PSI - Issue 47

Victor Rizov / Procedia Structural Integrity 47 (2023) 3–12 Author name / Structural Integrity Procedia 00 (2019) 000–000

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  4 / G G B R C N  . The locations of the three cracks in radial direction is characterized by 1 4 / R R , 2 4 / R R and 3 4 / R R ratios.

1 4 / R R ratio (curve 1 – at non-linear behaviour of material,

Fig. 3. The strain energy release rate in non-dimensional form plotted against

curve 2 – at linear-elastic behaviour).

The material inhomogeneity is characterized by q .

Fig. 4. The strain energy release rate in non-dimensional form plotted against H (curve 1 – at

0.003 4  R m, curve 2 – at

0.004 4  R

0.005 5  R m).

m and curve 3 – at

It is assumed that 0.01   . The influence of material inhomogeneity on the longitudinal fracture is illustrated in Fig. 2 where the strain 0.005 4  R m, 1.6  p , 0.2  H , 0.00002   and