Experimental Study on the Growth, Coalescence and Wrapping Behaviors of 3D Cross-Embedded Flaws Under Uniaxial Compression

被引：211
作者：
Zhou, Xiao-Ping [1 ,2 ]
Zhang, Jian-Zhi [1 ,2 ]
Wong, Louis Ngai Yuen [3 ]
机构：
[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
[3] Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
来源：
ROCK MECHANICS AND ROCK ENGINEERING | 2018年 / 51卷 / 05期
基金：
中国国家自然科学基金;
关键词：
3D cross-embedded flaw; Petal crack; Crack propagation; Crack wrapping; Crack coalescence; ROCK-LIKE MATERIALS; CRACK COALESCENCE; FRACTURE COALESCENCE; PROPAGATION; INITIATION; SPECIMENS; SANDSTONE; FISSURES;
D O I：
10.1007/s00603-018-1406-4
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The crack initiation, growth, wrapping and coalescence of two 3D pre-existing cross-embedded flaws in PMMA specimens under uniaxial compression are investigated. The stress-strain curves of PMMA specimens with 3D cross-embedded flaws are obtained. The tested PMMA specimens exhibit dominant elastic deformation and eventual brittle failure. The experimental results show that four modes of crack initiation and five modes of crack coalescence are observed. The initiations of oblique secondary crack and anti-wing crack in 3D cracking behaviors are first reported as well as the coalescence of anti-wing cracks. Moreover, two types of crack wrapping are found. Substantial wrapping of petal cracks, which includes open and closed modes of wrapping, appears to be the major difference between 2D and 3D cracking behaviors of pre-existing flaws, which are also first reported. Petal crack wraps symmetrically from either the propagated wing cracks or the coalesced wing cracks. Besides, only limited growth of petal cracks is observed, and ultimate failure of specimens is induced by the further growth of the propagated wing crack. The fracture mechanism of the tested PMMA specimens is finally revealed. In addition, the initiation stress and the peak stress versus the geometry of two 3D pre-existing cross-embedded flaws are also investigated in detail.
引用
收藏
页码：1379 / 1400
页数：22
相关论文
共 50 条
[41]   Experimental and Numerical Research on 3D Crack Growth in Rocklike Material Subjected to Uniaxial Tension [J].
Yang, Lei ;
Jiang, Yujing ;
Li, Shucai ;
Li, Bo .
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2013, 139 (10) :1781-1788
[42]   Morphologic Interpretation of Rock Failure Mechanisms Under Uniaxial Compression Based on 3D Multiscale High-resolution Numerical Modeling [J].
Li, Gen ;
Liang, Zheng-Zhao ;
Tang, Chun-An .
ROCK MECHANICS AND ROCK ENGINEERING, 2015, 48 (06) :2235-2262
[43]   Experimental investigation of fracture behavior of rock-like materials containing 3D embedded flaws subjected to direct and unloading normal stress shear action [J].
Zhao, Yu ;
Teng, Mingyang ;
Bi, Jing ;
Li, Zheng ;
Liu, Pengfei ;
Wang, Chaolin .
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2022, 81 (06)
[44]   Analysis of Micro-Evolution Mechanism of 3D Crack Initiation in Brittle Materials with Hole under Uniaxial Compression [J].
Maimaitiyusupu, Semaierjiang ;
Zhu, Zhende ;
Ren, Xuhua ;
Zhang, Hui ;
Zhu, Shu .
MATERIALS, 2024, 17 (04)
[45]   Dynamic fracture evolution of tight sandstone under uniaxial compression in high resolution 3D X-ray microscopy [J].
Zhang, Yifei ;
Niu, Suyun ;
Du, Zhongming ;
Hao, Jin ;
Yang, Jijin .
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2020, 195
[46]   Fracture behavior of granite specimen containing a single fissure under uniaxial compression by grain-based model 3D [J].
Tian, Wen-Ling ;
Yang, Sheng-Qi ;
Huang, Yan-Hua ;
Dong, Zhi-Jin .
ACTA MECHANICA SINICA, 2022, 38 (09)
[47]   Experimental Study of Crack Growth in Rock-Like Materials Containing Multiple Parallel Pre-existing Flaws Under Biaxial Compression [J].
Wang M. ;
Cao P. .
Geotechnical and Geological Engineering, 2017, 35 (3) :1023-1034
[48]   Experimental and numerical study of the failure process and energy mechanisms of rock-like materials containing cross unpersistent joints under uniaxial compression [J].
Cao, Rihong ;
Cao, Ping ;
Lin, Hang ;
Fan, Xiang .
PLOS ONE, 2017, 12 (12)
[49]   Experimental Study on Damage Behavior of Rock in Compression-Tension Cycle Test Using 3D Digital Image Correlation [J].
Tang, Yang ;
Okubo, Seisuke ;
Xu, Jiang ;
Peng, Shoujian .
ROCK MECHANICS AND ROCK ENGINEERING, 2019, 52 (05) :1387-1394
[50]   Experimental study of internal deformation in 3D solids with embedded parallel cracks during the fracture process using multi-material 3D printing and stereo digital image correlation [J].
Wang, Yating ;
Xing, Dongyi ;
Yu, Meilu ;
Qiao, Qing .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2025, 137
12345