instability;
plane problem of the elasticity theory;
inhomogeneous medium;
D O I:
10.1134/S002189441303019X
中图分类号:
O3 [力学];
学科分类号:
08 ;
0801 ;
摘要:
A possibility of degeneration of relationships between stresses and their derivatives with respect to the coordinates in the plane problem of the elasticity theory is considered. For particular dependences of the parameters of elasticity on coordinates, curves are given, for which degeneration conditions are satisfied. It is shown that even a small inhomogeneity of the medium causes stress instability.