IUTAM Symposium on Mesoscopic Dynamics of Fracture Process and Materials Strength: Proceeding of the IUTAM Symposium held in Osaka, Japan, 6–11 July 2003

This volume contains the papers presented at the IUT AM Symposium of "Mesoscopic Dynamics of Fracture Process and Materials Strength", held in July 2003, at the Hotel Osaka Sun Palace, Osaka, Japan. The Symposium was proposed in 2001, aiming at organizing concentrated discussions on current understanding of fracture process and inhomogeneous deformation governing the materials strength with emphasis on the mesoscopic dynamics associated with evolutional mechanical behaviour under micro/macro mutual interaction. The decision of the General Assembly of International Union of Theoretical and Applied Mechanics (IUT AM) to accept our proposal was well-timed and attracted attention. Driven by the development of new theoretical and computational techniques, various novel challenges to investigate the mesoscopic dynamics have been actively done recently, including large-scaled 3D atomistic simulations, discrete dislocation dynamics and other micro/mesoscopic computational analyses. The Symposium attracted sixty-six participants from eight countries, and forty­ two papers were presented. The presentations comprised a wide variety of fundamental subjects of physics, mechanical models, computational strategies as well as engineering applications. Among the subjects, discussed are (a) dislocation patterning, (b) crystal plasticity, (c) characteristic fracture of amorphous/nanocrystal, (d) nano-indentation, (e) ductile-brittle transition, (f) ab-initio calculation, (g) computational methodology for multi-scale analysis and others.

Table of Contents:
Massively-Parallel Dislocation Dynamics Simulations.- Nondestructive Observation of Dislocation Structures Formed at Fatigued Copper and Stainless Steel Crystals.- A Discrete Dislocation Dynamics Investigation of Formation and Stability of Lomer Locks.- On the Use of Periodic Boundary Conditions in Dislocation Dynamics Simulations.- Atomistic Study of Edge Dislocations in FCC Metals: Drag and Inertial Effects.- Molecular Dynamics Study on the Characteristics of Edge and Screw Dislocations in Gamma/Gamma-Prime Microstructure of Ni-Based Superalloy.- Dislocation Interactions and Symmetries in BCC Crystals.- Discrete Dislocation Predictions of Single Crystal Fatigue Crack Growth.- A Crystal Plasticity Analysis for Accumulations of Geometrically Necessary Dislocations and Dipoles around Shear Band.- A New Model of Scale Dependent Crystal Plasticity Analysis.- A Molecular Dynamics Study of Mechanical Properties and Fractures of Amorphous Metal.- Elastic Properties of the Surfaces and Interfaces of Crystal and Amorphous Silicon.- Atomistic Simulation of Dislocation Generation at Surface Steps in Metals and Silicon.- On the Plasticity and Fracture of Semiconductors.- HVEM/AFM Studies on Crack Tip Plasticity in Si Crystals.- Irradiation Hardening in Austenitic Steels: Experiment and Simulation.- Dislocation Glide in the Presence of Either Solute Atoms or Glissile Loops.- Multiscale Analyses of High Strain Rate Deformation: Anisotropic Effects.- Atomic-Level Interaction of an Edge Dislocation with Localized Obstacles in Fcc and Bcc Metals.- Defect Nucleation.- Formation of Prismatic Dislocation Loop of Single Crystalline Aluminum under Nanoindentation.- Multiscale Modeling of Defect Nucleation and Reaction: Bulk to Nanostructures.- Discrete-Continuum Modeling of Metal Matrix Composites Plasticity.- Computational Evaluation of Micro- to Macroscopic Deformation Behavior of Amorphous Polymer with Slightly Heterogeneous Distribution of Initial Shear Strength.- Computational Modeling and Characterization of Materials with Periodic Microstructure using Asymptotic Homogenization Method.- Critical Behaviour Near the Crack / Dislocation Depinning Threshold.- Topological Soliton Dynamics in Media with Microscopic Rotations.- Dependence of Ductile and Brittle Response on Initial Energy Dissipation Mechanism at Crack Tip.- A Cohesive Zone Model and Interfacial Crack Problems.- Molecular Dynamics Simulation of Influence of Grain Boundary on Near-Threshold Fatigue Crack Growth.- Plasticity-Induced Martensitic Transformation around Semi-Elliptical Surface Cracks in Fatigue of an Austenitic Stainless Steel.- An Atomic Simulation of AFM-Based Nano Lithography Process for Nano Patterning.- Molecular Dynamics Study on Morphology and Strength of Copper Atomic-Cluster-Assembled Structure.- Competing Deformation Mechanisms in Nanocrystalline Metals.- Atomistic Study on Ideal Strength of Nanocrystal and Deformation Induced Nanostructures.- Continuum Description of Inhomogeneously Deforming Polycrystalline Aggregate Based on Field Theory.- Study on Strength of Microscopic Material by Simulations with Atom and Electron Models.- Ab Initio Study of Ideal Shear Strength.- Investigation of Glide Properties in Hexagonal Titanium and Zirconium: An Ab Initio Atomic Scale Study.- Computational Study of the Mechanical Properties of Alumina — Copper Interfaces: Ab Initio Calculations and Combination with Mesoscopic Simulations.- Development of Hybrid Electronic-Density-Functional/Molecular-Dynamics Simulation Schemes for Ceramics and Semiconductors.