About Verification of Discrete-continual Finite Element Method of Structural Analysis. Part 2: Three-dimensional Problems

This paper is devoted to verification of so-called discrete-continual finite element method (DCFEM) of structural analysis. Three-dimensional problems of structural analysis are under consideration. Formulation of the problem of three-dimensional theory of elasticity for structure with piecewise constant physical and geometrical parameters along so-called its basic direction, solutions obtained by DCFEM and finite element method (FEM), their comparison are presented. DCFEM is more effective in the most critical, vital, potentially dangerous areas of structure in terms of fracture (areas of edge effects), where some components of solution are rapidly changing functions and their rate of change in many cases can’t be adequately taken into account by the standard FEM.