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Title :EXTENDED TANGENTIAL-SUBLOADING SURFACE MODEL FOR GENERAL LOADING BEHAVIOR OF SOILS : APPLICATION TO NONPROPORTIONAL LOADINGS
Authors :Setouchi, Hideki
Hashiguchi, Koichi
Shikanai, Takeshi
Okayasu, Takashi
Issue Date :Aug-2006
Abstract :The conventional elastoplastic model premising that the interior of yield surface is a purely elastic domain is incapable of describing the plastic deformation by the rate of stress inside the yield surface. Thus, it is inapplicable to the description of cyclic loading behavior. Besides, the traditional elastoplastic model is independent of the stress rate component tangential to the yield surface. Therefore, it predicts an unrealistically high stiffness modulus for nonproportionalloading process deviating significantly from proportional one. The extended tangential-subloading surface model proposed by Hashiguchi and Tsutsumi (2001) would be capable of describing the cyclic loading behavior and the inelastic strain rate induced by the stress rate component tangential to the subloading surface. In this article, the extended tangential-subloading surface model is applied to the prediction of deformation behavior of sands subjected to various loading ranging from proportional to cyclic nonproportionalloading. The validity is verified by comparing with the various test data. Then, it is revealed that the incorporation of the strain rate due to the stress rate component tangential to the subloading surface is of importance for the description of nonproportional loading behavior.
Type Local :雑誌掲載論文
ISSN :0038-0806
Publisher :公益社団法人地盤工学会
URI :http://hdl.handle.net/20.500.12000/36946
Citation :Soils and Foundations Vol.46 no.4 p.449 -463
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Agriculture)

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