The Configurational Force Concept in Elastic-Plastic Fracture Mechanics−Instructive Examples

Abstract:

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This paper deals with the determination of the crack driving force in elastic-plastic materials and its correlation with the J-Integral approach. In a real elastic-plastic material, the conventional J-integral cannot describe the crack driving force. This problem has been solved in Simha et al. [1], where the configurational force approach was used to evaluate in a new way the J-integral under incremental plasticity conditions. The crack driving force in a homogeneous elastic-plastic material, Jtip, is given by the sum of the nominally applied far-field crack driving force, Jfar, and the plasticity influence term, Cp, which accounts for the shielding or anti-shielding effect of plasticity. In this study, the incremental plasticity J-integral and the crack driving force are considered for a stationary and a growing crack.

Info:

Periodical:

Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee

Pages:

297-300

DOI:

10.4028/www.scientific.net/KEM.417-418.297

Citation:

R. Schöngrundner et al., "The Configurational Force Concept in Elastic-Plastic Fracture Mechanics−Instructive Examples", Key Engineering Materials, Vols. 417-418, pp. 297-300, 2010

Online since:

October 2009

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Price:

$35.00

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