Abstract
A boundary element technique, based on a pure displacement discontinuity formulation, is presented to solve general problems of interaction between cracks. The procedure allows detailed information and high precision at the expense of a reasonable computational effort. The comparisons with exact solutions and numerical ones for elementary case show a good performance of the method in the case of strong interacting cracks too. The interaction of a main crack with some microcrack arrays is studied in terms of amplification and shielding of the SIF at the main crack tip.
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