PSI - Issue 51

Victor Rizov et al. / Procedia Structural Integrity 51 (2023) 44–50 V. Rizov / Structural Integrity Procedia 00 (2022) 000–000

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Fig. 3. The normalized SERR plotted against 

 h h h / 2 1  ratio (curve 1 - at /

0.2

/ 1  h h

0.3

1  h h

, curve 2 – at

and curve 3 –

/ 1  h h

0.4

at

).

1 2 S S and 2 3 S S , of the beam which are

This is due to the decrease of the difference between the stiffness of parts,

located behind and ahead of the tip of crack 1, respectively.

Fig. 4. The normalized SERR plotted against 

 h h h h / 3 2 1   ratio (curve 1 - at 

 /

0.3

2 1   h h h

, curve 2 – at

and curve 3 – at 

 /



 /

0.4

0.5

2 1   h h h

2 1   h h h

).

It can be generalized that the SERR in the continuously inhomogeneous beam configuration with three parallel lengthwise cracks under axial forces depends strongly on the locations of the cracks along the height of the beam (this is clear from curves shown in Figs. 2, 3 and 4).