Micromechanics-based multimechanism bounding surface model for sands

Fang, Huolang; Zheng, Huarong; Zheng, Jinyang

doi:10.1016/j.ijplas.2017.01.011

Cited by 23 publications

(6 citation statements)

References 77 publications

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“…Candidate classical constitutive models include the following: the Cambridge model, the Duncan-Chang hyperbolic nonlinear elastic model, the Lade-Duncan elastic-plastic model [20], Matsuoka and Nakai's spatial mobilised plane [21], the multiple yield surface model [22][23][24][25], and the nonlinear K-G model [26]. Because each constitutive model has its own scope of application and each material has its own complexity, corrections must be made to the models, depending on the conditions.…”

Section: Research Status In China and Elsewherementioning

confidence: 99%

An Analysis of the Mechanical Characteristics and Constitutive Relation of Cemented Mercury Slag

Zhang

et al. 2017

Advances in Materials Science and Engineering

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This study focuses on mercury slag in the Tongren area of Guizhou Province, China. Computed tomography (CT) is used with uniaxial and triaxial compression tests to examine the mechanical changes in cemented mercury slag and its formation. The CT results for the uniaxial compression test reveal the overall failure process of the mercury slag structure. Based on the coarse-grained soil triaxial test, a modified Duncan-Chang model is compared with the actual monitoring results and is found to be suitable for the analysis of the slag constitutive model.

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Section: Research Status In China and Elsewherementioning

confidence: 99%

An Analysis of the Mechanical Characteristics and Constitutive Relation of Cemented Mercury Slag

Zhang

et al. 2017

Advances in Materials Science and Engineering

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“…Introducing the fabric tensor to the model formulation, they have simulated a wide range of monotonic tests, including drained and undrained conditions under various load directions. The above-mentioned SANISAND models are also adopted for the multi mechanism method by Fang et al 29,30 As a result of the complicated material response as well as the scarcity of experimental data, constitutive modeling of granular materials under stress PA rotation has not been adequately developed so far. Although a number of constitutive models are developed in this context, [31][32][33][34][35][36][37] they can roughly be accepted as comprehensive solutions.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Upgrading SANISAND model to address continuous stress principal axis rotation: A conservative approach

Shahrokhi

Barani

2022

Num Anal Meth Geomechanics

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The SANISAND models are known for their ability to simulate sands behavior with various properties under a wide range of loadings. Nevertheless, there is much room for improvement in simulating stress principal axis (PA) rotation effects. This study tried to address the continuous stress PA rotation problem following a conservative approach in preserving the SANISAND basic formulation.The inelastic response of the material under the stress rotation is regulated by a plastic intensity index as a function of the stress rotation rate with respect to the deviatoric fabric tensor and the non-coaxiality between the stress and the plastic strain rate. The model performance is verified compared to the experimental data as well as other constitutive models. Supplementary discussions are provided to shed light on how fabric evolution results in a lower degree of anisotropy under continuous stress PA rotation. Based on continuum bounding surface plasticity, the proposed model addresses the fabric anisotropy effects on the severity of plasticity under continuous stress PA rotation.

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“…The description of cyclic mobility requires one of the most sophisticated formulations in the constitutive modeling. Numerous research reports have been published on the cyclic mobility, e.g., Zienkiewicz et al [81], Mroz et al [51], Prevost and Keane [59], Desai et al [8], Elgamal et al [10], Fang et al [11], Hashiguchi and Chen [34], Oka et al [60], Zhang et al [72], Hashiguchi [30], etc., within the framework of the elastoplasticity and Zienkiewicz et al [82], Iai et al [44], Akiyoshi et al [1], Gerolymos and Gazetas [17], Zhang and Wang [73] by the empirical approaches. These extensive research efforts have made significant contribution toward elucidating the fundamental mechanism and establishing accurate prediction methods for cyclic mobility.…”

Section: Introductionmentioning

confidence: 99%

Elaborated subloading surface model for accurate description of cyclic mobility in granular materials

Hashiguchi¹,

Mase

Yamakawa

2021

Acta Geotech.

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The description of the cyclic mobility observed prior to the liquefaction in geomaterials requires the sophisticated constitutive formulation to describe the plastic deformation induced during the cyclic loading with the small stress amplitude inside the yield surface. This requirement is realized in the subloading surface model, in which the surface enclosing a purely elastic domain is not assumed, while a purely elastic domain is assumed in other elastoplasticity models. The subloading surface model has been applied widely to the monotonic/cyclic loading behaviors of metals, soils, rocks, concrete, etc., and the sufficient predictions have been attained to some extent. The subloading surface model will be elaborated so as to predict also the cyclic mobility accurately in this article. First, the rigorous translation rule of the similarity center of the normal yield and the subloading surfaces, i.e., elastic core, is formulated. Further, the mixed hardening rule in terms of volumetric and deviatoric plastic strain rates and the rotational hardening rule are formulated to describe the induced anisotropy of granular materials. In addition, the material functions for the elastic modulus, the yield function and the isotropic hardening/softening will be modified for the accurate description of the cyclic mobility. Then, the validity of the present formulation will be verified through comparisons with various test data of cyclic mobility.

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Micromechanics-based multimechanism bounding surface model for sands

Cited by 23 publications

References 77 publications

An Analysis of the Mechanical Characteristics and Constitutive Relation of Cemented Mercury Slag

An Analysis of the Mechanical Characteristics and Constitutive Relation of Cemented Mercury Slag

Upgrading SANISAND model to address continuous stress principal axis rotation: A conservative approach

Elaborated subloading surface model for accurate description of cyclic mobility in granular materials

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