Geometric Nonlinear Orthotropic Shallow Shells Investigation

Abstract

Orthotropic shallow shells based on rectangular plan variation form are considered. Middle surface of shells depends on the high of supporting arches, the boundary conditions, and the thickness. Form of shall variation on the critical force coefficient and stress of shell are investigate with the help of Bubnov-Galerkin method. The calculation method has done in the Maple program complex.

Mixed finite element for the dynamic analysis of orthotropic flexible shallow shells

“…This makes it possible to use this fi nite element to calculate ribbed, multilayer and reinforced concrete shells after calculating their reduced characteristics. The derivation of fi nite-element equations in mixed formulation is carried out using by the Galerkin method in the weak form [1][2][3][4]. This method allows to do without the construction procedure of the functional of problem and to solve equations of problem in the form in which they are written.…”

Remote surveillance of shell structure load-bearing capacity

“…Petersburg (2010) show the lack of the proper monitoring of structural condition causes not only huge material losses but also losses of human lives. In the Russian Federation, there are regulations, which define the time of regular buildings and structures inspections [1][2][3][4][5][6]. The experts of the enterprises managing these buildings and structures carry out their own monitoring of structure conditions.…”