Inelastic Deformation of a Spherical Shell Weakened by a Number of Circular Holes

The statement of static problems for elastoplastic spherical shells with a number of identical circular holes is presented and the technique of numerical solution of nonlinear problems of the given class is developed. The technique is based on the use of the secondary-stress and variational vector-difference methods. For a shell under internal pressure, it is studied how plastic deformations and geometrical parameters affect distributions of stresses, strains, and displacements in the zone of their concentration.