%0 Journal Article
%T Microscopic study on stress-strain relation of granular materials<br>基于细观结构的颗粒介质应力应变关系研究
%A LIU SiHong
%A YAO YangPing
%A SUN QiCheng
%A LI TieJun & LIU MinZhi College of Water Conservancy
%A Hydropower Engineering
%A Hohai University
%A Nanjing
%A China
%A <br>刘斯宏
%A 姚仰平
%A 孙其诚
%A 李铁军
%A 刘敏芝
%J 科学通报
%D 2009
%I 
%X A biaxial compression test on granular materials is numerically simulated by discrete 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 is similar to the modified Cam-clay model and explains the yield behaviors of granular materials under isotropic compression and shearing by the distribution of the contact angles of particles.
%K DEM
%K granular material
%K yield surface
%K microstructure<br>DEM
%K 颗粒介质
%K 屈服面
%K 细观结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=7C7E63796F062382A606A3A9833B8C05&jid=B40D4BA57FF46E45205A09B4DC283152&aid=9AA7E6190BBCD24A9A13BBF83782F8D3&yid=DE12191FBD62783C&vid=318E4CC20AED4940&iid=708DD6B15D2464E8&sid=592CC3414B588215&eid=D6ABCD9C81633DC2&journal_id=0023-074X&journal_name=科学通报&referenced_num=4&reference_num=0