›› 2014, Vol. 35 ›› Issue (6): 1809-1817.

• Numerical Analysis • Previous Articles     Next Articles

Modeling initiation and propagation of main and secondary cracks of rock under combined compression and shear loading using extended finite element method

SHI Fang1, 2, GAO Feng1, 2, LI Xi-ru1, 2, SHEN Xiao-ming1, 2   

  1. 1. State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; 2. School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
  • Received:2014-01-09 Online:2014-06-10 Published:2014-06-20

PDF (Chinese)

1726

Abstract: In rock-type materials, two types of cracks are observed under combined compression and shear loading: the tensile wing cracks, and the frictional secondary cracks. On the basis of the extended finite element method (XFEM), an extended finite element displacement enrichment method to model the interaction of the frictional crack surfaces is given. Besides, an approach to deal with the branched cracks is also presented. The maximum circumferential tensile stress criterion and the Mohr-Coulomb criterion are adopted respectively to predict the initiation and propagation of the tensile cracks and the frictional cracks. A Matlab program Betaxfem 2D has been developed and the proposed methods are verified through two examples; and then the crack bifurcation and propagation processes of the specimens with pre-existing closed fractures under uniaxial compression loading are simulated. The comparison with the experimental results indicates that methods proposed can be used to simulate and predict the initiation and propagation of the interactive tensile and frictional branched cracks in rock-type materials.

Key words: extended finite element method, rock, branched crack, crack propagation

CLC Number: 

  • O 320
[1] JIN Qing, WANG Yi-lin, CUI Xin-zhuang, WANG Cheng-jun, ZHANG Ke, LIU Zheng-yin, . Deformation behaviour of geobelt in weathered rock material-tire shred lightweight soil under pullout condition [J]. Rock and Soil Mechanics, 2020, 41(2): 408-418.
[2] ZHOU Cui-ying, KONG Ling-hua, CUI Guang-jun, YU Lei, LIU Zhen, . Molding simulation of soft rock based on natural red bed materials [J]. Rock and Soil Mechanics, 2020, 41(2): 419-427.
[3] ZHANG Shan-kai, LENG Xian-lun, SHENG Qian, . Study of water swelling and softening characteristics of expansive rock [J]. Rock and Soil Mechanics, 2020, 41(2): 561-570.
[4] WANG Pei-tao, HUANG Zheng-jun, REN Fen-hua, ZHANG Liang, CAI Mei-feng, . Research on direct shear behaviour and fracture patterns of 3D-printed complex jointed rock models [J]. Rock and Soil Mechanics, 2020, 41(1): 46-56.
[5] WANG feng, ZHANG Jian-qing, . Study of breakage behaviour of original rockfill materials considering size effect on particle strength [J]. Rock and Soil Mechanics, 2020, 41(1): 87-94.
[6] ZHANG Yan-bo, SUN Lin, YAO Xu-long, LIANG Peng, TIAN Bao-zhu, LIU Xiang-xin, . Experimental study of time-frequency characteristics of acoustic emission key signals during granite fracture [J]. Rock and Soil Mechanics, 2020, 41(1): 157-165.
[7] LU Hai-feng, MENG Xiang-shuai, YAN Wei, YAO Duo-xi, . Circular sliding solution of mining stability and failure depth of floor layered structure on coal face [J]. Rock and Soil Mechanics, 2020, 41(1): 166-174.
[8] JIANG Zhong-ming, LI Peng, ZHAO Hai-bin, FENG Shu-rong, TANG Dong, . Experimental study on performance of shallow rock cavern for compressed air energy storage [J]. Rock and Soil Mechanics, 2020, 41(1): 235-241.
[9] WENG Yong-hong, ZHANG Lian, XU Tang-jin, HUANG Shu-ling, DING Xiu-li, . Safety evaluation on interaction of new plug structure and surrounding rock mass under high water head [J]. Rock and Soil Mechanics, 2020, 41(1): 242-252.
[10] ZHOU Cui-ying, LIANG Ning, LIU Zhen, . Fractal characteristics of compression failure of red soft rock and cascading failure process [J]. Rock and Soil Mechanics, 2019, 40(S1): 21-31.
[11] ZHU Lei, HUANG Run-qiu, CHEN Guo-qing, YAN Ming, . Mechanical model and evolution of fracture system with a gentle dip angle in rock slope [J]. Rock and Soil Mechanics, 2019, 40(S1): 53-62.
[12] ZHANG Guo-kai, LI Hai-bo, WANG Ming-yang, LI Xiao-feng, . Crack propagation characteristics in rocks containing single fissure based on acoustic testing and camera technique [J]. Rock and Soil Mechanics, 2019, 40(S1): 63-72.
[13] ZHAO Guo-yan, LI Zhen-yang, WU Hao, WANG En-jie, LIU Lei-lei. Dynamic failure characteristics of sandstone with non-penetrating cracks [J]. Rock and Soil Mechanics, 2019, 40(S1): 73-81.
[14] XIAO Yao, DENG Hua-feng, LI Jian-lin, ZHI Yong-yan, XIONG Yu. The deterioration effect of fractured rock mass strengthened by grouting method under long-term immersion [J]. Rock and Soil Mechanics, 2019, 40(S1): 143-151.
[15] SONG Yong-jun, YANG Hui-min, ZHANG Lei-tao, REN Jian-xi. CT real-time monitoring on uniaxial damage of frozen red sandstone [J]. Rock and Soil Mechanics, 2019, 40(S1): 152-160.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TAN Xian-jun, CHEN Wei-zhong, YANG Jian-ping, YANG Chun-he. Study of THM-damage coupling model of gas storage in salt rock with interlayer[J]. , 2009, 30(12): 3633 -3641 .
[2] WEI Xing，WANG Gang，YU Zhi-ling. FEM of traffic-load-induced settlement of road on soft clay[J]. , 2010, 31(6): 2011 -2015 .
[3] WEN Shi-yi, LI Jing , SU Xia , YAO Xiong. Studies of mesomechanical structure characters of surrounding rock failure under complex stress state[J]. , 2010, 31(8): 2399 -2406 .
[4] MAO Ning，ZHANG Yao-liang. Typical examples of simple methods to find empirical formulas[J]. , 2010, 31(9): 2978 -2982 .
[5] LIU Jie，LI Jian-lin，QU Jian-jun，Cheng Xing，LI Jian-wu，LUO Shi-wei. Multiple factors analysis of influence of developing horizontal displacement at Dagangshan dam abutment slope based on unloading rock mass mechanics[J]. , 2010, 31(11): 3619 -3626 .
[6] LI Wei-hua, ZHAO Cheng-gang, DU Nan-xin. Analysis of effects of saturated soft interlayer on seismic responses of metro station[J]. , 2010, 31(12): 3958 -3963 .
[7] HAN Xian-min. Study of construction technology and mechanical effect of Guanjiao tunnel in shallow-buried sandy stratum in Xining-Golmud 2nd line[J]. , 2010, 31(S2): 297 -302 .
[8] JIANG Zheng-wei, PENG Jian-bing, WANG Qi-yao. Adverse geological problems and countermeasure of Xi’an Metro Line 3[J]. , 2010, 31(S2): 317 -321 .
[9] LIU Yong-hai, ZHU Xiang-rong, CHANG Lin-yue. Determining preconsolidation pressure by mathematic analysis based on casagrande method[J]. , 2009, 30(1): 211 -214 .
[10] ZHU Lei, HONG Bao-ning. Physico-mechanical characteristics of powdered soil of coal measure strata[J]. , 2009, 30(5): 1317 -1322 .
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