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Meeting 2013 TMS Annual Meeting & Exhibition
Symposium Modeling and Experimental Validation of Multiscale Mechanical Behavior from Atomic Scale to Macro Scale
Presentation Title Improving Estimates of Fretting Wear Rates through Microscale Simulations
Author(s) Areg Hayrapetian, Michael Demkowicz
On-Site Speaker (Planned) Areg Hayrapetian
Abstract Scope We present an approach for calculating wear coefficients through simulation of wear mechanisms at the micron length-scale including asperity contact, fracture, and third-body interaction. The simulations are based on a variant of the discrete element method and yield estimates for wear coefficients that may later be used to predict the shape and depth of wear scars. We apply this method to improving estimates for nuclear fuel lifetimes under conditions that lead to grid-to-rod fretting (GTRF), which is a frequent cause of fuel failures. This project was supported by the Consortium for Advanced Simulation of Light Water Reactors (CASL): a Department of Energy (DOE) Energy Innovation Hub.
Proceedings Inclusion? Planned:

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A Physics-Based Understanding of Size-Effects in FCC Single Crystals
A Predictive Model for Microstructure Evolution in Metallic Multilayers with Immiscible Constituents
A Single Crystal Yield Model for Tantalum Based on Atomistic Simulations
Ab Initio DFT Modeling of the Dislocation and Its Mobility in TiN Ceramic
An Explanation of the Power-Exponent in the Size Effect on Strength in Micro-Crystals
Analysis of Pole Mechanisms for (10-12) Twin Nucleation in Mg
Anomalous High Temperature Response of Twin Boundaries in FCC Metals
Atomics Based Predictive Mechanism of Hydrogen Embrittlement in Iron
Atomistic Modeling of Deformation Mechanisms and Crack Initiation at Grain Boundaries
Atomistic Simulations of Grain Boundary Associated Distortion in Metallic Materials
Atomistics Analysis of Dislocation Structure and Mechanisms in Semi-Coherent Nanoscale Epitaxial Laminates
Bridging Atomistic and Dislocation Dynamics across Time and Length Scales
Characterization of Heterogeneous Deformation and Slip System Activation Along Grain Boundaries in Pure Tantalum
Combined Experimental and Computational Study of the Evolution of Local Slip Activity during Heterogeneous Deformation of Polycrystalline Ta, Ti, and Ti Alloys
Combining Laue Microdiffraction and Digital Image Correlation for Improved Measurements of the Elastic Strain Field with Micrometer Spatial Resolution
Comparison of Deformation Behavior in Tantalum Carbides
Constrained Network Parametric Dislocation Dynamics (CNPDD) in Finite Volumes
Continuum Dislocation Dynamics Modelling of Mesoscale Deformation of Single Crystals
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Defect Accumulation during Super-Elastic Load Cycling of Gum Metal.
Deformation Behavior in Nano-Polycrystalline Zirconium
Deformation Twinning in Cu/Nb Nanolamellar Composites Fabricated by Accumulative Roll Bonding (ARB) Measured Using Electron Backscatter Diffraction(EBSD)
Dislocation Microstructure Analysis of Multi-junctions in Large Scale Dislocation Dynamics Simulations of BCC Metals
EBSD and TEM Studies to Inform and Guide the Mechanistic Modelling of Deformation in P22 Steel
Effect of Zero-Point Vibrations on the Peierls Stress of Dislocations
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Energetics and Length Scales of Point Defect and Element Segregation to Grain Boundaries in Fe
Estimation of Dislocation Nucleation Stresses from Nanoindentation by Combined Multiscale Modeling and Experiment
Experimental Observations of the Interactions between Dislocations and Twin Boundaries in Nanocrystalline Face-Centred Cubic Metallic Materials
Exploring the Evolution and Deformation of Twinned Nanocrystalline Metals with Microscale Kinematic Metrics and Molecular Dynamics Simulations
Fabrication and Deformation in Nanocrystalline and Bi-Crystalline Nano Structures
G-10: Mechanical Properties of Al-5182 Processed by Asymmetric Rolling
G-11: Multiscale Modeling and Experiments of Deformation of Nanoscale Metallic Multilayer Systems
G-12: Plastic Deformation of a Nano-Precipitate Strengthened Ni-Base Alloy Investigated by Complementary In-Situ Neutron Diffraction Measurements and Molecular-Dynamics Simulations
G-13: Simulation of Casting Process for Grinding Disc Seat
G-14: Spatially Resolved Acoustic Spectroscopy for Component-Scale Orientation Imaging: Case Studies in Alloys for Aerospace Propulsion Applications
G-15: Strengthening Mechanisms of Highly Textured Cu/Co Multilayers
G-16: The Small-Scale Deformation Behaviour of Tungsten
G-17: In Situ Virtual Diffraction Analysis of Alumina during Ion Bombardment
G-18: Mechanical Behaviors of Nanostructures of Low Melting Temperature Metals as Revealed by Synchrotron Laue X-Ray Microdiffraction
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G-1: A Defect Avalanche Approach To Characterize Inelastic Yield And Flow In Nanocrystalline Metals
G-20: Modeling Interfaces in Solids: From Atomic Scale to Meso/Macro-Scale
G-21: A Thermomechanical Damage Inelastic Model For amorphous Polymers
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G-6: Effects of Hot Compressive Dwell on Fatigue Crack Growth Behavior of Cast Aluminum Alloys
G-7: In-Situ Observations and Simulation of Damage Accumulation during Plastic Deformation of Polycrystals
G-8: Influence of grain boundary structure on interfacial fracture under tensile loading: Cohesive zone model informed by atomistic simulations
G-9: Mechanical Behavior and Thermal Stability of Differently Oriented Nanotwinned Ag Films
Geometrical Construction of (Ʃ/ Ʃn )mǂ1 - 90 Twist Quasi-Periodic Bi-Crystals andTheir Quasi-Periodic Grain Boundaries in Cubic Crystals
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High-Resolution Image Correlation, EBSD-Based Characterization and Simulation of Crack Tip and Grain Boundary Deformation in Al-Cu Alloys
High Energy X-Ray Diffraction Microscopy Tracking of Internal Polycrystal Responses to Tensile Deformation
High Temperature Mechanical Characterization and Modeling of Al/SiC Nanolaminates
Improving Estimates of Fretting Wear Rates through Microscale Simulations
In-Situ TEM Study of Interfacial Faceting of Cu-Nb Nano-Lamellae during Indentation
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Massively Parallel Molecular Statics Simulations of the Percolation of Dislocations through a Random Array of Forest Dislocation Obstacles in FCC Nickel
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Modeling of Effective Thermal Conductivities of Pt-Cu Alloy Series as a Function of Temperature in the Liquid Region
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Modelling of Size Effects on Behavior of Thin Sheet Metals for Bipolar Plate Manufacturing
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Multiscale Simulation of Dislocation-Σ11 Grain Boundary Interaction in FCC Materials
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Partial Dislocation Controlled Plasticity in Nanometer-Sized Au Single Crystal
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Plasticity in Small Volume: Stochastic Not Deterministic
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Relating Hierarchical Structure to the Blackness of Butterfly Wings
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Size Effects in Plastic Deformation: Modeling and Experiment
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