Numerical Investigation of Mineral Grain Shape Effects on Strength and Fracture Behaviors of Rock Material
文献类型：期刊论文
| 作者 | Han, Zhenhua1,2,3; Zhang, Luqing1,2; Zhou, Jian1,2 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2019-07-02 |
| 卷号 | 9期号:14页码:14 |
| 关键词 | mineral grain shape particle flow code uniaxial compression simulation rock mechanical property |
| DOI | 10.3390/app9142855 |
| 英文摘要 | Rock is an aggregate of mineral grains, and the grain shape has an obvious influence on rock mechanical behaviors. Current research on grain shape mostly focuses on loose granular materials and lacks standardized quantitative methods. Based on the CLUMP method in the two-dimensional particle flow code (PFC2D), three different grain groups were generated: strip, triangle, and square. Flatness and roughness were adopted to describe the overall contour and the surface morphology of the mineral grains, respectively. Simulated results showed that the grain shape significantly affected rock porosity and further influenced the peak strength and elastic modulus. The peak strength and elastic modulus of the model with strip-shaped grains were the highest, followed by the models with triangular and square grains. The effects of flatness and roughness on rock peak strength were the opposite, and the peak strength had a significant, positive correlation with cohesion. Tensile cracking was dominant among the generated microcracks, and the percentage of tensile cracking was maximal in the model with square grains. At the postpeak stage, the interlocking between grains was enhanced along with the increased surface roughness, which led to a slower stress drop. |
| WOS关键词 | BONDED-PARTICLE MODEL ; COMPRESSIVE STRENGTH ; FAILURE ; FRICTION ; POROSITY ; HETEROGENEITY ; PROPAGATION ; SANDSTONE ; SIZE |
| 资助项目 | National Natural Science Foundation of China[41572312] ; National Natural Science Foundation of China[41672321] ; China Postdoctoral Science Foundation[2018M630204] ; China Postdoctoral Science Foundation[2019T120133] ; China Scholarship Council[201804910293] |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000479026900082 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/93336]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Han, Zhenhua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Zhenhua,Zhang, Luqing,Zhou, Jian. Numerical Investigation of Mineral Grain Shape Effects on Strength and Fracture Behaviors of Rock Material[J]. APPLIED SCIENCES-BASEL,2019,9(14):14. |
| APA | Han, Zhenhua,Zhang, Luqing,&Zhou, Jian.(2019).Numerical Investigation of Mineral Grain Shape Effects on Strength and Fracture Behaviors of Rock Material.APPLIED SCIENCES-BASEL,9(14),14. |
| MLA | Han, Zhenhua,et al."Numerical Investigation of Mineral Grain Shape Effects on Strength and Fracture Behaviors of Rock Material".APPLIED SCIENCES-BASEL 9.14(2019):14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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