No 4 (2009)

To definition of the module of elasticity of spherical SHELLS N.K. Galimov, S.N. Yakupov Concrete settlement formulas for the spherical covers jammed on a contour which are under uniform pressure are received. Numerical examples are presented.

BIFURCATIONAL STABILITY OF THE STRUCTURE AND FOUNDATIONSYSTEM ON THE BASIS OF V.Z. VLASOV'S MODEL OF VARIATIONAL METHOD Inozemtzev V.K., Inozemtzeva O.V., Strelnikova K.A. A model joining the equations for a layer of the ground on the basis of Vlasov's variational method and the equations of bending of beam strip used for a plane problem in displacements is presented.

The difficulties bound to the transport of the granular materials in the industry brought numerous authors to propose some models in order to control the out-flow of these materials. The works of POLDERMAN permit to determine the field of velocity of the out-flow in mass of the unalterable granular materials from a mathematical model based on hypothesis according to which the angle ψ between the major main axis of the constraint and the half angle θ at the summit of a conical hopper is a linear function of θ with the following form: ψ = C1θ . For a given value of the ray r, he determines the out-flow velocity of the continuity equation by means of the unknown velocity for ψ = 0. Using the approached solution of the continuity equation calculated by the GALERKINE method, we determine the absolute error depending of the unknown velocity. With the given approximation precision the constraint on the unknown velocity is calculated.

THE ALGORITHM OF THE ACCOUNT OF DISPLACEMENT AS A RIGID WHOLE TRIANGULAR SHELL ELEMENT WITH THE HELP OF LAGRANGE MULTIPLIERS Y.V. Klochkov, A.P. Nikolaev, O.V. Vakhnina A question of application of a vector way of approximation of movings in the algorithms of calculation of environments of rotation developed on the basis of triangular elements of digitization which matrixes of rigidity were formed with use of the correcting multipliers of Lagrange essentially raising accuracy of certainly-element decisions of environments

Исследуются дифференциальные уравнения пространственного движения вязко нелинейно-упругой гибкой связи и свойства волн, возникающих при динамическом воздействии в вязко нелинейно-упругой гибкой связи (ВГС). Доказано, что в вязкой ГС при динамическом воздействия возникают одна продольная волна и две поперечной волны. Основное внимание уделяется исследованию свойств возникающих волн. Определены скорости распространения этих волн.

THE CONCRETE-FILLED STEEL TUBE COLUMNS FOR HIGH-RISE BUILDINGS A.L. Krishan The concrete-filled steel tube columns should be used in the structures of hiqh-rise buildings. The experimental and theoretical researches of new structures of concrete-filled steel tube columns with pressed structure of concrete are executed. The results of experiences testify to its high bearing capacity.