Energy-Release Rate in Elastic-Plastic Fracture Problems

[+] Author and Article Information
S. Aoki, K. Kishimoto, M. Sakata

Department of Physical Engineering, Tokyo Institute of Technology, Ookayama, Meguroku, Tokyo 152, Japan

J. Appl. Mech 48(4), 825-829 (Dec 01, 1981) (5 pages) doi:10.1115/1.3157741 History: Received October 01, 1980; Revised February 01, 1981; Online July 21, 2009


It is shown that the energy-release rates associated with the translation, rotation, self-similar expansion and distortion of the fracture process region are expressed by the newly introduced integrals, Ĵ, L̂, M̂, and Î. These integrals can be defined even if there exist plastic deformation, thermal strains, body forces, and inertia forces. They include as special cases the J, L, and M integrals which have been defined by Knowles and Sternberg and discussed by Budiansky and Rice.

Copyright © 1981 by ASME
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