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应力主轴旋转下砂土力学特性的数值模拟分析

童朝霞 王勃 左照坤 姚仰平

童朝霞, 王勃, 左照坤, 等 . 应力主轴旋转下砂土力学特性的数值模拟分析[J]. 北京航空航天大学学报, 2015, 41(6): 976-981. doi: 10.13700/j.bh.1001-5965.2014.0434
引用本文: 童朝霞, 王勃, 左照坤, 等 . 应力主轴旋转下砂土力学特性的数值模拟分析[J]. 北京航空航天大学学报, 2015, 41(6): 976-981. doi: 10.13700/j.bh.1001-5965.2014.0434
TONG Zhaoxia, WANG Bo, ZUO Zhaokun, et al. Discrete element simulation of mechanical characteristics of sands under principal stress axes rotation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(6): 976-981. doi: 10.13700/j.bh.1001-5965.2014.0434(in Chinese)
Citation: TONG Zhaoxia, WANG Bo, ZUO Zhaokun, et al. Discrete element simulation of mechanical characteristics of sands under principal stress axes rotation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(6): 976-981. doi: 10.13700/j.bh.1001-5965.2014.0434(in Chinese)

应力主轴旋转下砂土力学特性的数值模拟分析

doi: 10.13700/j.bh.1001-5965.2014.0434
基金项目: 水沙科学与水利水电工程国家重点实验室开放研究基金(sklhse-2014-D-01); 国家"973"计划(2014CB047006); 中央高校基本科研业务费专项资金(YWF-14-JTXY-007)
详细信息
    通讯作者:

    童朝霞(1976—),女,湖南岳阳人,副教授,tongzx@buaa.edu.cn,主要研究方向为岩土本构理论、土动力学与土工抗震等.

  • 中图分类号: TU43

Discrete element simulation of mechanical characteristics of sands under principal stress axes rotation

  • 摘要: 应力主轴旋转条件下砂土等颗粒材料的力学响应与细观组构及演化规律密切相关.通过将离散元数值模拟与室内物理试验在正应变分量发展、剪应力-剪应变关系曲线、体应变发展规律及影响因素等方面进行对比分析,验证了离散元数值模拟的有效性.在此基础上,将颗粒长轴定向组构特征和粒间接触法线组构特征分别用反映组构分布各向异性程度及主方向的变量表示,深入分析了应力主轴旋转条件下颗粒材料组构特征在一个循环周的演化规律,并同时考察了初始孔隙比和应力比对颗粒材料细观组构演化规律的影响.

     

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出版历程
  • 收稿日期:  2014-07-19
  • 刊出日期:  2015-06-20

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