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Liu, Zhanfang; Boer, Reint de

doi:10.1023/a:1006590119031

Cited by 32 publications

(1 citation statement)

References 14 publications

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“…Zhou and Lai [22] established the relations of wave propagation characteristics, attenuation characteristics, and porosity in frozen soils. In addition, the propagation characteristics of saturated soils based on the assumption of an uncompressed solid skeleton were studied [23][24][25][26]. Dutta [27] acquired the velocities of two compressional waves in saturated porous media using the analytical method, and the velocities had good agreement with those measured from experiments [13].…”

Section: Introductionmentioning

confidence: 96%

The Influence of Permeability on the Propagation Characteristics of the Waves in Different Saturated Soils

Jia

2021

Applied Sciences

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The permeability of saturated soils has great influence on the velocities and attenuation characteristics of fast compressional wave P1, low compressional wave P2, and shear wave S in saturated soils, respectively. In three different cases, namely zero, finite, and infinite permeability, the wave equations and theoretical velocities of P1, P2, and S wave in saturated soils are given based on the u-w-p equation, respectively. According to the solutions of the wave equations, the real velocities and attenuation coefficients of three waves are redefined, respectively. In different saturated soils, the influences of the permeability and the loading frequency on the wave velocities and attenuation are discussed, respectively. Moreover, the suitable application scope of the u-p equation is discussed based on different permeabilities and loading frequencies.

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Section: Introductionmentioning

confidence: 96%

The Influence of Permeability on the Propagation Characteristics of the Waves in Different Saturated Soils

Jia

2021

Applied Sciences

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Propagation of Rayleigh waves in unsaturated porothermoelastic media

Liu

Zhou

Wang

et al. 2020

Num Anal Meth Geomechanics

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SummaryBased on the frame of elastic theory for unsaturated porous medium, considering the influence of thermal effect, the propagation characteristics of Rayleigh wave in unsaturated porous media are studied. Firstly, the thermoelastic wave equations for three‐phase porous media are established, in which the mass balance equations, generalized Darcy law, momentum balance equations, and generalized non‐Fourier heat conduction law are taken into account. Secondly, through theoretical derivation, the dispersion equation of Rayleigh wave for unsaturated porothermoelastic media is given by introducing the potential functions. Finally, the variations of the phase velocity of Rayleigh wave are analyzed with numerical examples. The results show that the thermal conductivity has little effect on the phase velocity of Rayleigh wave. The phase velocity of Rayleigh wave increase with increasing of the thermal expansion coefficient and media temperature.

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A comparison of variational formats for porous media subjected to dynamic loading

Lenhof

Larsson

Runesson

2011

Num Anal Meth Geomechanics

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SUMMARYThis paper presents a comparison of two variational formats for fully saturated porous media subjected to dynamic loading, whereby the general situation of relative fluid acceleration is considered: (1) the classical three-field (u, p, w)-format and (2) a novel two-field (u, p)-format, where the seepage velocity w is a spatially 'local' field whose treatment resembles that of internal variables in material models. The limited numerical comparison shows that the (u, p)-format competes well with the (u, p, w)-format. Indeed, it is consistent with the general acceleration modeling in the full range of permeabilities. Moreover, in the low permeability regime (where the magnitude of w is insignificant), the new format reflects the situation pertinent to 'added-mass' and is more efficient than the classical (u, p, w)-format. Finally, the (u, p)-format can conveniently be implemented in existing FE-codes based on the 'added mass' formulation.

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Untitled

Cited by 32 publications

References 14 publications

The Influence of Permeability on the Propagation Characteristics of the Waves in Different Saturated Soils

The Influence of Permeability on the Propagation Characteristics of the Waves in Different Saturated Soils

Propagation of Rayleigh waves in unsaturated porothermoelastic media

A comparison of variational formats for porous media subjected to dynamic loading

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