The strength-dilatancy characteristics embraced in hypoplasticity  

作　　者：Zhongzhi FU Sihong LIU Zijian WANG 

机构地区：[1]Geotechnical Engineering Department,Nanjing Hydraulic Research Institute,Nanjing 210024,China [2]College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China

出　　处：《Frontiers of Structural and Civil Engineering》2013年第2期178-187,共10页结构与土木工程前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.51209141 and 51179059);the Fund for Young Scientists in the Nanjing Hydraulic Research Institute(No.Y312004).

摘　　要：The strength-dilatancy characteristics of frictional materials embraced in the hypoplastic model proposed by Gudehus and Bauer are investigated and compared with the revised model suggested by Huang.In the latter the deviatoric stress in the model by Gudehus and Bauer is replaced by a transformed stress according to the stress transformation technique proposed by Matsuoka.The flow rule,the failure state surface equation and the strengthdilatancy relationship embraced in both models are derived analytically.The performance of the two hypoplastic models in reproducing the relationship between the peak strength and the corresponding dilation rate under triaxial compression,plane compression and plane shearing are then extensively investigated and compared with experimental results and with the predictions made by particular classical stress-dilatancy theories.Numerical investigations show that the performance in reproducing the strength-dilatancy relationship is quite satisfactory under triaxial compression stress state in both models and the predictions made by the transformed stress based model are closer to the results obtained from classical stress-dilatancy theories for plane compression and plane shearing problems.

关 键 词：STRENGTH DILATANCY HYPOPLASTICITY frictional materials 

分 类 号：O57[理学—粒子物理与原子核物理]