农业机械学报2011，Vol.42Issue(11)：44-48,5.
圆锥指数仪贯入沙土试验的离散元法模拟
Discrete Element Simulations of the Cone Penetration Tests in Sandy Soil
摘要
Abstract
The simulative study with discrete element method for the cone penetration into the sandy soil was investigated. The results of the simulations and the tests are in good agreement, and the friction on the cone side surface has little influence on the penetration resistance. The conclusion of DEM shows that the strong force chain is located at the cone tip, where the directions of particle velocities are in disorder, while the particles in other place are almost stabile. The penetration resistance increased as the increase of penetration depth, and the normal pressure on the side wall of the soil bin. However, the penetration velocity has little influence on the penetration resistance.关键词
圆锥指数仪/贯入/沙土/离散元法Key words
Cone penetrometer/Penetration/Sandy soil/Discrete element method分类
数理科学引用本文复制引用
李艳洁,林剑辉,徐泳..圆锥指数仪贯入沙土试验的离散元法模拟[J].农业机械学报,2011,42(11):44-48,5.基金项目
国家自然科学基金资助项目(30800665)和中央高校基本科研业务费专项资金资助项目(YX2010-6) （30800665）
