A hybridized continuum-discontinuum modeling for investigating the fracture and energy evolution characteristics of rock mass under sequential explosive detonation using a bilinear cohesive fracture model

doi:10.1016/j.compgeo.2023.105607

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-)

	A hybridized continuum-discontinuum modeling for investigating the fracture and energy evolution characteristics of rock mass under sequential explosive detonation using a bilinear cohesive fracture model
	Lin QD(林钦栋); Zhu XG(朱心广); Yuan, Jianfei ; Feng C(冯春); Gan, Yundan ; Jiao, Wenjun ; Zhang, Yulei
刊名	COMPUTERS AND GEOTECHNICS
	2023-10-01
卷号	162 页码:105607
关键词	Rock mass Energy evolution Sequential detonation loading CDEM Energy statistics algorithm
ISSN号	0266-352X
DOI	10.1016/j.compgeo.2023.105607
英文摘要	Modelling the dynamic mechanical response of rock mass under sequential explosive detonation, especially the fracture and energy evolution characteristics, is the key to optimizing the spatial distribution and initiation time interval of explosives. A hybridized continuum-discontinuum element method and energy statistics algorithm are implemented in this study to accurately investigate the rock dynamic response induced by sequential detonation loading. Based on the rock fracture status and the stress-strain curve of bilinear cohesive fracture model, an energy statistics algorithm considering all energy components is first proposed, and its accuracy and robustness are verified. Then, the continuum-discontinuum element method and energy statistics algorithm are adopted to simulate the dynamic response of rock mass under sequential detonation loading. The results indicate that the area of cracked interfaces generated by each explosive first increases and then decreases, which caused by explosive 2 is the largest, accounting for 38.19%. Due to the damage to rock caused by the previous detonation loading, the rock around explosive 1 mainly undergoes shear fracture, while the rock around explosives 2 and 3 mainly undergoes tensile fracture. The change trends of various energy components are different, and the explosion energy is mainly converted into friction energy and element kinetic energy.
分类号	一类
WOS研究方向	Computer Science ; Engineering ; Geology
语种	英语
WOS记录号	WOS:001051488200001
其他责任者	Zhu, XG (corresponding author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92652]
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.{Zhu Xinguang, Feng Chun} Chinese Acad Sci Inst Mech Key Lab Mech Fluid Solid Coupling Syst Beijing 100190 Peoples R China 2.{Lin Qindong, Yuan Jianfei, Gan Yundan, Jiao Wenjun, Zhang Yulei} Xian Modern Chem Res Inst Xian 710065 Shaanxi Peoples R China
推荐引用方式 GB/T 7714	Lin QD,Zhu XG,Yuan, Jianfei,et al. A hybridized continuum-discontinuum modeling for investigating the fracture and energy evolution characteristics of rock mass under sequential explosive detonation using a bilinear cohesive fracture model[J]. COMPUTERS AND GEOTECHNICS,2023,162:105607.
APA	林钦栋.,朱心广.,Yuan, Jianfei.,冯春.,Gan, Yundan.,...&Zhang, Yulei.(2023).A hybridized continuum-discontinuum modeling for investigating the fracture and energy evolution characteristics of rock mass under sequential explosive detonation using a bilinear cohesive fracture model.COMPUTERS AND GEOTECHNICS,162,105607.
MLA	林钦栋,et al."A hybridized continuum-discontinuum modeling for investigating the fracture and energy evolution characteristics of rock mass under sequential explosive detonation using a bilinear cohesive fracture model".COMPUTERS AND GEOTECHNICS 162(2023):105607.