The article is devoted to memory of outstanding scientist in the field of mathematics, mechanics, and cybernetics, Honored Scientist of Ukraine, laureate of State Prize of Ukraine in science and technology, the holder of the Order of Yaroslav Mudrey, the Labor Red Banner, Friendship of Nations, Professor, Doctor of Physic-Mathematical Sciences, honorary Doctor of NTU “KрPI”, VLADIMIR LOGVINOVICH RVACHEV.

Keywords:
Mathematics, mechanics, cybernetics

Kurpa L.V. Vladimir logvinovich Rvachev – known Ukrainian scientist – mathematician-engineer (to the 85th anniversary of birthday). NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 3-8.

Problems and FEM modeling methodology specific for viscous fluid flow are presented in the paper. The general model equations of fluid flow within turbine runner blades lead to step-by-step calculation procedure using FEM. The given problem terms are illustrated with stationary model calculations for blades mechanical stresses.

Keywords:
FEM modeling, turbine blades

Avtonomova L.V., Bondar S.V., Kirkach B.N., Konohov V.I., Stepuk A.V., Simulation of unsteady flow around a rigid body in a viscous fluid. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 9-12.

The analysis of the impact of adjustment Kalman filter for the effectiveness of estimating instrumental errors of the inertial unit in the integrated navigation system was made. The recommendations for setting up the filter, based on the results of this analysis, improving the accuracy and adequacy of the estimation of instrument errors, compared with a theoretical setting were formulated. The simulation results showing the high efficiency of the recommended settings were presented.

Keywords:
Kalman filter, inertial unit, simulation results

Bagmut I.A. Tuning of the Kalman filter in correction of inertial measurements in integrated navigation system. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 13-21.

In the given work the object of research is a comparative analysis of various variants of implementation pressure coupling which are under the influence of centrifugal forces during rotation. The work purpose is revealing of breakdown rotational velocity of the details connected among themselves and, on the basis of these data, determination of optimal variant of connection.

Keywords:
Pressure coupling, profiled joints

Danilov D.V., Andreev A.G. Comparative analysis of the profile of the coupling under the action of centrifugal loads during rotation. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 22-35.

The approach of the construction element’s reliability prediction, based on the use of kinetic equations for description of the measure of damage and the mathematical tool for Markoff’s process theory is proposed. As the result, the most informative reliability characteristics, such as no-failure operation probability and probability density of failures, are determined.

Keywords:
Prediction, Markoff’s process theory, failure

Zhovdak V.A., Tarasova L.F. Prediction of residual life of structural elements using two-dimensional Markov processes. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 36-45.

Present paper gives an insight into the problematic of strength analysis of mechanically fastened joints in modern structural materials – FRP laminates. A review of published work is carried out to outline the experimentally-observed effects and main factors influencing the complex strength behaviour of such joints which are an important subject for theoretical investigation. Special terminology established in this field is introduced in the context of discussion.

Keywords:
FRP laminates, constructional material, bolting

Kirkach A.B. The problem of the strength of bolted connections on the basis of the layered composite plastics. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 45-54.

The description of research of the is intense-deformed condition of the base of a turbine unit of average capacity is resulted. The conclusion concerning possibility of the further operation of the base is drawn. It is defined and resulted the most intense places of the base which require the detailed review at stations.

Keywords:
Modelling, turbine, own vibrations

Krasnikov S.V. Modeling naprozen-deformating become the Foundation of the 200 MW turbine. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 54-58.

Mathematical problem statement of system elastic-plastic deformation of interacting solids involving pulse-magnetic loading has proposed in this article. State equations accepted correspondingly plastic yielding theory. The problem of elastic-plastic deformation of corner preform by plane force system of pulse magnetic field has solved. The technological operations for curve correction were investigated. The general recommendations for carrying out of similar technological operations have made and data of external pressure by which conditions of the technological operation achieved have obtained.

Keywords:
Elastic-plastic deformation, pulse-magnetic loading, corner

Lavinskiy D.V. Analysis of elastic-plastic deformation in the simulation of the operation of filling in the corners”. Part 2. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 59-63.

The paper deals with the development of an algorithm of the determination of the process of thermal state stabilization in the pneumatic tires. The algorithm is a computationally-experimental. It is realized on the base of numerical solution of transient thermal analysis within the finite element method and uses an experimental data about the time and magnitude of inside the tire air heating for the determination of the rate of heat generation over one cycle of wheel rotation. The results of numerical and experimental investigations has been carried out about the formation of the thermal state of the pneumatic tire model 175/70R13 for passenger car.

Keywords:
Pneumatic tires, thermal state, finite element method

Larin A.A., Barannik I.M. Study of the formation of a thermal condition of a pneumatic tire of a stationary process rolling. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 64-78.

The expander-compressor aggregate rotor is considered. It is the part of the full-size test bench for natural gas liquefaction. Results of computational studies of optimal parameters determining for radial magnetic bearings with permanent ring magnets are presented.

Keywords:
Rotor, test bench, magnetic bearings

Martynenko G.Yu. Optimal design of passive radial magnetic bearings for rotor expander-compressor unit. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 79-100.

Using the VBK method an approximate solution of the boundary of hydrodynamics describing the motion on the inclined plane vibrosieve inhomogeneous grain mixture with an exponential change in the vibratory viscosity of the layer was constructed. The calculations, analyze results and numerical error of the approximate solutions were carried out.

Keywords:
VBK method, approximate solution, vibrosieve, viscosity

Olshanskiy V.P., Olshanskiy S.V. Approximate calculation of oscillations of an inhomogeneous layer of grain on the flat vibropresata. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 101-106.

The article describes the process of formation of circular dent under the influence of the indentor. The calculations are based on the finite element method taking into account the geometrical and physical nonlinearities. Analysis of forms are obtained dent under the influence of different forms of stamps.

Keywords:
Circular dent, indentor, finite element method

Onackiy R.L. Education round dents on a cylindrical shell by means of indentation of a stamp. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 106-113.

There has been developed the structural parameter model of LPC for the superelement modeling. It is presented in the form of the UML class diagram. The variable characteristics of the structural elements have been marked out in the model. The dynamic characteristic for one of the LPC class is calculated.

Keywords:
Parametric model, low pressure cylinder, natural frequencies

Stepchenko A.S., Dudkina E.N., Sobol V.A. Simulation of the model number of hull structures of cylinder low pressure turbines: Part 2. The construction of the parametric FE model to study the dynamic characteristics. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 113-122.

A parametric model of two-stage ultra-long blade, which allows to vary the location of the snubber had been developed. Stress-strain state has been calculated taking into account the contact bandage links on the series of finite-element models of the cycle symmetric blades system. The obtained results allowed to determine the optimal location of the snubber.

Keywords:
Parametric model, low pressure cylinder, natural frequencies.

Stepchenko A.S., Larin A.A., Artemov S.L. Study of the influence of the position of an intermediate connection on the strength characteristics of the blades are introduced into the length of the bunk brace. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 122-131.

The problem of geometrically nonlinear free vibrations of multilayer composite plates of complex shape at different ways of fixing is considered. Mathematical statement made in the refined theory of Timoshenko-type model. Numerical results for multilayer plates of complex geometry and different types of boundary conditions are presented. A comparison with known results was made and their good agreement was ascertained, indicating the probability of the proposed method.

Keywords:
Composite plates, Timoshenko-type model, nonlinear free vibrations

Timchenko G.N., Morachkovskaya I.O., Budnikov N.A. The study of geometrically nonlinear free vibrations of composite laminated plates. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 132-138.

The method and algorithms for determining angular velocity vector and acceleration of center of mass of a moving object, based on using only acceleration sensors located at specified points of a moving object without the use of gyroscopes is proposed. It is sufficient to use nine accelerometers oriented in some way in selected locations.

Keywords:
Acceleration sensors, gyroscope, angular velocity vector

Uspenskiy V.B., Nekrasova M.V. The measurement of acceleration and angular velocity of a rigid body using redundant systems accelerometers. NTU «KhPI» Bulletin: Series «Dynamics and Strength of Machines». 2011. No. 63. Pp. 138-145.