Iutam Symposium On Mechanics Of Granular And Porous Materials: Proceedings Of The Iutam Symposium Held In Cambridge, U.k., 15-17 July 1996 (solid Mechanics And Its Applications)

This volume constitutes the Proceedings of the IUT AM Symposium on Mechanics of Granular and Porous Materials, held in Cambridge from 15th to 17th July 1996. The objectives were: 1. To review existing experimental results and practical phenomena on the flow and compaction of particulate media; 2. To review the current state of constitutive models, and their implementation for predicting the macroscopic response. 3. Identification of the shortcomings of existing models and procedures in understanding practical phenomena. The Symposium brought together the research communities of solid mechanics, materials science, geomechanics, chemical engineering and mathematics to review current knowledge of the flow and compaction of granular and porous media. The meeting emphasised the development and use of constitutive laws to model practical processes such as mixing, drainage and drying, compaction of metal and ceramic powders and soils, and instabilities associated with these processes. A common theme was to develop constitutive models from an understanding of the underlying physical mechanisms of deformation and fracture. It was particularly rewarding to find that the separate research communities came together during the meeting and came to a consensus as to the main mechanisms of deformation and failure of particulate and porous solids. Front Matter....Pages i-xii The Viscoplastic Compaction of Powders....Pages 1-10 Inelastic Behavior of Random Arrays of Identical Spheres....Pages 11-22 Fractal Fragmentation and Frictional Stability in Granular Materials....Pages 23-34 Clastic Mechanics....Pages 35-46 Compressible Porous Media: Toward a General Theory....Pages 47-56 Mechanical Behaviour of Mixtures of Kaolin and Coarse Sand....Pages 57-68 Constitutive Modelling of Response of Granular Interface Layers....Pages 69-82 A Characteristic State Plasticity Model for Granular Materials....Pages 83-94 On the Constitutive Potential for Powder and Porous Bodies....Pages 95-103 Scaling Laws in the Consolidation of Powder Compacts....Pages 105-116 Constitutive Equation for Compaction of Ceramic Powders....Pages 117-128 A Constitutive Model for the Sintering of Fine Grained Alumina....Pages 129-138 Importance of Incremental Nonlinearity in the Deformation of Granular Materials....Pages 139-150 The Use of Legendre Transformations in Developing the Constitutive Laws of Geomechanics from Thermodynamic Principles....Pages 151-159 Derivation of Incremental Stress-Strain Response for Plasticity Models Based on Thermodynamic Functions....Pages 161-172 Local Contact Behaviour of Viscoplastic Particles....Pages 173-184 Cement Among Grains in Rocks....Pages 185-192 Three-Dimensional Discrete Mechanics of Granular Materials....Pages 193-202 Numerical Analysis of Clay Particle Assemblies....Pages 203-213 On Gradient-Enhanced Damage Theories....Pages 215-226 Remarks on Coaxiality in Fully Developed Gravity Flows of Dry Granular Materials....Pages 227-238 Modelling Mathematically the Flow of Granular Materials....Pages 239-250 The Double-Shearing Velocity Equations for Dilatant Shear-Index Granular Materials....Pages 251-262 Distinct Element Simulations and Dynamic Microstructural Imaging of Slow Shearing Granular Flows....Pages 263-274 Granular Avalanches on Complex Topography....Pages 275-286 Tracking Particles in Tumbling Containers....Pages 287-298 On the Reality of Antisymmetric Stresses in Fast Granular Flows....Pages 299-311 Internal Friction Angles: Characterization Using Biaxial Test Simulations....Pages 313-324 A Mechanistic Model for Attrition of Particles in Flow Systems....Pages 325-334 Simple Shear of Porous Materials at Large Strains....Pages 335-342 Formation of Shear Bands in Models of Granular Materials....Pages 343-352 Micro-Structure Developed in Shear Bands of Dense Granular Soils and its Computer Simulation — Mechanism of Dilatancy and Failure—....Pages 353-364 The Evolution of Anisotropy in Porous Materials and its Implications for Shear Localization....Pages 365-376 Shear Band Localization in Fluid-Saturated Granular Elasto-Plastic Porous Media....Pages 377-388 Consolidation of Metal Coated Fibers....Pages 389-402 Analysis for Die Compaction of Metal Powders....Pages 403-413 The Modelling of the Influence of Wall Friction on the Characteristics of Pressed Ceramic Parts....Pages 415-426 Drainage and Drying of Deformable Porous Materials: One Dimensional Case Study....Pages 427-438 Mechanics of Sand Production for Acting Wells....Pages 439-450 Back Matter....Pages 451-452 This volume contains 39 contributions presented at the IUTAM Symposium on Mechanics of Granular and Porous Materials. The Symposium reviewed the current understanding of the constitutive behaviour of porous and granular solids, based on experimental data, numerical simulations and micromechanical models. An interdisciplinary approach is adopted, involving the fields of solid mechanics, materials science, geomechanics, chemical engineering and mathematics. This book emphasises the development and use of constitutive laws to model practical processes such as mixing, drainage and drying, compaction of metal and ceramic powders and soils, and instabilities associated with these processes. A common theme is the development of constitutive models from an understanding of the underlying physical mechanisms of deformation and fracture. The volume will be of interest to researchers and to engineers concerned with measuring and predicting the response of granular and porous solids for structural applications. Proceedings of the IUTAM Symposium held in Cambridge, UK, 15-17 July 1996