Adaptive phase field simulation of quasi-static crack propagation in rocks

authored by: Shuwei Zhou, Xiaoying Zhuang
Abstract: In this study, we present an adaptive phase field method (APFM) for modeling quasi-static crack propagation in rocks. Crack initiation due to positive strains is considered, and a numerical simulation is implemented using a commercial software, COMSOL Multiphysics. Two benchmark tests are first examined, namely, a single-edge-notched square plate subjected to respective tension and shear loadings. The crack propagation in Brazil splitting tests, 2D notched semi-circular bend (NSCB) tests, and 3D NSCB tests are subsequently simulated and analyzed. All the numerical examples indicate that the propagation of the cracks is autonomous and external fracture criteria are not required for phase field modeling. Furthermore, the adaptive remeshing scheme reduces unnecessary global mesh refinement and exhibits good adaptability for fracture modeling. The simulations are in good agreement with the experimental observations, and thereby indicate the feasibility and practicability of the APFM in rocks (even in 3D cases).
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Bauhaus-Universität Weimar
Tongji University
Type: Article
Journal: Underground Space (China)
Volume: 3
Pages: 190-205
No. of pages: 16
ISSN: 2096-2754
Publication date: 09.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Civil and Structural Engineering, Geotechnical Engineering and Engineering Geology, Building and Construction
Electronic version(s): https://doi.org/10.1016/j.undsp.2018.04.006 (Access: Open)
https://doi.org/10.15488/4893 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{96bf913eb3eb45a7af78f0c025d2f622,
title = "Adaptive phase field simulation of quasi-static crack propagation in rocks",
abstract = "In this study, we present an adaptive phase field method (APFM) for modeling quasi-static crack propagation in rocks. Crack initiation due to positive strains is considered, and a numerical simulation is implemented using a commercial software, COMSOL Multiphysics. Two benchmark tests are first examined, namely, a single-edge-notched square plate subjected to respective tension and shear loadings. The crack propagation in Brazil splitting tests, 2D notched semi-circular bend (NSCB) tests, and 3D NSCB tests are subsequently simulated and analyzed. All the numerical examples indicate that the propagation of the cracks is autonomous and external fracture criteria are not required for phase field modeling. Furthermore, the adaptive remeshing scheme reduces unnecessary global mesh refinement and exhibits good adaptability for fracture modeling. The simulations are in good agreement with the experimental observations, and thereby indicate the feasibility and practicability of the APFM in rocks (even in 3D cases).",
keywords = "Adaptive scheme, Crack propagation, Phase field, Rock",
author = "Shuwei Zhou and Xiaoying Zhuang",
note = "Funding information: The authors gratefully acknowledge financial support provided by the Sino-German (CSC-DAAD) Postdoc Scholarship Program 2016 .",
year = "2018",
month = sep,
doi = "10.1016/j.undsp.2018.04.006",
language = "English",
volume = "3",
pages = "190--205",
journal = "Underground Space (China)",
issn = "2096-2754",
publisher = "Tongji University Press",
number = "3",
}