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Information × Registration Number 0219U003542, 0115U000022 , R & D reports Title The study wave propagation and evaluation of sustainability layered homogeneous and heterogeneous naturel systems and engineering structures. popup.stage_title Head Gorodetskaya Natalya Sergeevna, Registration Date 18-01-2019 Organization The Institute of Hydromechanics of the National Academy of Sciences of Ukraine popup.description2 The purpose of the work is the analysis of wave processes in the elastic half-layer, the study of mechanical properties of water-saturated soils, the conduct of experimental and theoretical analysis of the stress-strain state, numerical simulation of the dynamic interaction of foundations with a water-saturated soil base. - the analysis of the nature of the motion in the hemisphere ends and the data on the peculiarities of the energy exchange between the longitudinal and shear waves when they are reflected from the boundary and the influence of nonuniform waves for two typical cases of excitation of the coils - the incident from the infinity of the normal wave and the external harmonic load on the end. The general focus is on the analysis of energy distribution, which is introduced into the semi-layered mode of distribution. For numerical analysis, the methods of collocation and least squares are used. - A detailed development of new differential equations and formulas for determining the elastic state and the motion of elastic and viscous compressed media has been systematically presented, and an analogy (response) has been demonstrated, which made it possible to form the equation of a viscous body motion in an analogue to the theory of elasticity form. A numerical method based on OpenFoam CFD open source computing systems is developed. - problems of the vertical fluctuation of the rigid strip and the rectangular stamp with the impervious to the porous liquid with the sole of the porous-saturated fluid (according to the Bio model) layer are considered. By means of symbolic tran-formations, analytical expressions for displacements of the solid and liquid phases of the surface of the layer with a clamped lower face are obtained by the action of distributed harmonic loading on the free surface of the layer on the porous solid and liquid phases. The method of solving dynamic contact problems using orthogonal polynomials is given. The numerical results of frequency dependence of band impedances on geometrical sizes and physical-mechanical parameters of a porous-fluid saturated liquid medium are analyzed. Product Description popup.authors Городецька Наталія Сергіївна Литвиненко О.Р. Островерх Б.М. Потапенко Л.С. Рева Т.Л. Савицький О.А. popup.nrat_date 2020-04-02 Close