Effects of size and loading rate on the mechanical properties of single coral particles
文献类型：期刊论文
| 作者 | Ma, Linjian; Li, Zeng; Wang, Mingyang; Wei, Houzhen; Fan, Pengxian |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 342期号:-页码:961-971 |
| 关键词 | Single coral particle Crushing Loading rate Fragmentation mode Fractal dimension Fracture energy |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2018.10.037 |
| 英文摘要 | A series of single particle crushing tests were conducted on 400 coral particles with size ranges of 3-5 mm, 6.5-8.5 mm and 10-12 mm at loading rates of 0.1-50 mm/min. The effects of size and loading rate on the mechanical properties are assessed in terms of the frequency distribution of crushing strength, fragmentation mode, fractal dimension, and fracture energy density. It is proved that the crushing strength frequency distribution perfectly follows the Weibull statistics law, decreasing with an exponent of -0.286. A satisfying rate dependent equation is proposed to account for the characteristic tensile strength enhancement regarding strain rate. The fragmentation behaviour in conjunction with monitored load-displacement curves were classified into four typical modes. As the size decreases, the fragmentation mode changes from asperities breaking and surface grinding to primary brittle splitting. A higher applied loading rate may lead to an increasing possibility of major splitting occurrence. The fractal dimension is 2356 for coral particles, which is a bit larger than that of quartz sands and was found to be proportional to the natural logarithm of the strain rate. The fracture energy density tends to decrease as the particle size increases while to increase with increasing stain rates. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000454375100095 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15068]  |
| 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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Engn, Wuhan 430000, Hubei, Peoples R China 2.Army Engn Univ PLA, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China; 3.Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Jiangsu, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ma, Linjian,Li, Zeng,Wang, Mingyang,et al. Effects of size and loading rate on the mechanical properties of single coral particles[J]. POWDER TECHNOLOGY,2019,342(-):961-971. |
| APA | Ma, Linjian,Li, Zeng,Wang, Mingyang,Wei, Houzhen,&Fan, Pengxian.(2019).Effects of size and loading rate on the mechanical properties of single coral particles.POWDER TECHNOLOGY,342(-),961-971. |
| MLA | Ma, Linjian,et al."Effects of size and loading rate on the mechanical properties of single coral particles".POWDER TECHNOLOGY 342.-(2019):961-971. |
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。