Article
Acoustics
Ho Yong Kim, Yeon June Kang
Summary: This paper presents energy models for poroelastic media using the energy flow analysis framework. The models utilize the concept of equivalent longitudinal bulk modulus and density to describe the energy behavior of each propagating mode. The effectiveness of the models is demonstrated in practical cases.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Multidisciplinary
Zhi Yong Ai, Zi Kun Ye
Summary: This paper presents an analytical method for analyzing the vertical and rocking motions of a rigid strip foundation on layered transversely isotropic poroelastic media. The method utilizes the extended precise integration method and Bessel series expansions to calculate the contact stresses for dynamic soil-structure interactions. The effectiveness of the method is verified through numerical examples, and the effects of stratification, transverse isotropy, and permeability on the dynamic responses of the eccentrically loaded rigid strip foundation are investigated.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Engineering, Geological
Zhi Yong Ai, Gan Lin Gu
Summary: This paper investigates the dynamic behavior of layered transversely isotropic (TI) poroelastic media under rectangular harmonic loads. By converting the governing equations of a medium layer and the constitutive equations of TI materials into the ordinary differential domain using integral transform techniques, the solution for a multi-layered system is obtained using the extended precise integration method (PIM) with boundary and load conditions. The numerical results are verified with published work and various examples are used to analyze the influence of transverse isotropy, load frequencies, and stratification on the dynamic behavior of the media.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2022)
Article
Mechanics
Jonathan Verdugo-Olachea, Selene Solorza-Calderon, Antonio Gonzalez-Fernandez, Jonas D. De Basabe
Summary: Using Biot viscosity-extended theory, this work provides a methodology to obtain analytical formulas for the torsional phase velocities and attenuations in fully saturated, homogeneous, isotropic, axially symmetric hollow poroelastic cylinders. Computational simulations are used to compare the torsional wave propagation in different cylinder types and theories.
ARCHIVE OF APPLIED MECHANICS
(2022)
Article
Geochemistry & Geophysics
Sharif M. Morshed, Evgeny M. Chesnokov, Alexandra A. Vikhoreva
Summary: This paper examines the influence of stress, rock microstructure, and frequency on elastic wave velocities and their sensitivity to the Biot effective stress parameter in porous rocks. Through theoretical derivations and numerical calculations, it provides insights into the characteristics of the Biot parameter under various stress conditions and anisotropic settings.
GEOPHYSICAL PROSPECTING
(2021)
Article
Engineering, Multidisciplinary
Zi Ye, Zhi Yong Ai
Summary: This study establishes fully coupled equations based on a Biot-type model to describe the dynamic response of multilayered unsaturated media. The Hankel transform is used to convert partial differential equations into ordinary differential equations, which are then solved using numerical methods. The results demonstrate the significance of dynamic shear modulus, saturation degree, and stratification in influencing the dynamic response of unsaturated media.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Mathematics, Applied
Dmitry Ammosov, Sergei Stepanov, Aleksei Tyrylgin, Alexander Karandeev
Summary: This paper investigates the decision-making process in fractured media, where only partial measurements of fracture pressures are available. The proposed Bayesian decision-making approach allows for the computation of posterior probabilities based on partial data, enabling optimal decision-making. The results demonstrate the efficiency and accuracy of the approach in both single and multiple decision scenarios.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2024)
Article
Engineering, Multidisciplinary
Zhi Yong Ai, Zi Ye
Summary: This paper presents a fully coupled dynamic model that describes the separate flows of two immiscible fluids in layered transversely isotropic unsaturated poroelastic media. The model's ordinary differential matrix equations are derived based on Hankel integral transform and algebraic manipulations, and the final solution is obtained through the extended precise integration method. Numerical examples are conducted to demonstrate the effects of various parameters on the dynamic behavior of unsaturated porous media.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Mathematics, Interdisciplinary Applications
Abhilash Sreekumar, Savvas P. Triantafyllou, Fabien Chevillotte
Summary: A novel Virtual Element Method (VEM) was developed to solve the mixed Biot displacement-pressure formulation governing wave propagation in porous media. The method's convergence behavior, accuracy, and efficiency were examined through illustrative examples, and a node insertion strategy was proposed to resolve non-conforming interfaces in multilayered systems. The VEM was also used to analyze the acoustic response of composite materials with complex geometries.
COMPUTATIONAL MECHANICS
(2022)
Article
Computer Science, Interdisciplinary Applications
Changjie Zheng, Xuanming Ding
Summary: This paper presents a closed-form formulation for the time-harmonic response of single floating piles embedded in a saturated soil layer. The frictional force of surrounding soil to pile vertical motion is established considering the soil layer as a homogeneous isotropic poroelastic medium. The closed-form solution is obtained from the boundary and continuity conditions, avoiding the need for numerically solving complicated integral equations.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Computer Science, Interdisciplinary Applications
L. H. Tong, Haibin Ding, Luolan Zeng, D. X. Geng, C. J. Xu
Summary: A new analytical model based on classical Biot poroelastic theory and nonlocal elastic theory is proposed to investigate the dynamic responses of saturated porous materials under a moving load. The influences of the nonlocal parameter and load moving speed on the displacement field are discussed, with an emphasis on the enhancement of displacement influence with increasing load moving speed. Additionally, the effect of the nonlocal parameter on the “resonance-like” frequency and critical load moving speed in saturated materials is highlighted.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Chemistry, Physical
Jean-Francois Louf, Sujit S. Datta
Summary: The Shape Relaxation (SHARE) approach offers a cost-effective, straightforward, and versatile method for assessing the poroelastic diffusion coefficient of hydrogel particles. Experimental validation using granular packings with varying grain sizes and confining stresses showed good agreement with results obtained using traditional indentation methods, indicating broad potential applications in the field of hydrogels and other swellable soft materials.
Article
Engineering, Mechanical
Joao Paulo Chodacki Quiuqui, Jorge Palomino Tamayo, Samir Maghous
Summary: This study investigates the mechanical response of submarine masses under sea wave loads. Analytical solutions for both dynamic and quasi-static cases are presented, and alternative approaches for the dynamic case solution are discussed. Comparisons of various seabed and wave properties are also evaluated. Preliminary results indicate the applicability of the quasi-static solution under certain conditions, and a simplified stability analysis is proposed.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Qingjie Yang, Alison Malcolm
Summary: The study introduces the method of inversion of subsurface properties using poroelastic theory, and predicts trade-offs among parameters based on sensitivity kernels and radiation patterns. Numerical experiments verify the feasibility and effectiveness of this method, while various factors influencing inversion results are discussed.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Engineering, Chemical
Alex Guo, William C. Marshall, Corey C. Woodcock, Joel L. Plawsky
Summary: This study explores the use of mazes as abstract representations to study the configuration problem in two-phase systems. It is shown that desired performance can be achieved by tuning the settings of the maze algorithm. Additionally, the study demonstrates that the optimization of surrogate maze geometry can guide the design of engineered systems.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Geochemistry & Geophysics
J. German Rubino, Eva Caspari, Tobias M. Mueller, Klaus Holliger
GEOPHYSICAL JOURNAL INTERNATIONAL
(2017)
Article
Geochemistry & Geophysics
Qiaomu Qi, Tobias M. Muller, Marina Pervukhina
Article
Geochemistry & Geophysics
Santiago G. Solazzi, Luis Guarracino, J. German Rubino, Tobias M. Mueller, Klaus Holliger
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2017)
Article
Geochemistry & Geophysics
Xiumei Zhang, Tobias M. Muller
Article
Geochemistry & Geophysics
Jiabin Liang, Tobias M. Mueller, Genyang Tang, Shangxu Wang
GEOPHYSICAL PROSPECTING
(2019)
Article
Geochemistry & Geophysics
Tobias M. Mueller, Pratap N. Sahay
Article
Engineering, Geological
Shakil Ahmed, Tobias M. Mueller, Mahyar Madadi, Victor Calo
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2019)
Article
Geochemistry & Geophysics
Pratap N. Sahay, Tobias M. Muller
Article
Geochemistry & Geophysics
Yadong Zhang, Reza Rezaee, Tobias M. Muller, Guangjie Zheng, Jimmy X. Li, Yu Fan, Bo Zeng, Xiaojin Zhou
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2020)
Article
Geosciences, Multidisciplinary
Jimmy X. Li, Reza Rezaee, Tobias M. Mueller, Mohammad Sarmadivaleh
Summary: Research has shown that the flow permeability of porous media is influenced by the pore size distribution, which is often ignored in traditional models. By developing a new dynamic permeability model that explicitly considers the pore size distribution, the impact of pore size distribution on permeability can be more accurately understood and utilized in permeability determination processes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Jimmy Xuekai Li, Reza Rezaee, Tobias M. Muller, Mahyar Madadi, Rupeng Ma, Mohammad Sarmadivaleh
Summary: Understanding seismic wave propagation in granular porous media is crucial for subsurface characterization. This study investigates the influence of wettability conditions on wave propagation in (partially) saturated granular porous media through laboratory experiments. The results reveal that the presence of liquid bridges in water-wetting conditions reinforces force chains and increases the P-wave velocity, leading to incoherent scattering. In contrast, gas-wetting conditions prevent the formation of liquid bridges, resulting in negligible incoherent scattering.
Article
Geochemistry & Geophysics
Nicolas D. Barbosa, Victoria A. Jimenez Martinez, Nima Gholizadeh Doonechaly, Tobias M. Mueller, Klaus Holliger
Summary: Fractures in the upper crust have a significant impact on fluid flow and pore pressure distribution. Experimental studies show that the hydraulic response of fractures is period and pressure amplitude dependent, likely related to fracture deformation.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Proceedings Paper
Engineering, Multidisciplinary
Pratap N. Sahay, Tobias M. Mueller
POROMECHANICS VI: PROCEEDINGS OF THE SIXTH BIOT CONFERENCE ON POROMECHANICS
(2017)
Proceedings Paper
Engineering, Multidisciplinary
Tobias M. Muller, Pratap N. Sahay
POROMECHANICS VI: PROCEEDINGS OF THE SIXTH BIOT CONFERENCE ON POROMECHANICS
(2017)
Proceedings Paper
Engineering, Multidisciplinary
Shakil Ahmed, Tobias M. Muller, Jiabin Liang, Genyang Tang, Mahyar Madadi
POROMECHANICS VI: PROCEEDINGS OF THE SIXTH BIOT CONFERENCE ON POROMECHANICS
(2017)
