PSI - Issue 26

Victor Rizov et al. / Procedia Structural Integrity 26 (2020) 86–96 Rizov / Structural Integrity Procedia 00 (2019) 000 – 000

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g d m m / ratios on the lengthwise fracture behaviour is studied too.

g l K K / and

The influence of

Fig. 5. The strain. energy release rate in non-dimensional form plotted against d g s s / ratio (curve 1 - at / l g s s 0.5 =

, curve 2 – at

/ l g s s

/ l g s s

1.0 =

2.0 =

and curve 3 – at

).

g l K K / ratio in Fig. 4 at

For this purpose, the strain energy release rate in non-dimensional form is plotted against

g d m m / ratios. It can be observed in Fig. 4 that the strain energy release rate decreases with increasing of

three

g l K K / ratio. The increase of

g d m m / ratio leads also to decrease of the strain energy release rate (Fig. 4).

d g f f / ratio (curve 1 – at /

l g f f

0.5 =

, curve 2 – at

Fig. 6. The strain energy release rate in non-dimensional form plotted against

/ l g f f

/ l g f f

1.0 =

2.0 =

and curve 3 - at

).

The effects of the continuous variation of s along the width and height of the beam on the lengthwise fracture are evaluated by performing calculations of the strain energy release rate at various d g s s / and l g s s / ratios. The results obtained are shown in Fig. 5 where the strain energy release rate in non-dimensional form is plotted against d g s s / ratio at three l g s s / ratios. The curves in Fig. 5 indicate that the strain energy release rate increases with increasing of d g s s / and l g s s / ratios.