Phase-field modeling of fluid-driven dynamic cracking in porous media

Shuwei Zhou, Xiaoying Zhuang, Timon Rabczuk

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)169-198
Number of pages30
JournalComputer Methods in Applied Mechanics and Engineering
Volume350
DOIs
Publication statusPublished - 2019 Jun 15

Keywords

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

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

Fingerprint Dive into the research topics of 'Phase-field modeling of fluid-driven dynamic cracking in porous media'. Together they form a unique fingerprint.

  • Cite this