Abstract:The choice of an offset-strain value in experimental determination of the yield surfaces, that controls the plasticity condition, the size and shape of the crack-tip plastic zone and the value of the correction factor for plasticity, is discussed. The results are illustrated by yield curves for aging steel in the metastable state under biaxial tension.1.Introduction. The shape and the size of the plastic zone near the crack tip affect fracture behavior of metallic materials, and the length of the plastic zone … Show more
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