PSI - Issue 25

Victor Rizov / Procedia Structural Integrity 25 (2020) 112–127

125

14

Author name / Structural Integrity Procedia 00 (2019) 000–000

/ tLB E E

0.6

/ cLD E E

0.7

/ cLD E E

0.5

 cLB

 cLB

 cLB

,

and

.

tUB E E /

/ cUD E E

0.5

 cUB

Fig. 11. The strain energy release rate in non-dimensional form plotted against

ratio (curve 1 –

at ,

cUB

/ cUD E E

1.0

/ cUD E E

1.5

 cUB

 cUB

and curve 3 – at

).

curve 2 – at

tUB E E /

The curves shown in Fig. 11 indicate that the strain energy release rate decreases with increasing of

cUB

cUD E E /

tLB E E /

and

ratios. The strain energy release rate in non-dimensional form is plotted against

ratio

cUB

cLB

cLD E E /

/ tUB E E

0.5

/ cUD E E

0.6

 cUB

 cUB

in Fig. 12 at three

ratios for

and

.

cLB

tLB E E /

/ cLD E E

0.5

 cLB

Fig. 12. The strain energy release rate in non-dimensional form plotted against

ratio (curve 1 –

at ,

cLB

/ cLD E E

1.0

/ cLD E E

1.5

 cLB

 cLB

and curve 3 – at

).

curve 2 – at

tLB E E /

cLD E E /

One can observe in Fig. 12 that the increase of

and

ratios leads to decrease of the strain

cLB

cLB

energy release rate.