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An augmented double cantilever beam model for studying crack propagation and arrest

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Abstract

An improved analytical model for the double cantilever beam fracture specimen is developed by treating a finite length beam which is partly free and partly supported by an elastic foundation. The results obtained are shown to be in excellent agreement with established data for initial crack extension. Some preliminary computational results for unstable crack propagation are also presented.

Résumé

On a développé un modèle analytique amélioré pour décrire l'éprouvette de mécanique de rupture en forme de double poutre cantilever. A cet effet, on a considéré une poutre de longueur finie en partie libre et en partie supportée par un appui élastique.

Les résultats obtenus sont en excellent accord avec les données qui ont été recueillies sur l'extension initiale des fissures.

On présente également quelques résultats préliminaires de calculs dans le cas de la propagation instable des fissures.

Zusammenfassung

Es wurde ein verbessertes analytisches Modell zur Beschreibung der Doppelkantileverprobe entwickelt.

Hierzu wurde ein Träger endlicher Länge betrachtet, welcher zum Teil frei schwebt, zum Teil von einer elastischen Stütze getragen wird.

Die erzielten Ergebnisse stehen in ausgezeichneter Übereinstimmung mit den Werten welche für die Anfangsausbreitung von Rissen erhaltenwurden.

Außerdem werden erste Rechenergebnisse für den Fall einer instabilen Rißausbreitung mitgeteilt.

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Authors and Affiliations

  1. Advanced Solid Mechanics Division, Battelle Memorial Institute, Columbus, Ohio

    M. F. Kanninen

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  1. M. F. Kanninen
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Kanninen, M.F. An augmented double cantilever beam model for studying crack propagation and arrest. Int J Fract 9, 83–92 (1973). https://doi.org/10.1007/BF00035958

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  • DOI: https://doi.org/10.1007/BF00035958

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