Issue 48

A. Fesenko et alii, Frattura ed Integrità Strutturale, 48 (2019) 768-792; DOI: 10.3221/IGF-ESIS.48.70 783 The layer separation was observed in different cases of Poisson's ratio values. It was established which values of coefficient lead to the delamination of the lateral face of the semi-infinite layer. In these cases, the linearity of the problem is violated and the statement of the problem is not correct.  / 2 B A z 0 0.2 0.4 0.6 0.8 1  (0, 0, ) L x z   1/ 4 -0.0085 -0.0217 -0.0646 -0.1454 -0.2708 -0.5008   1/ 3 -0.0340 -0.0493 -0.0991 -0.1934 -0.3421 -0.6006   (0, 0, ) L W x z   1/ 4 -0 .0081 -0.0213 -0.0644 -0 .1452 -0.2707 -0.5008   1/ 3 -0.0295 -0.0457 -0.0964 -0.1917 -0.3411 -0.6006   (0, 0, ) L Т x z   1/ 4 -0.0140 -0.0262 -0.0689 -0.1501 -0.2771 -0.5086   1/ 3 -0.1087 -0.1145 -0.1609 -0.2584 -0.4193 -0.6981    (0, 0, ) L Т W x z   1/ 4 -0.0135 -0.0259 -0.0686 -0.1498 -0.2766 -0.5086   1/ 3 -0.1042 -0.1109 -0.1582 -0.2566 -0.4183 -0.6981 Table 1 : Normal stress along the axis z  2 B A z 0 0.2 0.4 0.6 0.8 1  (0, 0, ) L x z   1/ 4 0.0531 0.0379 -0.0085 -0.0853 -0.1860 -0.4046   1/ 3 0.0283 0.0130 -0.0336 -0.1109 -0.2120 -0.4317   (0, 0, ) L W x z   1/ 4 0.0535 0.0382 -0. 0082 -0.0851 -0.1859 -0. 4046   1/ 3 0.0327 0.0166 -0.0309 -0.1091 -0.2111 -0.4317   (0, 0, ) L Т x z   1/ 4 0.0482 0.0339 -0.0120 -0.0889 -0.1903 -0.4122   1/ 3 -0.0313 -0.0367 -0.0778 -0.1578 -0.2709 -0.5292    (0, 0, ) L Т W x z   1/ 4 0.0486 0.0342 -0.0118 -0.0888 -0.1902 -0.4122   1/ 3 -0.0268 -0.0332 -0.0752 -0.1561 -0.2700 -0.5292 Table 2 : Normal stress along the axis z The values of the normal stress are given in the tables (1)-(3) for the following parameters: the thickness of the layer h = 1 and unit temperature. They are investigated depending on the form of the load and temperature distribution. For convenience, the following notations are introduced:   L х the stress that occurs under the action of a compressive load;