A state-dependent hypoplastic model for methane hydrate-bearing sands

Li, Jun; Wang, Shun; Jiang, Mingjing; Wu, Wei

doi:10.1007/s11440-020-01076-7

Cited by 22 publications

(15 citation statements)

References 55 publications

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“…Ng et al adopted the phase parameter L in their constitutive model, but the phase parameter L was only determined by the iterative method . Liu et al suggested a piecewise function for the new phase parameter L ′ at two different temperature–pore pressure areas . However, the method for dividing the area was still troublesome.…”

Section: Discussionmentioning

confidence: 99%

“…42 Liu et al suggested a piecewise function for the new phase parameter L′ at two different temperature−pore pressure areas. 43 However, the method for dividing the area was still troublesome. This study adopts the phase state parameter θ to characterize the temperature and pore pressure condition.…”

Section: Discussionmentioning

confidence: 99%

“…The phase parameter L refers to the minimum distance from the temperature–pore pressure point to the phase equilibrium boundary, as shown in Figure . Later, the phase parameter L has been used in analyzing the influence of temperature and pore pressure on the mechanical behavior of MHBS. ,, Liu et al made a modification to the phase parameter L and obtained a new phase parameter L ′ for facilitating model applications. However, the procedure for calculating the new phase parameter L ′ is still tedious.…”

Section: Model Formulationmentioning

confidence: 99%

“…However, the model formula is so complicated that the application is limited. Liu et al 43 introduced a new phase parameter to characterize the temperature and pore pressure condition and further developed a hypoplastic model for MHBS to address the influence of temperature and pore pressure on mechanical behavior. Overall, these two constitutive models have the ability to address the impacts of temperature and pore pressure conditions on mechanical responses of MHBS.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the Mechanical Behavior of Methane Hydrate-Bearing Soil Considering the Influences of Temperature and Pore Pressure

Yan

Song

et al. 2022

Energy Fuels

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Temperature and pore pressure have a significant impact on the mechanical behavior of methane hydrate-bearing soil (MHBS). To characterize the mechanical responses of MHBS under different temperatures and pore pressures, an elastoplastic constitutive model is developed within the framework of the critical-state theory. In the proposed model, an additional variable, called the phase state parameter, is introduced to characterize the temperature and pore pressure condition. Meanwhile, the elastic parameter, plastic modulus, and tensile bonding stress are related to the phase state parameter through several empirical formulas. As a consequence, the influences of temperature and pore pressure on the stiffness, strength, and dilatancy of MHBS are addressed by the proposed constitutive model. Through comparing the predicted results and experimental data, the proposed model is demonstrated to have the ability to capture the influences of hydrate saturation, temperature, and pore pressure on the mechanical behavior of MHBS. In addition, the proposed model is used to analyze the response of MHBS to an increase in temperature or a decrease in pore pressure within the hydrate stability boundary. The result shows that the proposed model can reasonably reflect the mechanical behavior of MHBS induced by heating or depressurization procedures within the hydrate stability boundary.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Model Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling the Mechanical Behavior of Methane Hydrate-Bearing Soil Considering the Influences of Temperature and Pore Pressure

Yan

Song

et al. 2022

Energy Fuels

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“…This basic model has several merits such as simplicity and robustness in numerical simulation. These advantages make it an interesting stand-alone model for many applications [30,31,36,38,46] and further developments [19,20,39].…”

Section: A Basic Hypoplastic Modelmentioning

confidence: 99%

Extension of a basic hypoplastic model for overconsolidated clays

Wang

Zhang

et al. 2020

Computers and Geotechnics

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This paper presents a hypoplastic constitutive model for overconsolidated clays. The model is developed based on a basic model proposed recently for sand. New density and stiffness factors are introduced to account for history dependence. The model is capable of predicting a desirable asymptotic state boundary surface for overconsolidated clays. Validation with experimental results shows this model can properly describe the main features of overconsolidated clays.

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A hypoplastic model for hydrate‐bearing sand considering hydrate saturation and grain breakage

Qian,

Wu,

et al. 2023

Num Anal Meth Geomechanics

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We present a hypoplastic model to capture the mechanical responses of hydrate‐bearing sands by incorporating hydrate saturation and grain breakage. In our model, a new degradation scalar is introduced to account for the effects of hydrate bonding evolution on strength. We also adopt the variable critical state line to assess the effects of hydrate saturation and relative breakage ratio at high confining pressure. This model is validated by modeling a series of laboratory tests.

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A state-dependent hypoplastic model for methane hydrate-bearing sands

Cited by 22 publications

References 55 publications

Modeling the Mechanical Behavior of Methane Hydrate-Bearing Soil Considering the Influences of Temperature and Pore Pressure

Modeling the Mechanical Behavior of Methane Hydrate-Bearing Soil Considering the Influences of Temperature and Pore Pressure

Extension of a basic hypoplastic model for overconsolidated clays

A hypoplastic model for hydrate‐bearing sand considering hydrate saturation and grain breakage

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