| 摘要: |
| 土壤是典型的松散介质,利用粘连的颗粒离散元模型模拟土壤聚团的行成及破裂一直是散体力学的热点之一。本研究详细描述了利用带粘连的颗粒离散元模型制备土壤聚团的方法,利用粘连颗粒离散元模型对土样单轴压缩试验进行数值模拟分析,将模拟结果与试验结果进行对比分析。结果表明:试验与模拟得到的压缩曲线走势吻合,均呈拟线性上升,达到峰值后光滑下降;试验和模拟得到的土壤压缩时的强度极限分别为21.5和24 kPa,模拟值高于试验值11.6%。 |
| 关键词: 离散元法 黏性土壤 单轴压缩 粘连颗粒模型 土壤聚团 |
| DOI：10.11841/j.issn.1007-4333.2009.04.091 |
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| 基金项目:北京林业大学新进青年教师基金资助项目(200-8114) |
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| Comparison study between the soil uniaxial compression test and the discrete element simulation |
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| Abstract: |
| Soil is a typical unconsolidated medium,and it is one of the most popular questions that the simulation for the generation and fracture of soil agglomerate with adhesive particle DEM.In this paper,the methodology for soil agglomerate generated with adhesive particle DEM was introduced.The soil uniaxial compression test was investigated,and the simulation results were compared with the experimental results.As results show,the compression curves of simulation and experiment are in good agreement,and these two... |
| Key words: discrete element method cohesive soil uniaxial compression cohesive particle model soil agglomerate |
