文档介绍：This book outlines the basic science underlying the prediction of stress
and velocity distributions in granular materials. It takes the form of a
textbook suitable for post-graduate courses, research workers and for
use in design offices. The nature of a rigid-plastic material is discussed
and parison is made between the Coulomb and Conical (extended
von Mises) models. The methods of measuring material properties are
described and an interpretation of the experimental results is considered
in the context of the Critical State Theory.
The early chapters consider the traditional methods for predicting
the forces on planar retaining walls and the walls of bunkers and
hoppers. These approximate methods are described and their accuracy
discussed. Later chapters give details of the exact methods of stress
and velocity prediction, covering both the radial stress and velocity
fields and the method of characteristics. The analysis of stress and
velocity discontinuities is also considered as is the prediction of the
mass/core flow transition. The final chapter covers the discharge rate
of materials through orifices, dealing with both the correlations of
experimental results and theoretical prediction. The influence of
interstitial pressure gradients is also considered leading to an analysis
of the flow of fine materials and the effects of air-augmentation. The
book ends with an assessment of Jenike's method for predicting the
circumstances under which cohesive arching prevents flow.
The book will be an invaluable text for all those working with or
doing research into granular materials. Exercises and solutions are
provided which will be particularly useful for the student.
STATICS AND KINEMATICS
OF GRANULAR MATERIALS
STATICS AND KINEMATICS
OF GRANULAR MATERIALS
R. M. NEDDERMAN
Department of Chemical Engineering
University of Cambridge
and Ely Fellow of
Trinity College, Cambridge
CAMBRIDGE
UNIVERSITY PRESS
CAMBRIDGE UNIVERSITY PRESS