Multidirectional cyclic shearing of clays and sands: Evaluation of two bounding surface plasticity models

Yang, Ming; Seidalinov, Gaziz; Taiebat, Mahdi

doi:10.1016/j.soildyn.2018.05.012

Cited by 23 publications

(11 citation statements)

References 25 publications

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“…The recently developed soil constitutive models that capture a cohesive soil response to cyclic loading are often based on more than one yield surface solution [ 35 , 42 , 43 ]. This approach is correct when a short-term cyclic loading is considered.…”

Section: Damage Mechanism Considerationsmentioning

confidence: 99%

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Głuchowski

Sas

2020

Materials

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Long-term cyclic loading is observed in a wide range of human activities, as well as in nature, such as in the case of ocean waves. Cyclic loading can lead to ratcheting which is defined as progressive accumulation of plastic deformation in a material. Long-term cyclic loading causes a time effect (creep), which is a secondary compression effect. In this article, we conducted 15 triaxial tests on four types of cohesive materials in undrained conditions to evaluate the damage and failure mechanism. To characterize the strain and pore pressure development, we modified the Yanbu resistance concept. On the basis of the static creep tests, we concluded that the stress paths for undrained creep behavior have to take into account the pore pressure developed during long-term cyclic loading. Pore pressure build-up and plastic strain accumulation during long-term cyclic loading are dependent on the number of loading cycles. Finally, we proposed the failure criterion, which was based on the Modified Cam-Clay constitutive model.

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Section: Damage Mechanism Considerationsmentioning

confidence: 99%

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Głuchowski

Sas

2020

Materials

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“…Studying multidirectional shaking in saturated media by means of a numerical approach requires the use of a constitutive model capable of modeling the complexities of wave propagation in a 3D setting. In particular, the soil constitutive model used in the corresponding simulations needs to comply with a number of requirements such as being formulated in the multiaxial space, having mechanisms for reproducing soil stiffness and strength, coupling between volumetric and deviatoric responses, among others [31]. Based on these requirements, the constitutive model selected for this study follows the basic premises of the original two-surface plasticity model developed by Manzari and Dafalias [32] and its sequel by Dafalias and Manzari [33] with a useful fabric-dilatancy quantity, entering the realm of what was later on named SANISAND class of models [34].…”

Section: Constitutive Modelmentioning

confidence: 99%

“…SANISAND has been proven successful in reproducing the monotonic and pre-liquefaction cyclic response of sands for a wide range of pressures and densities under UD shearing in both element and centrifuge testing [e.g., 33,40,[43][44][45]. Regarding BD cyclic shearing, Yang et al [31] presented a detailed evaluation of the model against a large database of BD cyclic shear tests conducted on Monterey No. 0/30 sand by Kammerer et al [10].…”

Section: Constitutive Modelmentioning

confidence: 99%

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Impact of bidirectional seismic shearing on the volumetric response of sand deposits

Reyes

Adinata

Taiebat

2019

Soil Dynamics and Earthquake Engineering

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Numerical simulation results of dry and saturated sand deposits subjected to both unidirectional and bidirectional seismic shearing were carried out and compared to quantify the increase of shear-induced volumetric response during shaking. The engineering demand parameters quantifying such response during the shaking events were considered to be the surface settlement for the dry deposits, and the depth-averaged peak excess pore water pressure and thickness of the liquefied layer for the saturated deposits. The numerical simulations made use of a three-dimensional continuum, coupled, dynamic, finite-difference platform and an anisotropic bounding surface plasticity constitutive model. Results of a series of centrifuge tests on saturated level ground sand deposits subjected to bidirectional shearing were used to validate the model capabilities for capturing the volumetric response of sand deposits. Over 1000 simulations were carried out in this study on homogeneous sand deposits with different densities and subjected to ground motions applied as uni-and bidirectional shearing. The dry models exhibited an 80% increase of surface settlement and in the saturated models depthaveraged peak excess pore water pressure ratios were up to 60% higher. Moreover, for the loose to medium dense 30 m-deep uniform deposits, the liquefied sand layers were in average 5-6 m thicker. These outcomes highlight the need to account for bidirectional seismic shearing when predicting the shear-induced volumetric response of sand deposits and related damaging phenomena such as liquefaction or seismic-induced settlement, among others. Furthermore, the simulation results shown the necessity for defining optimal ground motion intensity measures to characterize and scale ground motions for bidirectional shearing.

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“…Among the various constitutive models considered for the dynamic response of soils, bounding surface plasticity models have received considerable attention in recent years. [14][15][16] This is primarily due to its unique way of formulating the plastic deformation such that the salient features of hysteretic soil behavior under cyclic loading are captured. Dafalias and Popov 17 first presented the idea of bounding surface plasticity.…”

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confidence: 99%

On the implementation and validation of a three‐dimensional pressure‐dependent bounding surface plasticity model for soil nonlinear wave propagation and soil‐structure interaction analyses

Zhang

Lim²,

Ghahari

et al. 2021

Num Anal Meth Geomechanics

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Numerous experiments and prior analyses have confirmed that soil inelasticity, which is known to come into effect even at very low strain levels, can significantly affect site response and dynamic soil‐structure interaction (SSI) behavior. To date, only a few studies were able to consider multi‐axial wave propagation problems with appropriate models of soil nonlinearity. Most existing works are limited to either homogeneous soil configurations or equivalent linear soil models. The instances wherein soil nonlinearity is accurately considered have been confined to single element tests and one‐dimensional problems. In this study, an improved pressure‐dependent bounding surface plasticity soil model—with appropriate plastic strain rate direction definition and overshooting correction scheme—is implemented in Abaqus, and validated using recordings from both the Lotung borehole array and centrifuge test data on embedded flexible structures. The implemented model is capable of comprehensively reproducing complex soil behaviors, such as stiffness degradation, damping, dilatancy, and compaction while under a wide strain range, and under general loading conditions using only a few material parameters to be calibrated. Consequently, numerically predicted results are observed to be in better agreement with experimentally measured data, in comparison with linear and another plasticity model, which include accelerations, and bending and hoop strains along the walls of the specimen structures, for low‐ as well as high‐amplitude input motions.

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Multidirectional cyclic shearing of clays and sands: Evaluation of two bounding surface plasticity models

Cited by 23 publications

References 25 publications

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Long-Term Cyclic Loading Impact on the Creep Deformation Mechanism in Cohesive Materials

Impact of bidirectional seismic shearing on the volumetric response of sand deposits

On the implementation and validation of a three‐dimensional pressure‐dependent bounding surface plasticity model for soil nonlinear wave propagation and soil‐structure interaction analyses

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