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Determination of the dynamic stress intensity factor of a moving crack by a numerical method

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Abstract

A numerical procedure to determine the dynamic stress intensity factor of a moving crack under antiplane strain condition is presented. Three problems are solved to illustrate the solution algorithm. The first problem concerns a finite rectangular sheet with a moving edge crack under the traction boundary conditions. The second problem is identical to the first one except that the traction boundary conditions are replaced by the displacement boundary conditions. In the third problem, a finite circular sheet containing a propagating radial crack is solved.

Résumé

On présente une procédure de détermination du facteur d'intensité de contraintes relatif à une fissure en mouvement sous des conditions de déformation antiplanaire. Pour illustrer l'algorithme utilisé, on solutionne trois problèmes. Le premier concerne une tole mince rectangulaire finie comportant une fissure de bord en mouvement sous des sollicitations de traction appliquées aux limites. Le deuxième est identique au premier, mais les conditions de traction aux limites sont remplacées par des conditions de déplacement. Dans le troisième problème, on résoud le cas d'une feuille circulaire finie comportant une fissure radiale en cours de propagation.

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Chiang, C.R. Determination of the dynamic stress intensity factor of a moving crack by a numerical method. Int J Fract 45, 123–130 (1990). https://doi.org/10.1007/BF00037170

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  • DOI: https://doi.org/10.1007/BF00037170

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