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| 颗粒材料内部滑动变形局部化的离散元模拟 | |
| 引用本文： | 秦建敏,张洪武. 颗粒材料内部滑动变形局部化的离散元模拟[J]. 计算力学学报, 2011, 28(Z1): 6-9,32 |
| 作者姓名： | 秦建敏 张洪武 |
| 作者单位： | 1. 大连大学,土木工程技术研究与开发中心,大连,116622 2. 大连理工大学,工业装备结构分析国家重点实验室,大连,116024 |
| 摘 要： | 颗粒材料在加载过程中表现出非常复杂的变形性质.在微观尺度上,单个颗粒的运动、单个孔隙胞元内的变形都是非均匀的,但也不是完全随机、没有规律可循的,而是呈现一定结构性的分布,如微带、剪切带等.本文用基于孔隙胞元的离散元方法对颗粒体进行双轴加载数值试验,模拟了以滑动变形表征的变形局部化现象.数值结果发现,对应加载过程中的不同... |
| 关 键 词： | 颗粒材料 离散元 孔隙胞元滑动变形 微带 剪切带 |
DEM simulations on localized slide slide edformation of granular materials |
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| QIN Jian-min,ZHANG Hong-wu. DEM simulations on localized slide slide edformation of granular materials[J]. Chinese Journal of Computational Mechanics, 2011, 28(Z1): 6-9,32 | |
| Authors: | QIN Jian-min ZHANG Hong-wu |
| Affiliation: | QIN Jian-min~(*1),ZHANG Hong-wu~2 (1.Geotechnical & Structural Engineering Institute of Liaoning Province,Dalian University,Dalian 116622,China,2.State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China) |
| Abstract: | Granular materials exhibit very complex behavior under external load.In the micro-scale the motion or deformation of the individual particle and void cell are nonuniform but not random or unrelated.The localized deformation structures appear as micro-bands of small strain and shear bands of large strain.In this paper, quasi-static biaxial compression test is carried out to investigate the structured deformation pattern in microscale using discrete element method(DEM).Localized deformation is found from slid... |
| Keywords: | granular materials discrete element method slide deformation micro-band shear band |
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