Browsing School of Civil and Environmental Engineering Publications and Presentations by Title
Now showing items 1-20 of 109
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An alternative to periodic homogenization for dentin elastic stiffness
(2019)Dentin, the main tissue of the tooth, is made of tubules surrounded by peri-tubular dentin (PTD), embedded in a matrix of inter-tubular dentin (ITD). The PTD and the ITD have different relative fractions of collagen and ... -
Analysis of friction induced thermo-mechanical stresses on a heat exchanger pile in isothermal soil
(Georgia Institute of Technology, 2014)In most analytical and numerical models of heat exchanger piles, strain incompatibilities between the soil and the pile are neglected, and axial stresses imposed by temperature changes within the pile are attributed to ... -
Analysis of microstructure, deformation and permeability of salt/sand mixtures during creep
(Georgia Institute of Technology, 2017-07)The impact of impurities on salt healing properties is studied through creep tests performed on brine saturated granular salt with various quartz contents. Quartz grains act as shields that reduce dissolution at salt grain ... -
Analysis of unsaturated materials hydration incorporating the effect of thermo-osmotic flow
(Georgia Institute of Technology, 2015-10)The geological disposal of a high level radioactive waste relies in a system composed of engineered and geological barriers. The soils and rocks involved in the design of this type of solution are generally initially ... -
Anisotropic Damage Models for Geomaterials: Theoretical and Numerical Challenges
(Georgia Institute of Technology, 2013-08)A new anisotropic damage model for rock is formulated and discussed. Flow rules are derived with the energy release rate conjugate to damage, which is thermodynamically consistent. Drucker–Prager yield function is adapted ... -
Anisotropic nonlocal damage model for materials with intrinsic transverse isotropy
(2018-01)This paper presents the theoretical formulation and numerical implementation of an anisotropic damage model for materials with intrinsic transverse isotropy. Crack initiation and propagation are modeled by phenomenological ... -
Applications of Damage Poromechanics to Geostorage and Injection Problems
(Georgia Institute of Technology, 2012-07-12) -
Applications of Poromechanics to Energy Engineering
(Georgia Institute of Technology, 2012-01) -
Bayesian Paradigm to Assess Rock Compression Damage Models
(Georgia Institute of Technology, 2014-03)Energy extraction and waste storage in geological formations raise interest in developing systematic and reliable calibration methods to assess performance of rock models. A methodology is proposed to improve damage ... -
Bio-Inspired Fluid Extraction Model for Reservoir Rocks
(Georgia Institute of Technology, 2017-06)Biological and engineering flow systems maximize their efficiency by following the path of minimum energy over the domain they are embedded in. This fact motivates the present research, since industrial fluid extraction ... -
Bio-Inspired Porous Network Topology for Optimal Injection and Withdrawal Processes in Soils
(Georgia Institute of Technology, 2014-02)Bronchi, arteries and veins, tree branches and roots, exhibit a fractal topology, i.e. networks formed by channels that successively split in to smaller channels. A thorough literature review shows that self-similar ... -
Book of Abstracts Report from: International Workshop on Education of Future Geotechnical Engineers in Response to Emerging Multi-scale Soil-Environment Problems
(Georgia Institute of Technology, 2014-09)Book of abstracts compiled by over 40 participants, as part of a workshop organized by Principal Investigators Chloé Arson and Giuseppe Buscarnera, under NSF Grant CMMI-1443990. The workshop addressed the new skill set ... -
Breakage Mechanics Modeling of the Brittle-ductile Transition in Granular Materials
(Georgia Institute of Technology, 2016-06)During comminution, several energy dissipation processes operate simultaneously, including plastic work due to internal friction, fracture energy release due to particle breakage, and plastic work due to the rearrangement ... -
Chemo-Mechanical Damage and Healing of Granular Salt: Micro-macro modeling
(Georgia Institute of Technology, 2016-06)A micro-macro chemo-mechanical model of damage and healing is proposed to predict the evolution of salt stiffness and deformation upon micro-crack propagation, opening, closure and rebonding, which is the result of pressure ... -
Chemo-mechanical evolution of pore space in carbonate microstructures upon dissolution: linking pore geometry to bulk elasticity
(Georgia Institute of Technology, 2015-09)One of the challenges faced today in a variety of geophysical applications is the need to understand the changes of elastic properties due to time-variant chemo-mechanical processes. The objective of this work is to model ... -
Conventional hydroelectricity and the future of energy: Linking national T inventory of dams and energy information administration data to facilitate analysis of hydroelectricity
(Elsevier, 2020-01)Within the energy community, conventional dam and reservoir-based hydroelectricity is often viewed as a low- cost, immediately available zero-carbon resource that could facilitate more intermittent renewable electricity ... -
Damage and healing model of stiffness and permeability for salt rock: microstructure imaging, fabric processes and continuum mechanics
(Georgia Institute of Technology, 2016-06)In this study, we proposed a fabric-enriched Continuum Damage Mechanics model to investigate the coupled influence of damage and healing on the mechanical and transport properties of salt rock. In order to infer the form ... -
DEM analysis on the role of aggregates on concrete strength
(Georgia Institute of Technology, 2019-10-02)This study aims to understand the micro-mechanisms that drive fracture propagation in concrete and to assess the roles of the strength of aggregates and of the aggregate/mortar interfacial transition zone (ITZ) on concrete ... -
DEM modelling of sequential fragmentation of zeolite granules under oedometric compression based on XCT observations
(Elsevier, 2019)The objective of our research is to define a new Discrete Element Method (DEM) that can describe the processes involved in particle breakage and the resulting macroscopic behaviour of the particulate assembly, by directly ... -
Discrete Element modeling and analysis of shielding effects during the crushing of a grain
(Georgia Institute of Technology, 2015-07)The potential for a particle to crush under one-dimensional compression is critically dependent on the coordination number of that particle. Neighboring particles decrease deviatoric forces at contacts, which reduces ...
