Simulation of hydraulic fracturing in rock mass using a smeared crack model

Hu Yunjin, Chen Guolong, Cheng Weiping, James Yang

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

In this paper, a 3D smeared crack model with an evolutionary characteristic length is developed for the analysis of hydraulic fracturing in rock mass. A non-linear fluid–solid coupling finite element model is established and method for smeared cracking finite element model is presented. The evolutionary characteristic length method focuses on continuous adaptation of the crack band width which is based on the incremental finite element solution and the idea of nonlocal continuum. An interface coupling method is proposed to achieve the transition from a coarser mesh to a finer one. The results of two numerical examples indicate the superiority of the present formulation over the standard smeared crack model.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalComputers & Structures
Volume137
Early online date14 May 2013
DOIs
Publication statusPublished - Jun 2014
Externally publishedYes

Keywords

  • Hydraulic fracturing
  • Rock mass
  • Smeared crack model
  • Evolutionary characteristic length method
  • Interface coupling method

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