IUTAM Symposium on Mesoscopic Dynamics of Fracture Process and Materials Strength : proceedings of the IUTAM symposium held in Osaka, Japan, 6-11 July, 2003 : volume in celebration of Professor Kitagawa's retirement

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. Front Matter....Pages i-xxxii Massively-Parallel Dislocation Dynamics Simulations....Pages 1-11 Nondestructive Observation of Dislocation Structures Formed at Fatigued Copper and Stainless Steel Crystals....Pages 13-22 A Discrete Dislocation Dynamics Investigation of Formation and Stability of Lomer Locks....Pages 23-33 On the Use of Periodic Boundary Conditions in Dislocation Dynamics Simulations....Pages 35-44 Atomistic Study of Edge Dislocations in FCC Metals: Drag and Inertial Effects....Pages 45-57 Molecular Dynamics Study on the Characteristics of Edge and Screw Dislocations in Gamma/Gamma-Prime Microstructure of Ni-Based Superalloy....Pages 59-68 Dislocation Interactions and Symmetries in BCC Crystals....Pages 69-78 Discrete Dislocation Predictions of Single Crystal Fatigue Crack Growth....Pages 79-86 A Crystal Plasticity Analysis for Accumulations of Geometrically Necessary Dislocations and Dipoles around Shear Band....Pages 87-96 A New Model of Scale Dependent Crystal Plasticity Analysis....Pages 97-106 A Molecular Dynamics Study of Mechanical Properties and Fractures of Amorphous Metal....Pages 107-116 Elastic Properties of the Surfaces and Interfaces of Crystal and Amorphous Silicon....Pages 117-127 Atomistic Simulation of Dislocation Generation at Surface Steps in Metals and Silicon....Pages 129-138 On the Plasticity and Fracture of Semiconductors....Pages 139-152 HVEM/AFM Studies on Crack Tip Plasticity in Si Crystals....Pages 153-162 Irradiation Hardening in Austenitic Steels: Experiment and Simulation....Pages 163-172 Dislocation Glide in the Presence of Either Solute Atoms or Glissile Loops....Pages 173-182 Multiscale Analyses of High Strain Rate Deformation: Anisotropic Effects....Pages 183-192 Atomic-Level Interaction of an Edge Dislocation with Localized Obstacles in Fcc and Bcc Metals....Pages 193-202 Defect Nucleation....Pages 203-211 Formation of Prismatic Dislocation Loop of Single Crystalline Aluminum under Nanoindentation....Pages 213-222 Multiscale Modeling of Defect Nucleation and Reaction: Bulk to Nanostructures....Pages 223-233 Discrete-Continuum Modeling of Metal Matrix Composites Plasticity....Pages 235-244 Computational Evaluation of Micro- to Macroscopic Deformation Behavior of Amorphous Polymer with Slightly Heterogeneous Distribution of Initial Shear Strength....Pages 245-254 Computational Modeling and Characterization of Materials with Periodic Microstructure using Asymptotic Homogenization Method....Pages 255-268 Critical Behaviour Near the Crack / Dislocation Depinning Threshold....Pages 269-278 Topological Soliton Dynamics in Media with Microscopic Rotations....Pages 279-288 Dependence of Ductile and Brittle Response on Initial Energy Dissipation Mechanism at Crack Tip....Pages 289-300 A Cohesive Zone Model and Interfacial Crack Problems....Pages 301-310 Molecular Dynamics Simulation of Influence of Grain Boundary on Near-Threshold Fatigue Crack Growth....Pages 311-320 Plasticity-Induced Martensitic Transformation around Semi-Elliptical Surface Cracks in Fatigue of an Austenitic Stainless Steel....Pages 321-330 An Atomic Simulation of AFM-Based Nano Lithography Process for Nano Patterning....Pages 331-341 Molecular Dynamics Study on Morphology and Strength of Copper Atomic-Cluster-Assembled Structure....Pages 343-353 Competing Deformation Mechanisms in Nanocrystalline Metals....Pages 355-363 Atomistic Study on Ideal Strength of Nanocrystal and Deformation Induced Nanostructures....Pages 365-380 Continuum Description of Inhomogeneously Deforming Polycrystalline Aggregate Based on Field Theory....Pages 381-390 Study on Strength of Microscopic Material by Simulations with Atom and Electron Models....Pages 391-399 Ab Initio Study of Ideal Shear Strength....Pages 401-410 Investigation of Glide Properties in Hexagonal Titanium and Zirconium: An Ab Initio Atomic Scale Study....Pages 411-420 Computational Study of the Mechanical Properties of Alumina — Copper Interfaces: Ab Initio Calculations and Combination with Mesoscopic Simulations....Pages 421-430 Development of Hybrid Electronic-Density-Functional/Molecular-Dynamics Simulation Schemes for Ceramics and Semiconductors....Pages 431-440 Back Matter....Pages 441-448 This Volume is the Proceedings of the IUTAM Symposium on Mesoscopic Dynamics of Fracture Process and Materials Strength, held at Osaka in 2003. It contains 41 papers by acknowledged experts covering innovative researches in the current solid mechanics field. The material deals with several topics related: Discrete Dislocation Dynamics; Dislocation Patterning; Large-scaled Molecular Dynamics Simulations; Ab-initio Calculations; Multiscale Modeling of Plasticity; Concurrent Modeling coupled with Finite Element Method; Crystal Plasticity; Fracture and Deformation Problems of Amorphous Materials, Semiconductor Materials and Nano-crystalline Materials. This volume will be of interest to research workers and graduate course students in theoretical and computational solid mechanics. In particular, those engaged in developing computational schemes and modeling the strongly scale-dependent phenomena, will find some of their current problems considered in this volume Proceedings of the IUTAM Symposium held in Osaka, Japan, 6-11 July 2003