Microscopic study on stress-strain relation of granular materials

查看全文 作　　者：LIU [1]SiHong;YAO [2]YangPing;SUN [3]QiCheng;LI [1]TieJun;LIU [1]MinZhi

机构地区：[1]State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;[2]Department of Civil Engineering, Beihang University, Beijing 100191, China;[3]State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Science Bulletin》索引2009年第54卷第23期,共9页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10672050, 10872016) 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(θ) defining the contacts at particle contact angle θ. 关键词：微观结构应力应变关系颗粒物质颗粒材料各向同性剪切过程离散单元法产量性状

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Microscopic study on stress-strain relation of granular materials

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