Microscopic study on stress-strain relation of granular materials

被引：10
作者：
Liu SiHong [1 ]
Yao YangPing [2 ]
Sun QiCheng [3 ]
Li TieJun [1 ]
Liu MinZhi [1 ]
机构：
[1] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Peoples R China
[2] Beihang Univ, Dept Civil Engn, Beijing 100191, Peoples R China
[3] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2009年 / 54卷 / 23期
基金：
中国国家自然科学基金;
关键词：
DEM; granular materials; yield surface; microstructure; COLLAPSE; SOIL;
D O I：
10.1007/s11434-009-0599-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A biaxial shearing test on granular materials is numerically simulated by distinct element method (DEM). The evolution of the microstructures of granular materials during isotropic compression and shearing is investigated, on which a yield function is derived. The new yield function has a similar form as the one used in the modified Cam-clay model and explains the yield characteristics of granular materials under the isotropic compression and shear process through the change of the contact distribution N(theta) defining the contacts at particle contact angle theta.
引用
收藏
页码：4349 / 4357
页数：9
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