Simplification of the calculation scheme for determining the stress state of non-thin cylindrical shells with a complex cross-sectional shape ellipticity

An alternative to full-scale experiments is computer simulation, which allows studying a variety of states, phenomena, processes, etc. occurring in the environment.
 Conducting computational experiment an integral part design phase new structures and their elements. One important issues choice research model, feasible calculation scheme possibility its simplification.
 This investigates orthotropic non-thin cylindrical shells with corrugated ellipses as cross sections, has two-parameter deviation cross-section shape from circular one. Considered are shells, for curvature radius reference surface positive sign. The subjected internal pressure under conditions simple support on ends.The subject study stress state and, consequence, establishment relationship between geometric parameters sections simplifying (excluding consideration parameter characterizing ellipticity).The problem solved using spatial model linear elasticity theory based method approximation functions by discrete Fourier series.For class considered we find limits possible simplification during calculations durability use fourth (the greatest specific potential energy), due exclusion parameter, characterizes ellipticity shells.The cross-sectional zone rigidity was chosen criterion simplified scheme. It found that can be used when elliptical this section differs no more than 17%.