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Mechanics of Solids Theses and Dissertations

Theses and Dissertations for the Mechanics of Solids department.

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Items (1-20) out of 43 results

A Mechanics Study on Surface Ruga Morphologies of Soft Materials

Description:
The surface morphologies of different soft material systems comprise various ruga phases (wrinkle, crease, fold or ridge). In the past a few decades, despite that …
Year:
2016
Contributor:
Zhao, Ruike (creator)
Kim, Kyung-suk (Director)
Gao, Huajian (Reader)
Franck, Christian (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
ruga-phase diagram
global localization
strain mismatch
irreversibility
mobility bifurcation
order-disorder transition
morphology control
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Adhesion in Hydrogel Contacts

Description:
A generalized thermoelastic model for adhesion was developed to elucidate the mechanism of dissipation within the viscoelastic bulk of a hydrogel. Results show that in …
Year:
2015
Contributor:
Torres , Jahn Ramon (creator)
Kim, Kyung-Suk (Director)
Jay, Gregory (Reader)
Franck, Christian (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
contacts
dissipation
Eshelby
Clausius-Duhem
inhomogeneity
lubricin
PRG4
hydrogel
polymer brush
biofouling
graded modulus
wrinkle
AFM calibration
diamagnetic normal force calibration
D-NFC
poly(dimethyl) siloxane
PDMS
Adhesion
Tribology
Energy dissipation
Fouling
Atomic force microscopy
Polydimethylsiloxane
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

An Investigation of Electric Field Induced Surface Diffusion and Micro/Nano Scale Island Growth: Experiments and Modeling

Description:
An experimental study of electric field induced surface diffusion is presented. A FEM analysis and a stability analysis of conducting surfaces subjected to a normal …
Year:
2008
Contributor:
Gill, Vinaypreet S. (creator)
Guduru, Pradeep (director)
Bower, Allan (reader)
Sheldon, Brian (reader)
Brown University. Division of Engineering. Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Surface Diffusion
Surface instability
Island growth
Guided assembly.
Electric fields
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Engineering
Theses and Dissertations
Full Record

Atomistic Modeling of Deformation at the Nanoscale

Description:
Studies of two nanoscale systems with important engineering applications, Al-Si nanocomposites and Au nanoasperities, are investigated using molecular dynamics. The first system is studied in …
Year:
2008
Contributor:
Ward, Donald K. (creator)
Curtin, William (director)
Kim, Kyung-Suk (reader)
Kumar, Sharvan (reader)
Brown University. Division of Engineering. Mechanics of Solids (sponsor)
Genre:
theses
Subject:
atomistics
nanocomposites
size-scaling
nanoasperity
Nanocomposites (Materials)
Plasticity
Metals
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Engineering
Theses and Dissertations
Full Record

Collective Behavior at the Interface of Lithium-Ion Batteries under Cyclic Lithiation

Description:
This thesis presents experimental measurements and modeling of multi-scale collective behaviors characteristics of hierarchical interfaces in lithium-ion batteries (LIBs) during cycling. Two interfacial mechanisms are …
Year:
2014
Contributor:
Wu, Hsiao-Mei (creator)
Kim, Kyung-Suk (Director)
Guduru, Pradeep R. (Reader)
Sheldon, Brian W. (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
lithium-ion battery
interfacial shear strength
Linnik interferometer
solid electrolyte interphase formation
bubble-gas generation
prestressed battery cell
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Computational Studies of Fracture in Micro- and Nano-Scale Structures

Description:
The electronics industry drives a great deal of research towards inventing methods for creating smaller devices. In order for the current trend of the diminishing …
Year:
2012
Contributor:
Grantab, Rassin (creator)
Shenoy, Vivek (Director)
Guduru, Pradeep (Reader)
Sheldon, Brian (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
fracture
micro
nano
lithium-ion
battery
Lithium ions
Graphene
Nanowires
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Contact mechanics of biologically-inspired interface geometries

Description:
The mechanics of biological contact are important in many natural processes, motivating extensive study of biological adhesive systems as well as attempts at biomimickry through …
Year:
2009
Contributor:
Waters, Julie F. (creator)
Guduru, Pradeep (director)
Gao, Huajian (reader)
Kim, Kyung-Suk (reader)
Brown University. Division of Engineering. Mechanics of Solids (sponsor)
Genre:
theses
Subject:
concave surfaces
wavy surfaces
mixed mode contact
Contact mechanics
Adhesion
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Engineering
Theses and Dissertations
Full Record

Coupled dislocation/dislocation and solute strengthening mechanisms in metal alloys

Description:
In most engineering metal alloys, the overall plastic resistance is contributed by two or more strengthening mechanisms operating simultaneously. Two major sources of strengthening in …
Year:
2012
Contributor:
DONG, YI (creator)
Curtin, William (Director)
Bower, Allan (Reader)
Kumar, Sharvan (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
dislocation
strengthening mechanism
numerical simulations
metal alloy
Strengthening mechanisms in solids
Alloys
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Deformation Mechanisms in Magnesium Alloys at Elevated Temperature

Description:
Abstract of "Deformation Mechanisms in Magnesium Alloys at Elevated Temperature" by David E. Cipoletti, Ph.D., Brown University, May 2011The goals of this dissertation were to …
Year:
2011
Contributor:
Cipoletti, David E (creator)
Bower, Allan (Director)
Curtin, William (Reader)
Kumar, K. (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
crystal plasticity
grain boundary sliding
Magnesium
Superplasticity
Finite element method
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Discrete Dislocation Modeling of Fracture/Fatigue

Description:
The discrete dislocation (DD) plasticity is truly mechanism-based plasticity and well-suited for mesoscale modeling in metal. The effects of size-dependent plasticity and plastic dissipation emerge …
Year:
2013
Contributor:
Olarnrithinun, Sutee (creator)
Curtin, William (Director)
Blume, Janet (Reader)
Padture, Nitin (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
Fracture
Discrete Dislocation
Anisotropic Metals
Short Cracked Particle
Fatigue
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Driving Forces for Cell Cluster Shape Evolution and Stability

Description:
Observation of self assembly of clusters of cells in three dimensions has raised questions about the forces that drive the changes in shape of the …
Year:
2011
Contributor:
Nurse, Asha K (creator)
Freund, Lambert (Director)
Bower, Allan (Reader)
Chason, Eric (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
shape evolution
cell clusters
thermodynamic driving force
Mathematical models
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Effects of Elasticity and Geometry on Cellular Uptake of Nanoparticles

Description:
A fundamental understanding of cell-nanomaterial interaction is essential for biomedical diagnostics, therapeutics, and nanotoxicity. Here we perform theoretical analysis to investigate the cellular uptake of …
Year:
2014
Contributor:
Yi, Xin (creator)
Gao, Huajian (Director)
Hurt, Robert (Reader)
Kesari, Haneesh (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
cellular uptake
elastic nanoparticles
one-dimensional nanomaterials
two-dimensional nanomaterials
Endocytosis
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Experimental Analysis of Surface Deformations Caused By Residual Stresses In Complex Solid Structures

Description:
Described here are a set of experiments whose aim is to correlate the residual stress in a complex solid structure to a measurement of surface …
Year:
2008
Contributor:
Burke, Brian C. (creator)
Kim, Kyung-Suk (director)
Blume, Janet (reader)
Bower, Allan (reader)
Brown University. Division of Engineering. Mechanics of Solids (sponsor)
Genre:
theses
Subject:
roughness evolution
inverse methods
electronic speckle pattern interferometry
large deformations
Residual stresses
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Engineering
Theses and Dissertations
Full Record

Fracture and Wrinkling in Graphene with Topological Defects

Description:
Here we investigated the fracture and wrinkling in graphene with topological defects using atomistic simulations and continuum models. We first studied the flaw insensitive fracture …
Year:
2015
Contributor:
zhang, teng (creator)
Huajian, Gao (Director)
Kyung-Suk, Kim (Reader)
Brian, Sheldon (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
topological defects
fracture
wrinkle
continuum model
Graphene
Topological defects (Physics)
Molecular dynamics
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Free Energy Calculation of Mechanically Unstable but Dynamically Stabilized Phases

Description:
The phase diagram of numerous materials of technological importance features high-symmetry high-temperature phases that exhibit phonon instabilities. Leading examples include shape-memory alloys, as well as …
Year:
2016
Contributor:
kadkhodaei, sara (creator)
van de Walle, Axel (Director)
Bower, Allan (Reader)
Peterson, Andrew (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
lattice vibrations
free energy calculation
anharmonic effects
mechanically unstable phases
dynamical stabilization
coarse-graining of partition function
piecewise polynomial potential partitioning
Thermodynamics
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Grain Boundary Field Projection Method and Atomic Lattice Interferometer for Nanometrology

Description:
The aim of this thesis is to investigate how grain boundary (GB) strength and separation mechanisms affect strength and ductility of nanocrystalline materials. Such nanoscale …
Year:
2014
Contributor:
Wang, Chien-Kai (creator)
Kim, Kyung-Suk (Director)
Gao, Huajian (Reader)
Kumar, Sharvan (Reader)
Brown University. ENGINEERING: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Grain boundary
Nanocrystalline materials
Field projection method
Atomic force microscope
Atomic lattice interferometer
Nanometrology
Strength of materials
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Hierarchical Multiscale Models of Nanotubes Strengthening and Toughening of Ceramic Matrix Composites

Description:
Carbon nanotubes (CNTs) have the potential to introduce significant improvements in fracture strength and toughness of ceramic materials when compared to traditional microscale reinforcements. Ceramic …
Year:
2013
Contributor:
Pavia, Fabio (creator)
Curtin, William (Director)
Blume, Janet (Reader)
Sheldon, Brian (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
Ceramic Matrix Composites
Fracture
Interface Properties
Carbon nanotubes
Molecular dynamics
Ceramic-matrix composites
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

High Frequency Viscoelasticity of Soft Materials at Low to Moderate Strains with Implications for Vocal Fold Tissue Engineering

Description:
Vocal folds are driven in a shear-dominated, wave-like motion at high frequencies (100-1000 Hz) at strains up to 30% during phonation. Damage to the vocal …
Year:
2013
Contributor:
Teller, Sean S (creator)
Clifton, Rodney (Director)
Kim, Kyung-Suk (Reader)
Tripathi, Anubhav (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
vocal folds
Viscoelasticity
Tissue engineering
Vocal cords
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Implementation and Application ofGurtin Strain Gradient Viscoplasticity

Description:
Length scale effects in plastic deformation, restrictions on plastic deformation, and realistic simulation of fracture behavior are critical for future engineering design and reliability. Plastic …
Year:
2011
Contributor:
Nath, Prateek (creator)
Curtin, William (Director)
Gao, H (Reader)
Kumar, S (Reader)
Brown University. ENGINEERING: Solid Mechanics (sponsor)
Genre:
theses
Subject:
Strain gradient plasticity
crystal plasticity
crack
length scale
plasticity
dislocation
discrete dislocation
coating
delamination
fracture
Plasticity
Composite materials--Delamination
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Internal degrees of freedom in membranes and synchronization phenomena at low Reynolds number

Description:
The cell membrane is not a simple assembly of lipids and proteins. There are many internal degrees of freedom in a membrane, such as the …
Year:
2009
Contributor:
Jiang, Hongyuan (creator)
Powers, Thomas (director)
Tang, Jay (reader)
Shenoy, Vivek (reader)
Brown University. Division of Engineering. Mechanics of Solids (sponsor)
Genre:
theses
Subject:
vesicle shape
tilt order
lipid sorting
cilia and flagella
Cell membranes
Synchronization
Language:
English
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Engineering
Theses and Dissertations
Full Record

Items (1-20) out of 43 results