Community Research and Development Information Service - CORDIS

Abstract

This book deals with fracturing and failure at compressive loading of brittle materials, based on research on rock and glass. Much attention is paid to the destruction process. The primary brittle fracture phenomenon, the `axial cleavage fracture' or the `extension fracture' i.e. the brittle fracture parallel to the pressure-axis, is the focus of this work. Axial fractures are present everywhere in the earth's crust as diaclases or joints, and the phenomenon also appears in the wall rock of tunnels and underground mine workings as well as in overloaded supporting pillars. In order to develop an acceptable theory, the mathematical models for the distribution of the internal forces in loaded materials (Boscovich, Gauchy and De Saint Venant) are analysed. To make the connection between stress theory and brittle fracture, Griffith's original ellipse model for the brittle fracture is used. A model for the axial cleavage or extension fracturing is then developed: the `ellipse-with-notch-and-variable-axis-ratio-model'.

Additional information

Authors: GRAMBERG J (EDITOR), Technical University Delft (NL)
Bibliographic Reference: EUR 11134 EN (1989) 250 pp.
Availability: A.A. Balkema, P.O. Box 1675, 3000 BR Rotterdam (NL)
ISBN: ISBN 90-6191-806-5
Record Number: 199010196 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en