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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 84 results

A first-principles investigation of refractory alloy systems united by a common computational framework

Description:
The cluster expansion formalism for alloys is used to investigate phenomena in several refractory alloys: Co3W (superalloy), NbTiVZr, HfNbTaTiZr, and AlHfNbTaTiZr (high entropy alloys). Density …
Year:
2021
Contributor:
Nataraj, Chiraag M (creator)
van de Walle, Axel (Advisor)
Henann, David (Reader)
Padture, Nitin (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Density Functional Theory
Phase separation
cluster expansion
first-principles calculations
high entropy alloys
Heat resistant alloys
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

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

A Slow Crack Growth Model for High-Density Polyethylene under Thermal and Chemical Environment

Description:
High-density polyethylene (HDPE) is a widely used thermoplastic polymer with application as the material for pipeline transport systems. Due to the longterm, low-stress conditions of …
Year:
2023
Contributor:
Nam, Hyun Young (creator)
Srivastava, Vikas (Advisor)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Polymers
Solid Mechanics
Fracture mechanics
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

A Study of Curvature Localization in Multilayer Graphene

Description:
We discover a new, curvature-localizing, subcritical buckling mode that produces a shallow-kink configuration in multi-layer graphene. Our density functional theory (DFT) analysis reveals the mode …
Year:
2019
Contributor:
Kothari, Mrityunjay (creator)
Kim, Kyung-Suk (Advisor)
Gao, Huajian (Reader)
Henann, David (Reader)
Stein, Derek (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Applied mathematics
Solid Mechanics
2D Materials
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

A Study on the Mechanical Properties of Solid Electrolyte Interphase in Lithium-Ion Batteries and their Influence on the Stability of Lithium Metal Anodes during Electrodeposition

Description:
Mechanical integrity of solid electrolyte interphase (SEI) plays an important role in determining the long-term reliability and performance of advanced high capacity anode materials. Failure …
Year:
2020
Contributor:
Yoon, Insun (creator)
Guduru, Pradeep (Advisor)
Gao, Huajian (Reader)
Abraham, Daniel (Reader)
Lucht, Brett (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Experimental
Solid Mechanics
Lithium ion batteries
Solid Electrolyte Interphase
Thin films
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

A Variational Mechanics Theory for Modeling the Evolution of Crack Networks in Composite Materials with Brittle Interfaces

Description:
Predicting crack patterns and toughness of structural biomaterials (SBs) is a complex problem due to their complicated microstructures. Most SBs are heterogeneous in nature and …
Year:
2019
Contributor:
Vijaykumar, Kaushik (creator)
Kesari, Haneesh (Advisor)
Bower, Allan (Reader)
Srivastava, Vikas (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Solid Mechanics
Fracture mechanics
phase field model
Mechanics
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

Aspects of High-Strain-Rate Microcavitation in Soft Solids

Description:
Inertial microcavitation rheometry (IMR) is an effective method for mechanical characterization of soft materials at high strain rates. In IMR, the dynamics of an isolated …
Year:
2022
Contributor:
Tzoumaka, Anastasia (creator)
Henann, David (Advisor)
Guduru, Pradeep (Reader)
Rodriguez, Mauro (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Finite element method
post-buckling analysis
Viscoelastic materials
biological tissues
anisotropic materials
Collection:
Engineering
Mechanics of Solids
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

Atomistic Simulations of Deformation and Fracture Mechanisms in Nanotwinned Nanowires and Biomaterials

Description:
Over the past decade, nanotwinned metals have attracted considerable attention due to their exceptional mechanical properties, such as ultra-high strength, good tensile ductility, high fracture …
Year:
2017
Contributor:
Yin, Sheng (creator)
Kim, Kyung-Suk (Reader)
Kumar, Sharvan (Reader)
Gao, Huajian (Advisor)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Biomechanics
Molecular dynamics--Computer simulation
Nanowires
Plasticity
Dislocations in metals
Metals--Hydrogen embrittlement
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Big-Data-Driven Multi-Scale Experimental Study of Nanostructured Block Copolymer’s Dynamic Toughness

Description:
In this thesis, we studied the dynamic toughening mechanisms of a hierarchically nanostructured copolymer, polyurea. We first quantitively measured the dynamic fracture toughness as well …
Year:
2022
Contributor:
Jin, Hanxun (creator)
Kim, Kyung-Suk (Advisor)
Gao, Huajian (Reader)
Guduru, Pradeep R. (Reader)
Karniadakis, George Em (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Solid Mechanics
Nanostructured materials
Deep Learning
Experimental mechanics
Collection:
Engineering
Mechanics of Solids
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 Modeling of Anisotropic Engineered Heart Tissue

Description:
Cardiac patch therapies have become a promising treatment to lower the risk of heart failure after myocardial infarct to restore heart function. Engineered tissue scaffolds …
Year:
2020
Contributor:
Bai, Yifei (creator)
Srivastava, Vikas (Advisor)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
tissue engineering
Myocardium--Regeneration
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

Continuum Modeling of Flow and Size-Segregation in Dense Granular Materials

Description:
Granular materials are mixtures of discrete, macroscopic particles. They are ubiquitous in nature as well as in everyday life -- in forms such as sand, …
Year:
2019
Contributor:
Liu, Daren (creator)
Henann, David (Advisor)
Kamrin, Kenneth (Reader)
Kim, Kyung-Suk (Reader)
Powers, Tom (Reader)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Granular materials
Collection:
Engineering
Mechanics of Solids
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

Deep indentation contact experiments with nonlinear model fitting

Description:
Over the past decades, the mechanical behavior of biological material has had a profound effect on research into human tissues and the development of medical …
Year:
2017
Contributor:
Yang, Jianzhe (creator)
Haneesh, Kesari (Advisor)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
contact experiments
nonlinear model fitting
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
Full Record

Deflection Approaches for Controlling Lithium Dendrite in All-solid-state Battery

Description:
Solid-state batteries (SSBs) represent a significant leap forward in energy storage technology, offering higher energy densities and improved safety over traditional lithium-ion batteries. However, the …
Year:
2024
Contributor:
Gan, Chenjie (creator)
Sheldon, Brian (Advisor)
Brown University. Engineering: Mechanics of Solids (sponsor)
Genre:
theses
Subject:
Fracture mechanics
Solid state battery
Collection:
Engineering
Mechanics of Solids
Theses and Dissertations
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Full Record

Items (1-20) out of 84 results