Abstract
Recently, the non-linear crack mechanics (NLCM) was proposed by one of the authors, which gives a method for predicting the strength of a real object from the strength of specimens under large scale yielding. In the NLCM, the plastic strain at a crack tip obtained by FEM is used as the measure of mechanical severity. In this study, the effect of crack length on the usefulness of NLCM is discussed based on FEM analysis of the strips with a center crack subjected to tension.
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