A fractional order creep constitutive model of warm frozen silt

Liao, Mengke; Lai, Yuanming; Liu, Enlong; Wan, Xusheng

doi:10.1007/s11440-016-0466-4

Cited by 70 publications

(14 citation statements)

References 22 publications

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“…52,53 This led to the development of a new formalism for the modelling of viscoelastic materials known as fractional viscoelasticity. Fractional viscoelasticity has been applied to complex geological and construction materials such as bitumen (asphalt), 44,45 concrete, 42,43 rock mass, [54][55][56][57][58][59] waxy crude oil, 60,61 as well as polymers and gels, 41,[62][63][64][65] and food. 11 Numerous examples can also be found of fractional viscoelasticity applied to biological materials such as epithelial cells, 66 breast tissue cells, 67,68 lung parenchyma, 69 blood flow, 70,71 as well as red blood cell membranes.…”

Section: Introductionmentioning

confidence: 99%

Fractional viscoelastic models for power-law materials

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Fractional viscoelastic models for power-law materials

et al. 2020

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“…From the test results, we assume that the damage evolution begins at the steady creep stage. So, the evolution equation of the damage variable can be expressed as [10]…”

Section: Damage Evolution Equation and Improvedmentioning

confidence: 99%

“…Wen and Jiang [9] discussed creep behavior of natural clayey soil with gravel at the residual state through a series of creep shear tests. Liao et al [10] conducted a series of triaxial creep on warm frozen silts extracted from Qinghai-Tibet Plateau at a temperature of −1.5°C under the confining pressures of 0.5, 1.0, and 2.0 MPa, respectively. Karimpour and Lade [5] performed triaxial compression tests on dense specimens of Virginia Beach sand at low and high confining pressures to study time effects that relate to grain crushing due to static fatigue or delayed fracture.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on the Creep Behavior of Bayer Red Mud

Zhao

Huang

Shu

et al. 2018

Advances in Civil Engineering

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Long-term stability and safety of the Bayer red mud (BRM) disposal field is very important for the local residents’ life, which necessitates the knowledge of its creep behavior. In order to investigate the creep behavior of BRM, a series of triaxial drained creep tests were conducted by using an improved triaxial creep apparatus. The results indicate that the creep behavior of BRM is significant with confining and deviatoric stresses being critical factors. The creep strain is in a nonlinear relationship with stress and time, and a larger deviator stress will lead to a larger creep strain. The main failure mechanism of BRM is plastic shear, accompanied by a significant compression and ductile dilatancy. Based on the test results, two well-established creep models, the Burgers creep model and Singh–Mitchell creep model, were used to comparatively analyze the creep behavior of the Bayer red mud under a certain stress level. Then, an improved Burgers creep damage constitutive model with the addition of a damage variable was proposed, whose parameters were also analyzed in detail. The comparison of the calculated values of the creep model and the experimental values shows that the proposed creep damage model can better describe the instant elastic deformation, attenuation creep, steady-state creep, and accelerated creep stages of the Bayer red mud.

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“…Arenson et al [7] investigated the creep and strength features of frozen soil under tri-axial stress. Liao et al [8] carried out tri-axial creep test on high temperature frozen silt and established a creep model. Qu et al [9] probed into the direct shear creep features and long-term strength of frozen silty clay at -2°C.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Direct Shear Mechanical Characteristics of Warm Frozen Silty Clay

Zhu¹,

Chen²,

Yao³

et al. 2020

ACSM

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The strength of the warm frozen soil is the key to the design of buildings and structures in the permafrost region, laying the basis for the safe operation and stability evaluation in the later stage of building/structure projects. In this paper, the frozen red silty clay is collected from Wudaoliang section of Qinghai-Tibet Highway, and prepared into samples for direct shear experiments. During the experiments, the direct shear properties of the samples were observed under different densities, normal stresses, water contents, temperatures, etc. The results show that, with the growing density, the cohesion of the frozen silty clay continues to increase, while the internal friction angle decreases first and then increases; with the growth in water content, the cohesion and internal friction angle show the same trends, but the angle increment is small; with the increase in normal stress, the internal friction angle exhibits a declining trend; the shear strength of the frozen soil has a linear relationship with temperature. Through theoretical analysis, the author established an expression for the relationship between shear strength and temperature of warm frozen soil at 0~-2℃, and confirmed that the shear stress-strain relationship of the frozen silty clay belongs to the strain hardening type, which obeys the hyperbolic model proposed by Clough and Duncan. The research findings lay a solid basis for the building/structure design in permafrost regions.

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A fractional order creep constitutive model of warm frozen silt

Cited by 70 publications

References 22 publications

Fractional viscoelastic models for power-law materials

Fractional viscoelastic models for power-law materials

Experimental and Theoretical Studies on the Creep Behavior of Bayer Red Mud

Experimental Study on Direct Shear Mechanical Characteristics of Warm Frozen Silty Clay

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