Diagnostics of thin-walled structures of complex geometry and structure

The main stages of the birth thin-walled structures, changes in their relative thickness and mass a unit area are given; ways creating perfect structures indicated. problems arising during operation complex geometry, as well approaches methods calculation noted. To ensure trouble-free structure with thin-layer coating, under load exposed to physical fields environments, it is necessary correctly diagnose condition structural elements. spline variant finite element method two-dimensional (SV FEM-2) three-dimensional FEM-3) productions noted, synthesis these variants - SV FEM-2 + FEM-3. combination idea parametrization entire domain approximation desired variables within by Hermitian cubic splines makes possible obtain high-precision consistent developed make evaluate stress-strain state including multilayer, coating local defects, take into account specific surface properties other than those array. Studies stress concentration near depressions considered. Two-dimensional experimental theoretical noted for evaluating stiffness adhesion thin-walled, composite elements structure, which, along distributed may have defects. developments were used solving tasks number enterprises.