A NON-CONVENTIONAL VIEW ON ROCK MECHANICS AND FRACTURE MECHANICSFunded under: FP1-RADWASTOM 3C
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'.
Bibliographic Reference: BOOK: EUR 11134 EN (1989) 250 PP., AA BALKEMA, ROTTERDAM (NL)
Record Number: 1989128010700 / Last updated on: 1990-11-09
Available languages: en