Multi-dimensional consolidation analysis of transversely isotropic viscoelastic saturated soils

Ai, Zhi Yong; Zhao, Yong Zhi; Song, Xiaoyu; Mu, Jin Jing

doi:10.1016/j.enggeo.2019.02.022

Cited by 28 publications

(17 citation statements)

References 45 publications

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“…4. We adjusted the model of the layer-wise deformation of soil profile in the contact area «soil -the surface of an elastic wheeled mover of the mobile vehicle» based on the distribution of stresses in line with the symmetrical channel model by I. I. Kandaurov [10], which is shown in Fig. 5.…”

Section: Substantiation Of the Methods For A Graph-analytical Study Ofmentioning

confidence: 99%

“…where b is the track's width, mm; x is the horizontal coordinate along the bottom of the track with a coordinate origin along the mover's axis; θ ≠ 0 is a parameter that generalizes the rheological properties of a specific soil (module of elasticity, ductility module, transverse deformation coefficient, structural strength limit). In this case, as a separate case, equation (9) takes the form of a Gaussian curve -the curve of normal distribution, as evidenced by the results of numerous number of field experiments [10]: Changing a shape of the contact line «soil -the surface of an elastic wheeled mover of the mobile vehicle» in the vertical transverse plane of the soil profile, predetermined by a decrease in the a/c parameter from a/c = 1.7 to a/c = 1.1, leads to an increase in the contact width d from 0 to 1.32b.…”

Section: Modelling Values Of the Levels Of Layer-wise Soil Compactmentioning

confidence: 97%

“…Phenomenological modelling of soil deformation processes with the idealized mechanical-technological properties employs different models of rheological bodies, most acceptable of which is the rheological elastic-plastic Prandtl's body [10,11], whose model is shown in Fig. 1.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Consequently, the processes of soil deformation are essentially physically nonlinear processes. Physical nonlinearity of the processes of soil deformation predetermines the need to apply the rheological quasi-linear equations with adjustable coefficients [10]. It was established in work [13] that the physical nonlinearity of soil deformation predetermines geometric nonlinearity, which implies the existence of deformations of second and higher orders of smallness, for cases of macro-deformation of soil.…”

Section: Fig 2 Idealized Advancement Of Prandtl's Diagrammentioning

confidence: 99%

“…12): (11) where θ 0 is the angle of internal soil friction for specific physical and mechanical and agro-technological properties; j hmin is the angle between the tangent to the contact line's curve «soil -the surface of an elastic wheeled mover of the mobile vehicle» at point M and a horizontal surface of the soil. We assessed the adequacy of the devised graphic models based on the comparison of the measure of the principal part of deformation using the experiment results and the measure of the principal part of deformation according to the criteria by Genkie and Swinger [10]:…”

Section: Defining Basic Geometric Parameters Of the Character Of Smentioning

confidence: 99%

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Graph-analytical optimization of the transverse vertical cross-section of a contact zone between soil and an elastic wheeled mover

Sheludchenko

Šarauskis

Golub

et al. 2019

EEJET

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Інтенсифікація сільськогосподарського виробництва в сучасних умовах передбачає застосування надпотужних мобільних технічних засобів, що призводить до підвищення рівнів техногенного впливу на ґрунт і, як наслідок, погіршення його родючості. Тому, найактуальніший запит сучасного аграрного виробництва спрямований на вирішення проблеми покращення експлуатаційних показників роботи колісних ходових систем мобільних технічних засобів. Це спонукає до необхідності аналітичного дослідження процесів деформування ґрунту під еластичними рушіями мобільної колісної техніки сільськогосподарського призначення. Запропонована методика графо-аналітичного поетапного моделювання процесу деформування ґрунту під пневматичними шинами рушіїв мобільної сільськогосподарської техніки з урахуванням змінюваної форми еластичної оболонки шини. Використання відповідних графічних моделей дозволяє поетапно досліджувати процес ущільнення ґрунту у профілі утворюваної ним колії. Встановлено, що в зоні контакту «деформований ґрунт-поверхня еластичного колісного рушія мобільного засобу» найвищий рівень ущільнення спостерігається в шарі ґрунту, який безпосередньо контактує з еластичним рушієм. Глибина переущільненого шару ґрунту на «дні колії» залежить від типорозміру шини колісного рушія і не перевищує значення 0,075 ширини шини. Найвищий рівень переущільнення ґрунту спостерігається в зоні, яка є безпосередньо прилеглою до осі колії. Визначено, що найнебезпечнішою конструкцією пневматичної шини, з точки зору переущільнення ґрунту в колії, є форма еластичної оболонки шини, яка описується кривою овалу Кассіні з чотирма точками перегину. Окреслено характерні особливості рекомендацій щодо визначення експлуатаційних значень робочого тиску у шинах залежно від конкретних фізико-механічних та агротехнологічних властивостей ґрунту і характеру виконуваних технологічних операцій Ключові слова: ущільнення ґрунту, еластичний деформатор, поле сил тиску, нелінійність деформування ґрунту

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Section: Substantiation Of the Methods For A Graph-analytical Study Ofmentioning

confidence: 99%

Section: Modelling Values Of the Levels Of Layer-wise Soil Compactmentioning

confidence: 97%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Fig 2 Idealized Advancement Of Prandtl's Diagrammentioning

confidence: 99%

Section: Defining Basic Geometric Parameters Of the Character Of Smentioning

confidence: 99%

See 3 more Smart Citations

Graph-analytical optimization of the transverse vertical cross-section of a contact zone between soil and an elastic wheeled mover

Sheludchenko

Šarauskis

Golub

et al. 2019

EEJET

View full text Add to dashboard Cite

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Semi‐analytical analysis of fractional derivative rheological consolidation considering the effect of self‐weight stress

Ding

et al. 2021

Num Anal Meth Geomechanics

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Studies have revealed that rheological characteristics and self‐weight stress are nonnegligible during a consolidation process, especially for land reclamation projects or dredged soils. However, they are rarely considered simultaneously in traditional consolidation theories. This paper presents a general solution to the consolidation system of rheological soils that incorporates a fractional derivative model and self‐weight stress. First, the theory of the fractional derivative is introduced to the Merchant model to describe the consolidation behaviours of rheological soils, and the self‐weight stress of soils is simultaneously considered. Based on this model, the governing equation of a rheological consolidation system that considers self‐weight stress is obtained. Second, the analytical solutions of the effective stress and settlement in the Laplace domain are obtained by applying the Laplace transform to the consolidation governing equation. Further, the actual solutions in the real domain are obtained by a numerical Laplace transform inversion method (Abate's fixed Talbot method). Finally, the reliability and correctness of the consolidation theories and the proposed solutions are verified by comparing the calculated results with the degenerate solutions and experimental results in the existing literature. Furthermore, parametric studies are conducted to investigate the influence of rheological parameters and self‐weight parameters on the consolidation settlement and consolidation rate.

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Rheological consolidation analysis of saturated clay ground under cyclic loading based on the fractional order Kelvin model

Wang,

Chen,

Liu

et al. 2024

Num Anal Meth Geomechanics

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Based on Biot porous medium theory, considering the coupled reaction of soil skeleton rheology and pore pressure dissipation, the present work investigates the dynamic consolidation characteristics of saturated clay ground under cyclic loading. First, the rheological behavior of the soil skeleton was described by the fractional order Kelvin model. The dynamic consolidation governing equations for the saturated clay were established theoretically in a three‐dimensional axisymmetric coordinate system. Second, the transform domain analytical solution of the dynamic consolidation of saturated clay was obtained using the Hankel–Laplace coupled transform method, and the solution in the time–space domain was further obtained through numerical inversion. Finally, the rheological consolidation behavior of saturated clay under cyclic loading and the influences of parameters were analyzed. The results show that the rheology of the soil skeleton had an inhibitory effect on pore water permeability; compared with elastic skeleton soil, the rheological clay had a slower settlement rate in the primary consolidation stage, a faster rate in the secondary consolidation stage, and greater long‐term settlement. In addition, under cyclic loading, the pore pressure response in saturated clay lags behind the effective stress, and a larger viscous order is associated with faster development of cumulative settlement.

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Multi-dimensional consolidation analysis of transversely isotropic viscoelastic saturated soils

Cited by 28 publications

References 45 publications

Graph-analytical optimization of the transverse vertical cross-section of a contact zone between soil and an elastic wheeled mover

Graph-analytical optimization of the transverse vertical cross-section of a contact zone between soil and an elastic wheeled mover

Semi‐analytical analysis of fractional derivative rheological consolidation considering the effect of self‐weight stress

Rheological consolidation analysis of saturated clay ground under cyclic loading based on the fractional order Kelvin model

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