Global S&T Development Trend Analysis Platform of Resources and Environment
| DOI | 10.2172/1235391 |
| 报告编号 | LLNL--TR-679839 |
| 来源ID | OSTI ID: 1235391 |
| DEM Particle Fracture Model | |
| Zhang, Boning; Herbold, Eric B.; Homel, Michael A.; Regueiro, Richard A. | |
| 2015-12-01 | |
| 出版年 | 2015 |
| 页数 | 48 |
| 语种 | 英语 |
| 国家 | 美国 |
| 领域 | 地球科学 |
| 英文摘要 | An adaptive particle fracture model in poly-ellipsoidal Discrete Element Method is developed. The poly-ellipsoidal particle will break into several sub-poly-ellipsoids by Hoek-Brown fracture criterion based on continuum stress and the maximum tensile stress in contacts. Also Weibull theory is introduced to consider the statistics and size effects on particle strength. Finally, high strain-rate split Hopkinson pressure bar experiment of silica sand is simulated using this newly developed model. Comparisons with experiments show that our particle fracture model can capture the mechanical behavior of this experiment very well, both in stress-strain response and particle size redistribution. The effects of density and packings o the samples are also studied in numerical examples. |
| 英文关键词 | Discrete Element Method particle fracture model high strain rate split Hopkinson pressure bar experiments Hoek-Brown fracture criterion maximum tensile stress in contacts packing e#11 ects |
| URL | 查看原文 |
| 来源平台 | US Department of Energy (DOE) |
| 引用统计 | |
| 文献类型 | 科技报告 |
| 条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/6855 |
| 专题 | 地球科学 |
| 推荐引用方式 GB/T 7714 | Zhang, Boning,Herbold, Eric B.,Homel, Michael A.,et al. DEM Particle Fracture Model,2015. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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。
修改评论