Software complex calculations

Multi-purpose software package "Stadio" provides a numerical solution ofsteady and unsteady problems of field theory, the calculations of thestatic, thermal and dynamic stress-strain state (VAT), the stabilityand strength of the arbitrary combination of mechanical systems(massive shell-lamellar-membrane-rod with a "hard" bodies, fluid-filledcavities and internal connections, c iso-and ortho-anisotropicmaterials) in the plane, axisymmetric and three-dimensional linear andnonlinear formulations. Realized representative library straight andcurved rod, bending-membrane, the curved super-and isoparametricalfinite element (more than 120 types), elements with a given stiffnessmatrix, inertia and damping, modern optimized numerical algorithms(methods of Cholesky and preconditioned conjugate gradient, PCG; BlockLanczos and subspace iteration explicit and implicit difference schemesof integration: central difference, Newmark, Wilson and theCrank-Nicolson, finite element and superelementnye schemes, etc.) anddevelopment of service provision. The fundamental step was taken inproximate the dynamic characteristics of complex subsystems within thegeneral model - the formation and use of so-called reduced matrixeffects Craig-Bemptona.

Numerical solution of linear and nonlinear problems
field theory, statics, stability and dynamics of spatial systems combined.