PSI - Issue 40

Artyom A. Tokarev et al. / Procedia Structural Integrity 40 (2022) 426–432 Artyom A. Tokarev, Anton Yu. Yants / Structural Integrity Procedia 00 (2022) 000 – 000

431

6

37,5

37,0

36,5

36,0

35,5

35,0

34,5

34,0

Mean value of the stress intensity, MPa

0

200

400

600

800

1000

Grains number

Fig. 2. Dependence of the mean values of the stress intensity on the number of grains.

10% 12% 14% 16% 18%

0% 1% 1% 2% 2% 3% 3% 4% 4% 5% 5%

Relative standard deviation Relative change rate

0% 2% 4% 6% 8%

Relative change rate

Relative standard deviation

0

200

400

600

800

1000

Grains number

Fig. 3. Dependence of the relative standard deviations of the stress intensity and change rate of its mean value on the number of grains.

The resulting curve of the relative (relative to the mean values) standard deviation of stresses monotonously decreases with an increase in the number of grains, and the curve of the mean value (with its 95%-confidence