Limiting state of a semiinfinite plate with edge crack in bending with tension

We solve the problem of stressed state and limiting equilibrium of a semiinfinite plate with edge crack under the action of symmetric bending with tension. In the two-dimensional case, the possibility of crack closure is taken into account by using a model of contact along a line. An algorithm for the numerical solution of the mixed problem is proposed. The diagram of limiting equilibrium of the cracked plate shows that the range of safe states enlarges if the effect of crack closure is taken into account.