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- W4308522297 abstract "Abstract In this paper, an anisotropic non-associative constitutive model, based on the well-established critical state soil mechanics framework, is developed for the natural and reconstituted clays subjected to monotonic and cyclic loadings. A robust non-elliptical yield surface is implemented in the model which enables it to capture a wide variety of yield stress points. In addition to a realistic soil stiffness simulation, the employed flexible plastic potential surface equips the proposed model to predict a more accurate coefficient of earth pressure at rest. The model uses a combination of conventional volumetric and comprehensive rotational hardening rules to control the evolution of the yield surface caused by plastic strain increments. The adopted rotational hardening rule uses the concept of governing plastic strain increment which not only ensures the existence of the equilibrium state of anisotropy but also takes the effect of plastic strains at different constant stress ratios into account more sensibly. The proposed model is enhanced with a novel double-image stress point bounding surface plasticity type theory to capture nonlinear behaviour inside the yield surface, and also to simulate the cyclic responses. The detailed model formulation is discussed in both triaxial stress space and the $$e-mathrm{ln}, p$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>e</mml:mi> <mml:mo>-</mml:mo> <mml:mi>ln</mml:mi> <mml:mspace /> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> plane, and the important features of the model are elaborately explored. The capabilities of the model are also demonstrated by an extensive sensitivity analysis. In the end, the model is used to carry out simulations of monotonic and cyclic element tests on different clays and the results are compared with the available experimental data." @default.
- W4308522297 created "2022-11-12" @default.
- W4308522297 creator A5063559585 @default.
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- W4308522297 date "2022-11-08" @default.
- W4308522297 modified "2023-10-18" @default.
- W4308522297 title "Double image stress point bounding surface model for monotonic and cyclic loading on anisotropic clays" @default.
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- W4308522297 doi "https://doi.org/10.1007/s11440-022-01705-3" @default.
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