PSI - Issue 13

Gustavo Henrique Bolognesi Donato et al. / Procedia Structural Integrity 13 (2018) 1879–1887 Leonardo G. F. Andrade and Gustavo H. B. Donato / Structural Integrity Procedia 00 (2018) 000–000

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4. Results and discussion Figure 4 presents M results as a function of a/W for plane strain conditions and n = 10. It can be realized that M depends on a/W , but also on the dimensionless radius in which is evaluated (the figure contains results for r = 0.5, r = 1 and r = 2). It also depends on the adopted deviation percentage when compared to the MBL model (10% or 15% presented here). In general, for most geometries, an increase in a/W causes the decrease of M , which means larger stress triaxiality and higher limits for the validity of J -integral – J lim - it is in accordance with J-Q theory.

Fig. 4. Influence of a/W on M values for varying geometries. Plane strain and n = 10. The dashed region was expanded on the right to allow better comprehension.