Discrete element method simulation of random Voronoi grain-based models

doi:10.1007/s10586-016-0705-3

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Discrete element method simulation of random Voronoi grain-based models
	Zhu, Xiaohua 1; Lv, Yanxin 1,2; Li, Haibo2 ; Liu, Weiji 1
刊名	CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS
	2017
卷号	20 期号:1 页码:335-345
关键词	DEM Voronoi Earthquake Slope Rockbfragmentation TBM
ISSN号	1386-7857
DOI	10.1007/s10586-016-0705-3
英文摘要	The generation of random Voronoi grain-based models for DEM simulation is proposed in this investigation. Voronoi diagram has important applications in rock engineering and geological engineering. However, the application of 3D Voronoi models has been limited due to the difficulty of generating 3D Voronoi domains. Little research has been done on the Voronoi tessellations of objects with irregular shapes. Voronoi tessellations of objects with regular and irregular shapes are investigated by using the Matlab function mpt_voronoi. The proposed models are then employed to simulate micro-fracturing and tension cracks in brittle rock. The 3D Voronoi grain-based slope model is used to investigate the dynamic response and failure mechanism of the rock slopes during earthquakes. The failures of rock slopes are actually due to the increasing and expanding of the tension cracks, the development of the tension surfaces and sliding of the blocks during earthquakes. The 2D Voronoi grain-based specimen composed of clusters is adopted to carry out rock fragmentation by TBM cutters. PFC simulation results reveal that the damaged rock undergoes some volume dilation that causes the expansion of the crushed zone and the propagation of the vertical crack. The rock fragmentations are actually caused by the increasing of the tension cracks. According to the simulation, it is believed thatVoronoi grainbased models will contribute to an improved knowledge of DEM simulation.
WOS研究方向	Computer Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000397969100028
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4025]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Southwest Petr Univ, Sch Mechatron Engn ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Zhu, Xiaohua,Lv, Yanxin,Li, Haibo,et al. Discrete element method simulation of random Voronoi grain-based models[J]. CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS,2017,20(1):335-345.
APA	Zhu, Xiaohua,Lv, Yanxin,Li, Haibo,&Liu, Weiji.(2017).Discrete element method simulation of random Voronoi grain-based models.CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS,20(1),335-345.
MLA	Zhu, Xiaohua,et al."Discrete element method simulation of random Voronoi grain-based models".CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS 20.1(2017):335-345.