IMECH-IR  > 流固耦合系统力学重点实验室
Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite
Yue Zhongwen1; Zhou Jun1; Feng C(冯春)2; Li Akang1; Qiu Peng1; Gang Mingwei1
Corresponding AuthorZhou, Jun(jzhou91@163.com)
Source PublicationFATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
2021-04-13
Pages14
ISSN8756-758X
AbstractA numerical study is conducted using the improved continuum-based discrete element method (CDEM) to investigate the effect of holes on the dynamic fracturing of multi-flawed rocks. The specimen geometries contain a perpendicular crack-like flaw, a hole-like flaw, and an inclined crack-like flaw. A fracture model is implemented into the improved CDEM that combines the nonlinear pressure-dependent shear strength and tensile strength of rocks. The digital image correlation method combined with ultra-high-speed photography is applied in a split Hopkinson pressure bar system to verify the accuracy of the proposed model. The experimental results show that the improved CDEM accurately reproduces dynamic crack behavior in rocks. The simulation results show that hole-like flaws significantly affect crack behavior compared with the two investigated crack-like flaws. However, this effect gradually weakens with increasing loading stresses. This study provides important insight into the dynamic fracturing of multi-flawed rocks.
Keywordcontinuum‐ based discrete element method crack flawed rock split Hopkinson pressure bar system
DOI10.1111/ffe.13474
Indexed BySCI ; EI
Language英语
WOS IDWOS:000639594000001
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
Funding ProjectNational Natural Science Foundation of China[51974318]
Funding OrganizationNational Natural Science Foundation of China
Classification二类/Q1
Ranking3
ContributorZhou, Jun
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/86435
Collection流固耦合系统力学重点实验室
Affiliation1.China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;
2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yue Zhongwen,Zhou Jun,Feng C,et al. Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2021:14.
APA Yue Zhongwen,Zhou Jun,冯春,Li Akang,Qiu Peng,&Gang Mingwei.(2021).Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,14.
MLA Yue Zhongwen,et al."Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2021):14.
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