Development of coupled numerical model for simulation of multiphase soil

Edip, Kemal; Sesov, Vlatko; Butenweg, Christoph; Bojadjieva, Julijana

doi:10.1016/j.compgeo.2017.08.016

Cited by 4 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The multiphase pore medium theory (or mixture theory) starts from the first law of thermodynamics and the second law of thermodynamics, takes into account the action of various factors, and after reasonable assumptions and strict derivation, a set of intrinsic constitutive equations describing the properties of the soil can be obtained (Edip et al, 2018;Kjelstrup et al, 2018;He et al, 2021;Oka and Kimoto, 2021). The intrinsic constitutive equations derived from mixture theory are scientifically systematic and rigorous (Guo Z. et al, 2021;Liu and Lai, 2020;Liu et al, 2017;.…”

Section: Introductionmentioning

confidence: 99%

Analysis on “three-box” model of stress-strain in frozen soil porous media based on representative macroscopic Volume

et al. 2022

View full text Add to dashboard Cite

In cold regions, the pore space’s composition and phase state can affect the elastic modulus of the media. During the winter, the freezing conditions in the soil results in the release of water from the pore space, which results in significant changes in the media’s distribution and composition. There are a few weaknesses in the current research with respect to the elastic modulus change example of frozen soil. This paper presents that the Representative Macroscopic Volume (RMV) choice strategy is provided for frozen soil with porosity as a typical condition variable. Under the state of freezing, a “three-box” analytical model for stress-strain calculation of frozen soil porous media is established, namely, the black-box model, the gray-box model, and the white-box model. The relevant equations for calculating elastic modulus are presented based on the proposed “three-box” model and the analysis of the stress conduction process. Results show that the discrepancy between the computed and experimental values of the white-box model is slight, and the elastic modulus of frozen soil calculated by the model established in this paper is consistent with the actual state. It can be deduced that the model established in this paper has practicality and the conclusions of the study are of guiding significance for the application of frozen soil.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis on “three-box” model of stress-strain in frozen soil porous media based on representative macroscopic Volume

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The mechanics approach is based primarily on the work of Terzaghi (Terzaghi 1943) and Biot's theory (Biot 1941, Biot 1962). Many models have been developed using this approach, including unsaturated hydro-mechanical models (Sanavia et al 2002, Li andYang 2018), large-strain hydro-mechanical models (Meroi et al 1995), multiphase flow models (Edip et al 2018), and coupled thermo-hydro-mechanical-chemical models (Li et al 2006, Seetharam et al 2007. This approach has found to be useful when developing new models for specific applications (e.g., introducing formulations of other fields to the constitutive model) and has supported many practical areas of geomechanics and engineering.…”

Section: Introductionmentioning

confidence: 99%

New Unsaturated Dynamic Porosity Hydromechanical Coupled Model and Experimental Validation

Wang

Howlett

et al. 2022

Int. J. Geomech.

View full text Add to dashboard Cite

Constitutive coupled modeling has developed rapidly in recent decades, with numerous new models published. However, few models consider dynamic porosity, and experimental validation of such a model remains a challenge due to multiple variables. In this study, a new constitutive model for unsaturated soil with dynamic porosity was developed and validated using test data from two experimental studies that yielded good results (relative average error AVRE = 0.8631-1.3046, R 2 = 0.9028-0.9981). The sensitivity of the model to the four primary parameters was analyzed to investigate the influence of model properties on the hydraulic and mechanical behavior. Results show that the calculation of volumetric strain is most sensitive to Young's modulus (E), while the calculation of specific water volume is most sensitive to permeability (k). Also, the sensitivity of the parameters changes with their value. Modeled results show that the porosity change significantly affects both hydraulic and mechanical behavior, even when soil undergoes relatively low deformation. Relative calculation error decreases notably after porosity change is considered (44.9% and 35.2% improvement in two different calculations). This study also finds that dynamic porosity affects the deformation energy of solids.

show abstract

“…In the present work, the analysis of water flow through an earth dam coupled with the mechanical behavior of the soil skeleton is considered. A mathematical framework assuming porous medium in which the voids of the medium are filled with water is considered and the solution of the partial differential equation system is solved using the finite element method [3]. The numerical model involves both momentum and mass balance equations and can be presented as follows:…”

mentioning

confidence: 99%

Pore Pressure Effects in Seismic Simulation of an Earth Dam

Edip¹,

Sheshov²,

Bojadjieva³

et al. 2021

1st Croatian Conference on Earthquake Engineering

View full text Add to dashboard Cite

Effective and efficient modeling of soil media is of importance in geotechnical earthquake engineering especially when pore pressure development is considered. Concerning the formulation of the coupled approach, a soil element is presented as a mixture of three constituents -soil grains, water and air in the pores. For the mathematical description of the coupled approach mixture theory is considered including the concept of volume fractions. In application of the model the behavior of an earth dam of a trapezoidal cross section is numerically simulated.

show abstract

Development of coupled numerical model for simulation of multiphase soil

Cited by 4 publications

References 36 publications

Analysis on “three-box” model of stress-strain in frozen soil porous media based on representative macroscopic Volume

Analysis on “three-box” model of stress-strain in frozen soil porous media based on representative macroscopic Volume

New Unsaturated Dynamic Porosity Hydromechanical Coupled Model and Experimental Validation

Pore Pressure Effects in Seismic Simulation of an Earth Dam

Contact Info

Product

Resources

About