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Study on the Initiation of Strain Localization in Soils by 3D Non-coaxial Plasticity
The strain localization in soil under plane strain and true triaxial conditions were predicted by bifurcation analysis on the non-coaxial plasticity. By using an elliptical shape function to modify the Mohr-Coulomb failure criterion, a 3D non-coaxial non-associated elasto-plasticity model was proposed by adding a non-coaxial plasticity flow rule. Comparing to the experiments, bifurcation analysis on the non-coaxial model gives out better prediction than the coaxial models. Strain localization occurs at the hardening regime of the soil under plane strain condition, the influence of confining stress on the strain localization could be described by non-coaxial model rightly. The prediction of true triaxial tests showed the non-coaxial model reflects the influence of the intermediate stress ratio on strain localization well.
Study on the Initiation of Strain Localization in Soils by 3D Non-coaxial Plasticity
The strain localization in soil under plane strain and true triaxial conditions were predicted by bifurcation analysis on the non-coaxial plasticity. By using an elliptical shape function to modify the Mohr-Coulomb failure criterion, a 3D non-coaxial non-associated elasto-plasticity model was proposed by adding a non-coaxial plasticity flow rule. Comparing to the experiments, bifurcation analysis on the non-coaxial model gives out better prediction than the coaxial models. Strain localization occurs at the hardening regime of the soil under plane strain condition, the influence of confining stress on the strain localization could be described by non-coaxial model rightly. The prediction of true triaxial tests showed the non-coaxial model reflects the influence of the intermediate stress ratio on strain localization well.
Study on the Initiation of Strain Localization in Soils by 3D Non-coaxial Plasticity
Springer Ser.Geomech.,Geoengineer.
Chau, Kam-Tim (editor) / Zhao, Jidong (editor) / Lu, Xilin (author) / Qian, Jianju (author) / Huang, Maosong (author)
International Workshop on Bifurcation and Degradation in Geomaterials ; 2014 ; Hong Kong, Hong Kong
Bifurcation and Degradation of Geomaterials in the New Millennium ; Chapter: 32 ; 221-228
2014-12-30
8 pages
Article/Chapter (Book)
Electronic Resource
English
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