›› 2018, Vol. 39 ›› Issue (2): 728-734.doi: 10.16285/j.rsm.2016.0280

• Numerical Analysis • Previous Articles     Next Articles

Application of extended finite element method in modelling fracture of rock mass

LUO Xian-qi1, ZHENG An-xing2   

  1. 1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. School of Water Conservancy and Environmental Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou, Zhejiang 310018, China
  • Received:2016-12-05 Online:2018-02-10 Published:2018-06-06
  • Supported by:

    This work was supported by the National Program on Key Basic Research Project of China (973 Program) (2011CB013505), the National Natural Science Foundation of China (51279100) and the Zhejiang Provincial Natural Science Foundation of China (LQ18E090003).

PDF (Chinese)

943

Abstract: Faults, joints and fractures are widely distributed in rock masses, and these discontinuities of existence and development have a significant effect on the whole strength, deformation and stability of rock mass. Thus, studying the evolvement of initiation, propagation and coalescence of primary flaws is of significance in theory and practice for estimating the safety and reliability of rock engineering. The extended finite element method (XFEM) is a numerical method for modelling discontinuities within the classical finite element framework. Since the computation mesh in XFEM is independent of the discontinuities, re-meshing for moving discontinuities can be overcome. Owing to the unique advantage for fracture analysis, XFEM has been employed to simulate hydraulic fracture and crack propagation of rock mass. The basic theory of XFEM and its application in simulating crack propagation are studied in detail. The numerical model of solving the frictional contact problem and hydraulic fracture propagation is developed. The calculation model is used to solve some geotechnical problems, such as deformation and failure of jointed rock slopes and modelling fracture propagation of gravity dam foundations.

Key words: extended finite element method, fracture of rock mass, friction contact, stress intensity factor

CLC Number: 

  • TU 452

[1] WANG Xiang-nan, HAO Qing-shuo, YU Jia-lin, YU Yu-zhen, LÜ He, . Three-dimensional simulation of the separation of dam panel based on extended finite element method [J]. Rock and Soil Mechanics, 2020, 41(S1): 329-336.
[2] NIE Zhi-bao, ZHENG Hong, WAN Tao, LIN Shan. The numerical manifold method for boundary integrals in elastostatics [J]. Rock and Soil Mechanics, 2020, 41(4): 1429-1436.
[3] WANG Xiang-nan, LI Quan-ming, YU Yu-zhen, YU Jia-lin, LÜ He, . Simulation of the failure process of landslides based on extended finite element method [J]. Rock and Soil Mechanics, 2019, 40(6): 2435-2442.
[4] YANG Shi-kou, ZHANG Ji-xun, REN Xu-hua, . Study of contact cracks based on improved numerical manifold method [J]. Rock and Soil Mechanics, 2019, 40(5): 2016-2021.
[5] WANG Deng-ke, SUN Liu-tao, WEI Jian-ping, . Microstructure evolution and fracturing mechanism of coal under thermal shock [J]. Rock and Soil Mechanics, 2019, 40(2): 529-538.
[6] ZHENG An-xing, LUO Xian-qi, CHEN Zhen-hua, . Hydraulic fracturing coupling model of rock mass based on extended finite element method [J]. Rock and Soil Mechanics, 2019, 40(2): 799-808.
[7] WEI Kuang-min , CHEN Sheng-shui, LI Guo-ying, WU Jun-jie, . Influence of contact effect between dam body and dam foundation on behaviours of high concrete faced rockfill dam built in steep valleys [J]. , 2018, 39(9): 3415-3424.
[8] YANG Shi-kou, REN Xu-hua, ZHANG Ji-xun，. Study on hydraulic fracture of gravity dam using the numerical manifold method [J]. , 2018, 39(8): 3055-3060.
[9] LI Qing, YU Qiang, XU Wen-long, WAN Ming-hua, ZHANG Zheng, Lü Chen, WANG Han-jun，. Experimental research on determination of dynamic stress intensity factor of type-Ⅰ crack using strain gage method [J]. , 2018, 39(4): 1211-1218.
[10] SONG Yi-min, XING Tong-zhen, LÜ Xiang-feng, ZHAO Ze-xin, DENG Lin-lin, . Fracture characteristics of granite with mode-I pre-crack at different loading rates [J]. Rock and Soil Mechanics, 2018, 39(12): 4369-4375.
[11] YANG Shi-kou, REN Xu-hua, ZHANG Ji-xun，. Application of enriched numerical manifold method to hydraulic fracture [J]. , 2018, 39(10): 3875-3881.
[12] YANG Ren-shu, SU Hong, GONG Yue, CHEN Cheng，. Study on the regularity of asymmetric Y-shaped cracks propagation under blast loading [J]. , 2017, 38(8): 2175-2181.
[13] LI Nian-bin, DONG Shi-ming, HUA Wen. Analysis of the effect of crack face contact on stress intensity factors for a centrally cracked Brazilian disk [J]. , 2017, 38(8): 2395-2401.
[14] WANG Rong-hua, ZHANG Qing, XIA Xiao-zhou. Fully coupled modeling of fractured saturated porous medium using extended finite element method [J]. , 2017, 38(5): 1489-1496.
[15] YAN Xiu-fa, QIAN Qi-hu, ZHAO Yue-tang, ZHOU Yin-zhi,. A method for simulating fracture in quasi-brittle materials [J]. , 2017, 38(12): 3462-3468.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd