RASTUSHCHAYA TRESHCHINA PRI PLOSKOI DEFORMATSII UPRUGO-PLASTICHESKOGO TELA.

The problem of stresses and strains at the edge of a crack in an ideal elastic-plastic material is considered. It is assumed that under the action of loads applied to the body outside the crack, and possibly other reasons, the crack grows, though so slowly that inertia forces are negligible. During the growth of a crack, the material undergoes irreversible deformations in its vicinity. This leads to a considerable decrease in their concentration (compared with the case when a material with a fixed crack is loaded). Plane deformation is considered. The first problem is tension across the crack, and the second one - tension along the crack.