STP601

    Three-Dimensional Stress Distribution of a Double-Cantilever Beam with a Side Notch

    Published: Jan 1976


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    Abstract

    The effect of a side notch used as a crack guide in a double-cantilever-beam specimen is investigated. The resulting stress distribution along the section of symmetry ahead of the notch is obtained from a three-dimensional photoelastic model. The effect of the side notch through the thickness and down the side of the specimen is determined. After stress freezing, the model was sliced along principal planes. Along the x–x plane of symmetry, the principal stresses were determined by graphical integration of Filon's transformation of the Lamé-Maxwell equations and by subslicing along the x–z plane. Results of the investigation are in good agreement with those of other investigators. The side notch increases the value of the maximum tensile stress at the intersection of the starter notch and the side notch by approximately 22 percent.

    Keywords:

    crack propagation, double cantilever beams, notch test stresses, stress-intensity factor, photoelasticity, fractures (materials)


    Author Information:

    Kirkwood, WF
    Mechanical engineers, Lawrence Livermore Laboratory, University of California, Livermore, Calif.

    Prado, ME
    Mechanical engineers, Lawrence Livermore Laboratory, University of California, Livermore, Calif.


    Paper ID: STP28649S

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP28649S


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