Mechanics

Impact System Motion Modes Simulationat Periodic Force Effect

Authors: Manzhosov V. K., Novikov D. А.

A model of impact system motion at periodic force effect taking into account possible multiple impacts during the period of the force effect has been developed. Simulation of impact system motion modes has been carried out. Choice of system parameters realizing the required motion characteristics has been made.

 

Tricomi Problem for Differential-Difference Equations of Mixed

Authors: Lashtabega О. V., Zarubin А. N.

The paper examines the boundary value problem for mixed type equations with two perpendicular lines of degeneracy and the delay in the derivative.

The Global Solvability of the Problem of Nonlinear Diffusion and Slow Convection in Slightly Compressible Viscous Fluid

Authors: Gritsenko S. A.

The paper deals with Stokes system, corresponding to the motion of slightly compressible viscous fluid where kinematic viscous depends on the admixture concentration. The system also contains the convective diffusion equation. The article proves the existence of generalized solution of the initial-boundary problem for this system in the limited domain with the homogeneous Dirichlet condition for the fluid velocity and the homogeneous Neumann condition for the concentration of admixture on the boundary of domain.

Propagation of Pressure Waves in Finite-Size Bubbles Zones

Authors: Galimzyanov M. N.

Peculiarities of pressure waves propagation in liquids with bubbly zones have been studied. The problem is studied taking into account two-dimensional effects. Results of the research of a wave impulse influence on the firm wall partially covered with a bubble screen are presented.

The Comparative Analysis of Calculation of Durability and Stability of the Supported Shells on the Basis of the PC OBOLOCHKA and PC ANSYS

Authors: Baranova D. А., Volynin А. L., Karpov V. V.

To substantiate the efficiency of the PC OBOLOCHKA use for research of durability and stability of the supported shells the article compares the received results of calculation with the results found through PC ANSYS use.