物理学报2017，Vol.66Issue(10)：166-173,8.DOI:10.7498/aps.66.104501
颗粒固体应力转向比的光弹法探测
Janssen ratio in granular solid measured by photoelastic method
摘要
Abstract
In this work Janssen ratio is measured in a dense granular pack.The pressure on the side walls as a function of the depth of the pack with top load under gravity is measured by photoelastic method.The samples are prepared by "point source" method with and without tapping.A non-monotonic distribution of the side pressure along the depth is found.Numerical simulation is performed and shows qualitative consistency with the experimental finding.The apparent weight of the sample is measured for different filling heights and for different top loads.Comparing with the normal stresses on the silo wall for different heights,we obtain the Janssen ratio J =σxx/σzz as a function of height.We find that although uJ =0.11 is a constant as is expected,the Janssen Ratio is height dependent.It becomes height independent only when the top load is large enough.关键词
颗粒固体/光弹法/转向比Key words
granular solid/photoelastic method/Janssen ratio引用本文复制引用
宗谨,周志刚,王文广,张晟,林平,石玉仁,厚美瑛..颗粒固体应力转向比的光弹法探测[J].物理学报,2017,66(10):166-173,8.基金项目
国家自然科学基金(批准号:11274354,11474326,11565021)、中国科学院空间科学战略性先导科技专项(批准号:XDA04020200)和地震行业科研经费(批准号:201208011)资助的课题.Project supported by the National Natural Science Foundation of China (Grant Nos.11274354,11474326,11565021),the "Strategic Priority Research Program-SJ-10" of the Chinese Academy of Sciences (Grant No.XDA04020200),and the Special Fund for Earthquake Research of China (Grant No.201208011). （批准号:11274354,11474326,11565021）
