Bonded-cluster simulation of rock-cutting using PFC2D
文献类型：期刊论文
| 作者 | Tang Liping1; Lv Yanxin1,2; Li Haibo2 ; Zhu Xiaohua1
|
| 刊名 | CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS
 |
| 出版日期 | 2017 |
| 卷号 | 20期号:2页码:1289-1301 |
| 关键词 | Rock-cutting Voronoi cluster Fracture evolution Hydrostatic pressure Fragmentation |
| ISSN号 | 1386-7857 |
| DOI | 10.1007/s10586-017-0808-5 |
| 英文摘要 | The influence of hydrostatic pressure on rock-cutting based on Voronoi grain bonded-cluster model is investigated in this paper. Unconfined compressive strength and Brazilian tests are performed to calibrate the relations between micro-properties and mechanical properties of the rock sample. The influences of hydrostatic pressure, cutting velocity and cutting depth on rock-cutting are researched by particle flow code in 2 dimensions. With no hydrostatic pressure, the fractures in the upper area developed rather quickly into the rock along the horizontal direction when the cutter penetrates over 4 mm. The horizontal crack could eventually arrive at the free surface causing a large volume of fragment chips. Hydrostatic pressure could significantly influence the fracture evolution, inhibiting the formation of the long horizontal fracture. The influence of hydrostatic pressure on rock cutting becomes more and more obvious when the hydrostatic pressure is over 5 MPa. High hydrostatic pressure could inhibit the development of the fractures, increasing the energy requirements of drilling and effectively strengthening the rock. The influence of velocity on rock cutting is not obvious when the cutter penetration is less than 1 mm. However, the fracture volume presents a decreasing trend as the cutting velocity is increasing. There is an optimal cutting velocity for rock cutting, the corresponding optimal cutting velocity is 300 mm/s with high rock fragmentation efficiency. As the cutting depth increases, more and more micro-cracks are initiated around the cutter and the volume of the chipped fragmentation is increasing correspondingly. According to the simulation, it is believed that Voronoi grain-based model will contribute to a better understanding for the rock-tool interaction. |
| WOS研究方向 | Computer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000403457100030 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4074]  |
| 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 | Tang Liping,Lv Yanxin,Li Haibo,et al. Bonded-cluster simulation of rock-cutting using PFC2D[J]. CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS,2017,20(2):1289-1301. |
| APA | Tang Liping,Lv Yanxin,Li Haibo,&Zhu Xiaohua.(2017).Bonded-cluster simulation of rock-cutting using PFC2D.CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS,20(2),1289-1301. |
| MLA | Tang Liping,et al."Bonded-cluster simulation of rock-cutting using PFC2D".CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS 20.2(2017):1289-1301. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。