The analytic solution of the mode I stress intensity factor for spot welds in lap-shear specimens is investigated based on the classical Kirchhoff plate theory for linear elastic materials. Approximate closed-form solutions for a finite square plate containing a rigid inclusion under counter bending conditions are first derived. Based on the J integral, the closed-form structural stress solution is used to develop the analytic solution of the mode I stress intensity factor for spot welds in lap-shear specimens of finite size. Finally, the analytic solution of the mode I stress intensity factor based on the stress solution for a finite square plate with an inclusion is compared with the results of the three-dimensional finite element computations for lap-shear specimens with various ratios of the specimen half width to the nugget radius. The results indicate that the mode I stress intensity factor solution based on a finite square plate with an inclusion agrees well with the computational results for lap-shear specimens.


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    Title :

    Analytic Solution of Mode I Stress Intensity Factor for Spot Welds in Lap-Shear Specimens


    Additional title:

    Sae Technical Papers


    Contributors:
    Wang, D.-A. (author) / Pan, J. (author) / Lin, P.-C. (author)

    Conference:

    SAE 2006 World Congress & Exhibition ; 2006



    Publication date :

    2006-04-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


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