文献类型：期刊文献

英文题名：Numerical study on cracking behavior and fracture failure mechanism of flawed rock materials under uniaxial compression

作者：Niu, Yong[1,2,3];Wang, Jin-Guo[2];Wang, Xing-Kai[1,4,7];Hu, Yun-Jin[1,8];Zhang, Jian-Zhi[3];Zhang, Ran-Ran[5];Hu, Zhi-Jun[6]

机构：[1]Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing, Zhejiang, Peoples R China;[2]Hohai Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China;[3]Fuzhou Univ, Zijin Sch Geol & Min, Fuzhou, Peoples R China;[4]State Key Lab Coal Min & Clean Utilizat, Beijing, Peoples R China;[5]Northwestern Polytech Univ, Sch Ecol & Environm, Xian, Shaanxi, Peoples R China;[6]Zhejiang Univ Sci & Technol, Sch Environm & Nat Resources, Hangzhou, Zhejiang, Peoples R China;[7]Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312099, Zhejiang, Peoples R China;[8]Zhejiang Univ Sci & Technol, Sch Environm & Nat Resources, Hangzhou 310023, Zhejiang, Peoples R China

年份：0

外文期刊名：FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES

收录：SCI-EXPANDED(收录号：WOS:000943351300001)、、EI(收录号：20231113697396)、Scopus(收录号：2-s2.0-85149560333)、WOS

基金：ACKNOWLEDGMENTS The present work is supported by the National Natural Science Foundation of China (grant nos. 52204147, 42107029, and 52109124), the Shaoxing Basic Public Welfare Planning Project (grant no. 2022A13004), the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (grant no. ZJRMG-2021-04), the China Postdoctoral Science Foundation (grant no. 2019M663824), the Zhejiang Provincial 26 County Green Special Project (grant no. 2021C02031), and the Open Fund of State Key Laboratory of Coal Mining and Clean Utilization (2021-CMCU-KF011), which are gratefully acknowledged.

语种：英文

外文关键词：crack coalescence; crack initiation; failure criterion; fracture behavior; fracture mechanism; numerical method

外文摘要：The numerical approach is a vital means for evaluating the stability of flawed rocks. In this paper, the extended non-ordinary state-based peridynamics (NOSB-PD) theory is employed to simulate the fracture process of rocks containing two pre-existing flaws. Two stress criteria, including the maximum tensile stress criterion and the Mohr-Coulomb criterion, are implemented into the NOSB-PD numerical method to respectively judge the tensile and shear failure of rock materials. The effects of inclination angles and ligament angles on the crack initiation and coalescence modes for flawed rocks are investigated based on the numerical results. The numerical results are in good agreement with the previous experimental results. The fracture mechanism of flawed rocks is revealed based on the evolutionary distribution characteristics of the maximum principal stress field and shear stress field obtained by the extended NOSB-PD theory.