Issue 59

S.K. Kourkoulis et alii, Frattura ed Integrità Strutturale, 59 (2022) 405-422; DOI: 10.3221/IGF-ESIS.59.27

(a)

15 20 25 30 35 40 45 50

y [mm]

L=50 mm L=30 mm L=75 mm

0

50

100

150

σ eqv [MPa]

(b)

180

180

L=50 mm L=30 mm L=75 mm

L=50 mm L=30 mm L=75 mm

140

140

σ eqv [MPa]

σ eqv [MPa]

100

100

60

60

0

1

2

3

4

0

7

14

21

28

Along the notch [mm]

Along the notch [mm]

(c) Figure 13: (a) The distribution of the equivalent stress in the disc for the three models with L=30, 50, 75 mm; The variation of the equivalent stress along (b) the vertical y-axis and (c) along one quarter of the perimeter of the notch with a detailed view around its corner. To make the above comment clearer, advantage is here taken of the analytic solution described in previous sections. The stress concentration, defined here as the ratio of the equivalent stress developed over the amplitude of the externally applied

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