Hybrid FEM and peridynamic simulation of hydraulic fracture propagation in saturated porous media

Tao Ni, Francesco Pesavento, Mirco Zaccariotto, Ugo Galvanetto, Qi Zhi Zhu, Bernhard A. Schrefler

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

This paper presents a hybrid modeling approach for simulating hydraulic fracture propagation in saturated porous media: ordinary state-based peridynamics is used to describe the behavior of the solid phase, including the deformation and crack propagation, while FEM is used to describe the fluid flow and to evaluate the pore pressure. Classical Biot poroelasticity theory is adopted. The proposed approach is first verified by comparing its results with the exact solutions of two examples. Subsequently, a series of pressure- and fluid-driven crack propagation examples are solved and presented. The phenomenon of fluid pressure oscillation is observed in the fluid-driven crack propagation examples, which is consistent with previous experimental and numerical evidences. All the presented examples demonstrate the capability of the proposed approach in solving problems of hydraulic fracture propagation in saturated porous media.

Original languageEnglish (US)
Article number113101
JournalComputer Methods in Applied Mechanics and Engineering
Volume366
DOIs
StatePublished - Jul 1 2020

Keywords

  • Finite element method
  • Hydraulic fracture propagation
  • Peridynamics
  • Saturated porous media

ASJC Scopus subject areas

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

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