture is accounted for. The fracture propagation is based on an average stress approach. This approach is adjusted to be directionally depended for orthotropic materials. The accuracy of the continuous part of the model is addressed by performing Mandel's problem for isotropic and orthotropic materials. The performance of the model is investigated with a propagating fracture in an orthotropic material and by considering fracture nucleation and propagation in an isotropic mixed-mode fracture problem. In the latter example we also investigated the influence of the bulk permeability on the numerical results.
机译:在本文中,我们为饱和多孔材料中的裂缝扩展和成核提供了基于单元的内聚区模型的一般划分。我们根据一般的毕奥特理论来考虑二维各向同性和正交各向异性介质。解释了从块体进入裂缝的流体流。裂缝的扩展基于平均应力方法。将此方法调整为定向各向异性材料的方向依赖。通过对各向同性和正交异性材料执行Mandel问题,可以解决模型连续部分的准确性。通过在正交各向异性材料中传播的裂缝以及在各向同性混合模式裂缝问题中考虑裂缝成核和扩展来研究模型的性能。在后一个示例中,我们还研究了体积渗透率对数值结果的影响。

著录项

  • 来源
    《Transport in Porous Media》 |2015年第3期|505-522|共18页
  • 作者单位

    Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, The Netherlands;

    Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, The Netherlands;

    Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, The Netherlands;

    Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, The Netherlands;

    Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cohesive zone method; Partition of unity method; Poromechanics;

    机译:粘结区法;分割统一法;动力力学;

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