Issue 48

A. Fesenko et alii, Frattura ed Integrità Strutturale, 48 (2019) 768-792; DOI: 10.3221/IGF-ESIS.48.70 782 of size  2 B A the stress has minimal values and the separation of the layer from the side wall takes place. Stretching stresses are greater for the case of size  2 B A in comparison with the form  / 2 B A . Taking into account the temperature influence, one can note increasing compressing stress values and reducing tensile stress values. Figure 2 : Distribution of normal stress  (0, 0, ) AB x z Figure 3 : Distribution of normal stress   (0, 0, ) AB T x z It was also important to establish for which materials and loading sites a delamination of the side wall of the layer occurs. It was found that the separation of a semi-infinite layer from the side wall is not observed when the ratio  / 12 P C , where Р – the dimensionless intensity of constant mechanical loading, С – the dimensionless temperature. The side edge of the semi-infinite layer is detached for Poisson's ratio values    0 0.33 at the size  2 B A and for values    0 0.23 at the size  / 2 B A (Fig. 4). Figure 4 : Distribution of normal stress depends on Poisson's ratio values -0.4046 0.0531 -0.0085 1 -0.0073 0.4 0.2 -0.5008 -0.5073 z -0.4122 0.0482 -0.0140 1 -0.0108 0.4 0.2 -0.5948 -0.5008 z B = 2 A B = A /4 B = A /2 0.1 0.2 0.3 0.4 -0.3671 -0.2018 0.1276 µ В = 2 А В = А /2 B = 2 A B = A /4 B = A /2