This book presents in detail an alternative approach to solving problems involving both linear and nonlinear oscillations of elastic distributed parameter systems. It includes the so-called variational, projection and iterative gradient methods, which, when applied to nonlinear problems, use the procedure of linearization of the original non-linear equations.
These methods are not universal and require a different solution for each problem or class of problems.However, in many cases the combination of the methods shown in this book leads to more efficient algorithms for solving important applied problems.To record these algorithms in a unified form, the first part of the book and its appendix devote considerable attention to compiling the general operator equations, which include (as particular cases) equations for vibrations in rods, plates, shells and three-dimensional bodies. They are mainly considered to be periodic or nearly periodic oscillations, which correspond to stat
ionary or nearly stationary regimes of machinery operation. In turn, the second part of the book presents a number of solutions for selected applications.
Spis treści
Part 1. Equations and Methods: Oscillation Equations of a Rod with Rectilinear Axis.- Vibrations of Three-Dimensional Body, Plate and Ring.- Spectral Theory.- Variational and Projection Methods for Solving the Vibration Theory Equations.- Harmonic Analysis.- Discontinuous Functions. Complicated Boundary Conditions.- Exact Solutions of Equations of Oscillation Theory.- Nonlinear Periodic Oscillations.- Part 2. Some Applied Problems: Determination of Elastic-Damping Characteristics of Slide Bearings.- Vibrations of Shafts, Blades and Disks.- Stability of The Equilibrium Position of Rotating Shaft Axis.- Vibrations of Internal Combustion Engine.
O autorze
Fridman Vladimir Markovich was born on September 30, 1928 in Leningrad (St.Petersburg), USSR. In 1951 he graduated from the Physics and Mechanics Department of the Leningrad Polytechnic Institute (LPI). In 1964 he received a Ph D degree in physics and mathematics, and in 1970 – Doctor of Sciences in Engineering. Since 1961 to 1993 – Research Fellow, Professor of LPI. At the same time, in parallel, from 1986 through 1996 – head of the laboratory at the Institute for Problems in Mechanical Engineering of the Academy of Sciences of the USSR and Russia. From 1951 to 1993 – head of the laboratory in the Electrical Machine Building company 'Electrosila’ (“Electric power”). In 1993 he immigrated to the USA. Since 1996 – Vice-President of the company 'Technical Mechanics and Electronics’. Area of scientific interests: variational methods in the theory of elastic vibrations, calculation methods for dynamics of power machines. In total he has published more than 150 articles and has got more than30 patents for inventions. Vladimir Fridman in 2014 published this monograph
Theory of Elastic Oscillations in Russian language (
Теория упругих колебаний).
Sviyazheninov Eugene Dmitrievich was born on April 8, 1957 in Leningrad (St.Petersburg), USSR. In 1979 he graduated from the Physics and Mechanics Department of the Leningrad Polytechnic Institute (LPI). In 1985 he received a Ph D degree in Engineering, and in 1970 – Doctor of Sciences in Engineering. Since 1979 to 1986 – Research Fellow of LPI. From 1986 through the present time – Leading Scientist at the Institute for Problems in Mechanical Engineering of the Academy of Sciences of the USSR and Russia. In 2001 he worked as a visiting Scientist at Ford Motor Company, Scientific Research Laboratory, Dearborn, USA. Area of scientific interests: research, development and inventory activities in mechanics, machinery, dynamics, vibration, noise, shock, impact, vibroisolation systems, constructi
ons, automotive, electricity, electrodynamics, microwave electronics, acoustics, mechatronics. In total he has published more than 90 articles and has got more than 20 patents for inventions.
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