Determination of the driving force acting on a kinked crack |
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| Authors: | K. C. Le H. Schütte H. Stumpf |
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| Affiliation: | Lehrstuhl für Allgemeine Mechanik, Ruhr-Universit?t Bochum Universit?tsstr. 150, D-44780 Bochum, Germany, DE
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| Abstract: | Summary A variational principle is formulated for a body containing a crack in equilibrium. An expression for the driving force acting on the crack admitting nontangential virtual crack extensions is derived. As a consequence of a variational principle, crack equilibrium criterion under mixed-mode loading conditions is obtained. For general 3-D problems, the magnitude as well as the direction of the driving force are precisely determined. Fracture locus for three combined modes is calculated. Received 18 June 1998; accepted for publication 7 January 1999 |
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| Keywords: | mixed mode kinked crack driving force variational principle |
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