Dynamic Response of Granular and Porous Materials under Large and Catastrophic Deformations

ISBN-13: 9783540008491 / Angielski / Twarda / 2003 / 426 str.

Kolumban Hutter;Nina Kirchner

Opis

A "Sonderforschungsbereich" (SFB) is a programme of the "Deutsche For schungsgemeinschaft" to financially support a concentrated research effort of a number of scientists located principally at one University, Research La boratory or a number of these situated in close proximity to one another so that active interaction among individual scientists is easily possible. Such SFB are devoted to a topic, in our case "Deformation and Failure in Metallic and Granular M aterialK', and financing is based on a peer reviewed proposal for three (now four) years with the intention of several prolongations after evaluation of intermediate progress and continuation reports. An SFB is terminated in general by a formal workshop, in which the state of the art of the achieved results is presented in oral or I and poster communications to which also guests are invited with whom the individual project investigators may have collaborated. Moreover, a research report in book form is produced in which a number of articles from these lectures are selected and collected, which present those research results that withstood a rigorous reviewing pro cess (with generally two or three referees). The theme deformation and failure of materials is presented here in two volumes of the Lecture Notes in Applied and Computational Mechanics by Springer Verlag, and the present volume is devoted to granular and porous continua. The complementary volume (Lecture Notes in Applied and Com putational Mechanics, vol. 10, Eds. K. HUTTER & H."

Spis treści

I. Avalanches, Debris and Mud Flows.- Rapid Granular Avalanches.- Gravity-Driven Rapid Shear Flows of Dry Granular Masses in Topographies with Orthogonal and Non-Orthogonal Metrics.- A Lagrangian-Eulerian Finite-Volume Method for Simulating Free Surface Flows of Granular Avalanches.- Experimental Information on the Dynamics of Dry-Snow Avalanches.- Numerical Simulation of Dry-Snow Avalanche Flow over Natural Terrain.- Particle Image Velocimetry (PIV) for Granular Avalanches on Inclined Planes.- Existence of Avalanching Flows.- Group Theoretic Methods and Similarity Solutions of the Savage—Hutter Equations.- II. Porous and Granular Materials. Fundamentals and Dynamical Processes.- Dynamics of Hypoplastic Materials: Theory and Numerical Implementation.- Acoustic Waves in Porous Solid—Fluid Mixtures.- Dissipation Influence on Cooling of 2-Dimensional Hard Needle Systems.- Induced Anisotropy in Rapid Flows of Nonspherical Granular Materials.- III. Porous and Granular Materials. Subscale-and Micromechanical Effects.- Modelling Particle Size Segregation in Granular Mixtures.- Gravity-Induced Segregation of Cohesionless Granular Mixtures.

Blurb

 This book summarizes the results of a research programme financed by the "Deutsche Forschungsgemeinschaft" in the field of deformation and failure in granular and porous media. It presents the recent engineering as well as mathematical key aspects of this field for a broad community. Its main focus is on the dynamics response under large and catastrophic deformations, covering the fundamentals and dynamical processes of porous and granular materials as well as their related sub-scale and micro-mechanical effects.Special emphasis is placed on the modeling and theory of avalanches, debris and mud flows.