Bifurcation analysis of shear band in sand under true triaxial conditions with hypoplasticity
نویسندگان
چکیده
Predicting the onset of shear band is significance in understanding failure geomaterials. The prediction accuracy dictated by constitutive model used for description pre-bifurcation behaviour. In this study, we first modify a recently proposed hypoplastic incorporating general strength criterion and stiffness function. We proceed to consider sand under true triaxial conditions. demonstrate that our analyses capture stress–strain relationship at different values intermediate principal stress predict fairly well band. acoustic tensor generally adopted elastoplastic approaches inadequate approaches. No special non-coaxial treatment required present approach yield reasonable variation trend bifurcation strain with ratio b.
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ژورنال
عنوان ژورنال: International Journal for Numerical and Analytical Methods in Geomechanics
سال: 2021
ISSN: ['1096-9853', '0363-9061']
DOI: https://doi.org/10.1002/nag.3185