STP627

    Dynamic Analysis of Crack Propagation and Arrest in the Double-Cantilever-Beam Specimen

    Published: Jan 1977


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    Abstract

    A simple one-dimensional analysis model was developed previously for rapid unstable crack propagation and arrest in wedge-loaded rectangular double-cantilever-beam (DCB) specimens. In this paper, the model is generalized to treat contoured specimens and machine-loading conditions. The development starts from the basic equations of the two-dimensional theory of elasticity with inertia forces included. Exploiting the beam-like geometry of the DCB specimen results in governing equations that are analogous to a variable-height Timoshenko beam partly supported by a generalized elastic foundation. These are solved by a finite-difference method. Crack propagation arrest results illustrating the effect of specimen geometry and loading conditions are described in the paper.

    Keywords:

    fracture properties, crack propagation, crack arrest, beam on elastic foundations, models, dynamic toughness, double cantilever beam specimen


    Author Information:

    Kanninen, MF
    Senior research scientist and principal researcher, Applied Solid Mechanics Section, Battelle Columbus Laboratories, Columbus, Ohio

    Popelar, C
    Professor, Ohio State University, Columbus, Ohio

    Gehlen, PC
    Senior research scientist and principal researcher, Applied Solid Mechanics Section, Battelle Columbus Laboratories, Columbus, Ohio


    Paper ID: STP27378S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP27378S


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