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An anisotropic hardening elastoplastic model for clays and sands and its application to FE analysis
The Sekiguchi-Ohta model is extended to be a unified three-dimensional elastoplastic model for clays, silts and sands by introducing a transformed stress tensor sigmaij and a new hardening parameter H. The model can describe the negative and positive dilatancy of soils with an initially stress-induced anisotropy in three-dimensional (3D) stress. An elastoplastic constitutive tensor is derived for the application of the proposed model to finite element (FE) analyses. A FE analysis example for a test embankment is given and the result demonstrates that the proposed model can predict reasonably the deformation of anisotropically consolidated clay and sand layers under embankment loading.
An anisotropic hardening elastoplastic model for clays and sands and its application to FE analysis
The Sekiguchi-Ohta model is extended to be a unified three-dimensional elastoplastic model for clays, silts and sands by introducing a transformed stress tensor sigmaij and a new hardening parameter H. The model can describe the negative and positive dilatancy of soils with an initially stress-induced anisotropy in three-dimensional (3D) stress. An elastoplastic constitutive tensor is derived for the application of the proposed model to finite element (FE) analyses. A FE analysis example for a test embankment is given and the result demonstrates that the proposed model can predict reasonably the deformation of anisotropically consolidated clay and sand layers under embankment loading.
An anisotropic hardening elastoplastic model for clays and sands and its application to FE analysis
Sun, D.A. (author) / Matsuoka, H. (author) / Yao, Y.P. (author) / Ishii, H. (author)
Computers and Geotechnics ; 31 ; 37-46
2004
10 Seiten, 21 Quellen
Article (Journal)
English
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