The Calculation of the Stress-Strain State of Composite Shell Structures for Spatial Design Schemes

The article deals with the elasto-plastic stress-strain state of the composite structure under the action of internal pressure. The spatial problem is solved in the axisymmetric formulation for static and dynamic load cases. A variation-difference method and the Wilkins finite-difference method are used for the problem solution which allow to obtain the values of local characteristics of the stress-strain state (displacements, deformations, stresses) of structures as well as elastic-plastic deformation thickness. In terms of the spatial positions of the theory of elasticity and plasticity, the proposed approach allows investigating the static and dynamic behavior of shell structures composed of various elements, including non-canonical.

теория упругости и пластичности, составные осесимметричные пространственные конструкции, статическая и динамическая задача, перемещения, деформации, напряжения, вариационно-разностный метод, метод конечных разностей Уилкинса, theory of elasticity and plasticity, composite axisymmetric spatial structures, static and dynamic loads, deformation, stress, variation-difference method, Wilkins finite-difference method, displacement

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