The Timoshenko beam theory was used to model cracked beams and to calculate the total strain-energy release rate. The root rotations of the beam segments at the crack tip were estimated based on an approximate two-dimensional elasticity solution. By including the strain energy released due to the root rotations of the beams during crack extension, the strain-energy release rate obtained using beam theory agrees very well with the two-dimensional finite element solution. Numerical examples were given for various beam geometries and loading conditions. Comparisons with existing beam models were also given.


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    Title :

    Improved method for calculating strain energy release rate based on beam theory


    Contributors:
    Sun, C. T. (author) / Pandey, R. K. (author)

    Published in:

    Publication date :

    1994-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English