PSI - Issue 17

V.P. Matveenko et al. / Procedia Structural Integrity 17 (2019) 363–370 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 6. Ratios of strain values recorded by various sensors.

This situation was numerically simulated. Stress-strain state calculations on the model of angle shaped specimen with defect were performed. The calculation scheme of this problem is shown in figure 7.

Fig. 7. The calculation scheme of the angle shaped specimen with the defect.

The defect area (highlighted with the color) in this case is modeled by specifying in the defect zone substantially lower elastic moduli of the material. These calculations make it possible in a numerical experiment to qualitatively estimate the effect of the defect asymmetry on strain redistribution. The obtained numerical and experimental results demonstrate a similar qualitative behavior, namely, large strain values occur in the part of the sample opposite to the location of the defect.