Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock
文献类型：期刊论文
| 作者 | Yue ZW3; Zhou J3 ; Feng C(冯春)2; Wang X3; Peng LZ3; Cong JY1
|
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 144页码:11 |
| 关键词 | Continuum-discontinuum element method Material point method Rock blasting Numerical simulation |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2021.104629 |
| 通讯作者 | Feng, Chun(644157990@qq.com) |
| 英文摘要 | A rock blasting simulation method is proposed that couples the material point method (MPM) and continuum discontinuum element method (CDEM). Blast-induced rock fractures are captured by the CDEM using normal and shear springs, and the explosive detonation is simulated by the MPM with a Jones-Wilkins-Lee equation of state. A particle-surface/edge contact method is introduced into the MPM-CDEM to calculate the interaction between the detonation products and rock medium. Three numerical examples are presented to verify the effectiveness of the proposed method. The fracture degree is represented as the ratio of the number of fractured springs to the total number of springs, and is used to analyze the evolution of shear and tension cracks under blasting. The simulation results show that the proposed numerical method well simulates blast-induced rock fractures and considers both progressive rock fracturing and the real explosive detonation. In particular, the expansion of the detonation gas, crushed zone around the blasthole, radial cracks, and effects of pre-existing stress on the blast-induced fractures are all successfully simulated. |
| WOS关键词 | INDUCED STRESS WAVES ; NUMERICAL-SIMULATION ; CONSTITUTIVE MODEL ; PARTICLE METHOD ; DAMAGE ; PROPAGATION ; MASS ; FRAGMENTATION ; MECHANISMS ; VIBRATIONS |
| 资助项目 | National Natural Science of China |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000754537300002 |
| 资助机构 | National Natural Science of China |
| 其他责任者 | Feng, Chun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88596]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Gdem Technol Co Ltd, Beijing 100096, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yue ZW,Zhou J,Feng C,et al. Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock[J]. COMPUTERS AND GEOTECHNICS,2022,144:11. |
| APA | Yue ZW,Zhou J,冯春,Wang X,Peng LZ,&Cong JY.(2022).Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock.COMPUTERS AND GEOTECHNICS,144,11. |
| MLA | Yue ZW,et al."Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock".COMPUTERS AND GEOTECHNICS 144(2022):11. |
入库方式： OAI收割
来源：力学研究所
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