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Abstract
In this paper bond-line cracks in assembled plate structures are investigated. A multi-region boundary element formulation is used to model the assembly and to perform the analysis. Once the solution at the boundary has been obtained, energy methods are used to extract relevant fracture parameters from the boundary values. The energy release rate (G) method and a new J-integral formulation are implemented for interlaminar cracks in shear deformable plates. The energy release rate and the J-integral are then decomposed into stress intensity factors and their value along the bond-line is computed by means of a displacement discontinuity method.
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