Issue 53

A. Zakharov et alii, Frattura ed Integrità Strutturale, 53 (2020) 223-235; DOI: 10.3221/IGF-ESIS.53.19

On the base of the numerical solutions for the I n -integral and the J -integral defined as Eqn.(8) and Eqn.(11) respectively, the plastic SIF distributions for all test specimens considered were obtained as a function of the material properties, described by the strain hardening exponent n and the mode mixity M p ranging from 0 to 1. Note that the plastic SIF was calculated for the large-scale yielding approach by Eqn.(13).

a) b) c) Figure 12: The effect of the material properties on the plastic SIF distributions.

The results presented in Fig.12 illustrate a sensitivity of the plastic SIF to the elastic-plastic material properties and the loading conditions. It should be noted that for all test specimens configurations the plastic SIF is increased with increasing of the strain hardening exponent n .

a) b)

c) d) Figure 13: Distributions of the plastic SIF for the test specimens as a function of the material properties.

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