Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock

doi:10.1016/j.compgeo.2021.104629

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock
	Yue, Zhongwen 3; Zhou, Jun 3; Feng, Chun 2; Wang, Xu 3; Peng, Linzhi 3; Cong, Junyu 1
刊名	COMPUTERS AND GEOTECHNICS
	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.
资助项目	National Natural Science of China
WOS关键词	INDUCED STRESS WAVES ; NUMERICAL-SIMULATION ; CONSTITUTIVE MODEL ; PARTICLE METHOD ; DAMAGE ; PROPAGATION ; MASS ; FRAGMENTATION ; MECHANISMS ; VIBRATIONS
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
内容类型	期刊论文
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-)
通讯作者	Feng, Chun
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, Zhongwen,Zhou, Jun,Feng, Chun,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, Zhongwen,Zhou, Jun,Feng, Chun,Wang, Xu,Peng, Linzhi,&Cong, Junyu.(2022).Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock.COMPUTERS AND GEOTECHNICS,144,11.
MLA	Yue, Zhongwen,et al."Coupling of material point and continuum discontinuum element methods for simulating blast-induced fractures in rock".COMPUTERS AND GEOTECHNICS 144(2022):11.