The j-integral for augmented double cantilever beams and its application to bonded joints

Abstract The J- integral for the double cantilever type specimen is obtained explicitly based on the assumption of a beam on the elastic/plastic foundation. The solution agrees with known solutions as special cases. Also discussed is the path independence of the J- integral for the bonded double cantilever joints where the integral path crosses the boundary of two dissimilar materials. Though contrary to some investigator's previous conclusion, the J- integral for bonded joints is found path independent within the framework of the strength of materials.

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