Perepichka V. The contact interaction of edges of crack when bending of semi-infinite plates.

The dissertation is devoted to investigation of the contact interaction of crack edges in the deformation of bending. The phenomenon of cracks closure has been investigated in the two-dimensional statement for model of edges link on the right side-beam surface. The problems by the singular integral equations method have been solved. The influence of boundary on the distribution of contact reaction are investigated by approximate analytical and numerical solution of the problems integral equations. The stress and moment intensity factors are calculated and the breaking load is defined too. The problem statement about combined load of stain-bending type has been made for the semi-infinite plates with cracks for first time; the method of solution of the mixed problems has been worked out; the diagrams of the maximum equilibrium have been built for all load range. The one-side flexible covering influence on a strength in the tension of semi-infinite plates with cracks has been investigated. Domain use has the machine-building.