A Fracture Theory for Brittle Anisotropic Materials

[+] Author and Article Information
T. G. Priddy

Applied Mechanics Division, Sandia Laboratories, Albuquerque, N. Mex.

J. Eng. Mater. Technol 96(2), 91-96 (Apr 01, 1974) (6 pages) doi:10.1115/1.3443201 History: Received February 27, 1973; Revised November 05, 1973; Online August 17, 2010


This paper outlines the development of a general macroscopic failure theory. The result is a relatively simple cubic equation where interaction coefficients for tension-tension and compression-compression strengths may be defined separately. Approximations for biaxial and triaxial normal stress interactions are included to reduce the number of experimental data to nine for brittle three-dimensionally orthotropic materials and to two for brittle isotropic materials. A necessary condition that the theory closely describe brittle isotropic material strength is satisfied for a comprehensive set of cast iron biaxial strength data. The surface is graphically illustrated for various materials.

Copyright © 1974 by ASME
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