Numerical simulations of granular soil using elliptical particles
Numerical simulations of granular soil using elliptical particles
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DOI：
10.1016/0266-352x(94)90019-1
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发表时间：
1994
影响因子：
5.3
通讯作者：
T. Ng
中科院分区：
文献类型：
--
作者：
T. Ng
采用离散单元法对圆形和椭圆形颗粒随机排列的理想颗粒土进行了二维数值试验研究。开发了一个新的程序ELLIPSE 2，并用于显示粒状土在单调排水压缩荷载和循环等体积荷载下的应力-应变特性，在不同的剪应变（10 - 6至10 - 3）。在这些数值模拟中，粒状土壤由弹性粗糙石英颗粒的二维随机阵列表示。随机阵列由圆形和椭圆形颗粒的混合物组成。数值计算结果与实际砂土的实验数据进行了比较，吻合良好。这些结果是非常令人鼓舞的，并清楚地显示了一个程序，如ELLIPSE 2研究粒状土壤行为的潜力。
Two-dimensional numerical experiments on a random array of circular and elliptical particles were performed using the discrete element method (DEM) to study the behavior of idealized granular soil. A new program called ELLIPSE2 was developed and used to show the stress-strain behavior of granular soil under monotonic drained compressive loading and cyclic constant volume loading at various shear strains (10−6to 10−3). In these numerical simulations, the granular soil was represented by a 2-D random array of elastic, rough quartz particles. The random array consists of a mixture of circular and elliptical particles. The numerical results were compared with available experimental data on actual sands with good agreement. These results are extremely encouraging and clearly show the potential of a program such as ELLIPSE2 for studying granular soil behavior.