Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Poroelasticity"”.
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The functional role of tectorial membrane poroelasticity in cochlear mechanics
The tectorial membrane (TM) is an extracellular matrix that overlies the mechanically sensitive hair bundles of sensory receptor cells in the inner ear. Based on this strategic position, it has long been accepted that the TM plays a critical role in the stimulation of sensory hair cells. Early …
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A Boundary Element Method for Thermo-poroelasticity with Applications in Rock Mechanics
… a non-isothermal poroelastic theory, or thermo-poroelasticity. Many problems formulated within the framework of thermo-poroelasticity are not amenable to analytical treatment and need to be solved numerically. The boundary element method (BEM) has proven suitable for the poroelastic and …
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Numerical and analytical vibro-acoustic modelling of porous materials: the Cell Method for poroelasticity and the case of inclusions
Porous materials are widely used in many fields of industrial applications, to achieve the requirements of noise reduction, that nowadays derive from strict regulations. The modeling of porous materials is still a problematic issue. Numerical simulations are often problematic in case of real …
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Micro-Pipette Aspiration for Hyperelastic and Poroelastic Material
… with the properties of hyperelasticity and poroelasticity, to study the response of these materials under the loading conditions of aspiration. The work put forth, builds on complexities by considering geometric non-linearities of contact between the continuum and the pipette, leading to …
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A numerical study of wave propagation in poroelastic media by use of the localized differential quadrature (LDQ) method
… The right theory for such materials is poroelasticity. Since many investigations on poroelasticity have been conducted on static problems, the study on wave propagation is of great importance. First in this thesis, the theory of wave propagation in fluid-saturated poroelastic media and …
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A Three-dimensional Model of Poroviscous Aquifer Deformation
… porous media. Relative to the classical linear poroelasticity, the proposed model provides a more realistic tool, yet with greater simplicity, in modeling and prediction of aquifer movement. Based on laboratory consolidation tests conducted on clastic sedimentary materials, three phases of …
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Nanomechanics of cartilage at the matrix and molecular levels
… mechanical functions of cartilage is known to be poroelasticity, based on previous theoretical and experimental studies. Poroelasticity manifests itself via fluid-solid frictional dissipation and intra-tissue fluid pressurization that underlie important mechanical functions of cartilage, …
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Microporoelastic modeling of organic-rich shales
… contribution to the effective anisotropic poroelasticity of organic-rich shales which can pave the way for more efficient and effective exploration and exploitation. We introduce an original approach for micromechanical modeling of organic-rich shales which accounts for the effect of …
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Intercellular flow-mediated force relaxation measurement on the three-dimensional multicellular tissue
… material's properties, i.e., viscoelasticity and poroelasticity. For poroelastic material, the force relaxation is due to water redistribution; hence, the speed highly depends on the sample sizes. In contrast, for viscoelastic material, it is determined by the bulk material properties, thus …
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The role of hydrodynamic interactions in the dynamics and viscoelasticity of actin networks
… quadratic system-size dependency consistent with poroelasticity. Our results suggest that including HIs is critical for consistency in theoretical models or analyzing experimental observation in cytoskeleton mechanics and dynamics. We also propose a new rod method to incorporate the HIs accurately …
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Poroelastic Center of Dilation Revisited
In both elasticity and poroelasticity, the nucleus of strain is usually used to refer to a singular solution such as the point force, the force dipole, the centers of rotation and dilation, etc. These fundamentals solutions constitute the building blocks for various problems of practical importance …
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Understanding the mechanics of growth: A large deformation theory for coupled swelling-growth and morphogenesis of soft biological systems
… for swelling coupled growth employ linear poroelasticity, which is limited to small swelling deformations, and employ phenomenological prescriptions for the dependence of growth rate on concentration of diffusing species and the stress-state in the system. In particular, the termination of …
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Microporomechanical modeling of shale
… for developing predictive models for shale poroelasticity and strength. Modeling is accomplished through a multi-scale approach, in which the experimental evidence gathered from novel nanoindentation techniques and conventional macroscopic tests informs the development of a suit of …
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Material invariant properties of shales : nanoindentation and microporoelastic analysis
… of a novel multiscale upscaling model for shale poroelasticity. The proposed model relies on a few quantities that can be easily obtained from mineralogy and porosity data. This model is calibrated and validated, and its domain of application and limitations are discussed. The strong predictive …
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Complex fluid lubrication mechanics of polyacrylamide surfaces
… cause the behavior, which are viscoelasticity, poroelasticity, and transient adhesion. Since the lubrication hysteresis is related to transient mechanics, I established a matrix of reference data by conducting lubrication experiments at various sliding durations under continuous contact by using …
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Fluid Flow Processes at Mid-Ocean Ridge Hydrothermal Systems
… the bulk crustal permeability. The equations of poroelasticity are reviewed to demonstrate how the nonlinear thermodynamic properties of water influence the response of a hydrothermal system to tidal loading at the seafloor. A selection of simple analytical solutions reveals the phase …
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Poroelastic properties of carbonates: a case study on Indiana limestones
This thesis studies the poroelasticity of carbonate rocks and investigates the dependence of various physical properties on confining pressure and pore pressure. These physical properties include porosity, permeability, static strain, ultrasonic P- and S-wave velocities. In a process, I estimate …
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Poroelastic modeling of groundwater and hydrocarbon reservoirs : investigating the effects of fluid extraction on fault stability
… groundwater and hydrocarbon basin. The theory of poroelasticity was used to calculate the stress changes resulting from fluid flow. Then, the resulting fault stability was evaluated with the the Coulomb Failure Function ([Delta]CFF). A COMSOL and MATLAB workflow was used to derive the results. Two …
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Computational Techniques for Efficient Solution of Discretized Biot's Theory for Fluid Flow in Deformable Porous Media
… media was theoretically established in the poroelasticity theory developed by Biot, and it has become a powerful theory for modeling three-dimensional consolidation type of problem. The analysis of the porous media with fully-coupled simulations based on the Biot's theory requires intensive …
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Geomechanical Stability Analysis for Co2 Sequestration in Carbonate Formation
… and geomechanically. In this dissertation, thermoporoelasticity guides the theoretical establishment of a conservative baseline for the geomechanical stability analysis of CO2 sequestration.</p><p>Extensive laboratory tests, including CO2 flooding tests, permeability tests, uniaxial and triaxial …
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