Effects of particle shape on triaxial compression behaviours of realistic ballast particles based on M-A-V-L particle shape evaluation system
文献类型：期刊论文
| 作者 | Zhao, Lianheng1,3,6; Deng, Min6; Zhang, Shuaihao6; Huang, Dongliang6; Qiao, Nan6; Gong, Jian2,4,5 |
| 刊名 | GRANULAR MATTER
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 25期号:1页码:- |
| 关键词 | DEM modelling Particle shape Railway ballast Triaxial compression Fabric anisotropy |
| ISSN号 | 1434-5021 |
| 英文摘要 | The particle shape has a significant influence on the mechanical behaviour of granular materials. Based on a new particle shape evaluation system M-A-V-L, this paper studies the effect of the M-value (a particle shape index) on the macro and micro triaxial compression behaviours of granular material via DEM modelling. Firstly, 1500 digital models of realistic ballast particles were obtained by white-light scanning. Then, the M-values of all the particles were calculated, and five groups of particles with different M-values (M = 1.5, 2.0, 2.5, 3.0, 3.5) were selected. There are five particles in each group. Subsequently, the evolution of macro and micro mechanical behaviours (such as void ratio, deviatoric stress ratio, coordination number, etc.) for samples with different M-values were analysed based on triaxial compression tests. Moreover, the relationship between M-values and mechanical behaviours for samples at both peak state and critical state were studies. Finally, by analysing the stress-force-fabric (SFF) relationship, the origin of shear strength related to M-values was revealed from the perspective of the fabric anisotropy. |
| 学科主题 | Materials Science ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000914593600005 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35245]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Key Laboratory of Heavy-Haul Railway Engineering Structure, Ministry of Education, Central South University, Changsha 410075, Hunan, China 2.School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, Guangxi, China 3.Hunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering Structures, Central South University, Changsha 410075, Hunan, China 4.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 5.Hualan Design and Consulting Group, Nanning 530011, Guangxi, China 6.School of Civil Engineering, Central South University, Changsha 410075, Hunan, China |
| 推荐引用方式 GB/T 7714 | Zhao, Lianheng,Deng, Min,Zhang, Shuaihao,et al. Effects of particle shape on triaxial compression behaviours of realistic ballast particles based on M-A-V-L particle shape evaluation system[J]. GRANULAR MATTER,2023,25(1):-. |
| APA | Zhao, Lianheng,Deng, Min,Zhang, Shuaihao,Huang, Dongliang,Qiao, Nan,&Gong, Jian.(2023).Effects of particle shape on triaxial compression behaviours of realistic ballast particles based on M-A-V-L particle shape evaluation system.GRANULAR MATTER,25(1),-. |
| MLA | Zhao, Lianheng,et al."Effects of particle shape on triaxial compression behaviours of realistic ballast particles based on M-A-V-L particle shape evaluation system".GRANULAR MATTER 25.1(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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