The Onset of Strain Localization in Cross-Anisotropic Soils Under True Triaxial Condition

作者: Xilin Lu , Maosong Huang , Jiangu Qian

DOI: 10.3208/SANDF.51.693

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摘要: ABSTRACT The influences of inherent cross-anisotropy on soil strength the homogeneous deformation and bifurcation characteristic stress-strain relationship are studied. By neglecting cohesion term employing an elliptical shape function in Mohr-Coulomb failure criterion, a 3D anisotropic criterion is proposed to describe cross-anisotropic sands under true triaxial conditions. Based influence parameter curve deviatoric plane between peak friction angle intermediate principal stress ratio obtained. suitability justified by comparing with series tests without strain localization. adopted build three dimensional elasto-plastic model, which allows analysis be incorporated non-coaxial flow rule for purpose studying onset Compared several ratios conditions literature, model shown capable predicting

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