Xem 1-20 trên 435 kết quả Vibration
  • This book is a compilation of some selected articles devoted to the analysis and control of vibrations. Vibrations are a phenomenon found in many engineering systems; their harmful effects are translated into low performance, noise, energy misspend, discomfort and system breakdown, among others. These are the reasons why, in the last years, researchers have made great efforts in seeking ways to eliminate them totally or partially.

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  • The first edition of the Shock and Vibration Handbook in 1961 brought together for the first time a comprehensive survey of classical shock and vibration theory and current applications of that theory to contemporary engineering practice. Edited by Cyril M. Harris and the late Charles E. Crede, the book was translated into several languages and became the standard reference work throughout the world.The Second Edition appeared in 1976, the Third Edition in 1988, and the Fourth Edition in 1996.

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  • (BQ) Part 1 book "Vibrations" has contents: Single-degree-of-freedom systems - subjected to transient excitations, multiple degree-of-freedom systems - governing equations, natural frequencies, and mode shapes, multiple degree of freedom systems - general solution for response and forced oscillations, vibrations of beams.

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  • Introduction to shock & vibration gives an introduction to vibration through a description of the most common mechanical parameters leading to the behaviour of simple mass spring systems. Furthermore the different types of signals and their description is treated and the conversion between the different parameters is described mathematically and graphically. Finally the measurement units are defined.



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  • This book serves as an introduction to the subject of vibration engineering at the undergraduate level. Favorable reactions by professors and students to the fourth edition have encouraged me to prepare this fifth edition of the book

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  • The fundamental concepts, ideas and methods underlying all vibration phenomena are explained and illustrated in this book. The principles of classical linear vibration theory are brought together with vibration measurement, signal processing and random vibration for application to vibration problems in all areas of engineering. The book pays particular attention to the dynamics of structures, but the methods of analysis presented here apply readily to many other fields.

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  • During the years surrounding the new millennium, the field of vibrational optical activity (VOA), comprised principally of vibrational circular dichroism (VCD) and vibrational Raman optical activity (ROA), underwent a transition from a specialized area of research that had been practiced by a handful of pioneers into an important newfield of spectroscopy practiced by an increasing number of scientists worldwide. This transition was made possible by the development of commercial instrumentation and software for the routine measurement and quantum chemical calculation ofVOA.

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  • (BQ) Part 1 book "The vibration analysis handbook" has contents: Introduction to machinery vibration, time and frequency analysis techniques, accurate evaluation of machinery condition, hardware and software required for accurate diagnostic.

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  • (BQ) Part 2 book "The vibration analysis handbook" has contents: Accurate diagnosis of antifriction bearings, accurate evaluation of gears, analyzing and solving press roll and nip problems.

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  • (BQ) Part 1 book "Fundementals of mechanical vibration" has contents: Introduction, free vibrations of one-degree-of-freedom- systems, harmonic excitation of one degree-of-freedom systems, vibrations of one-of-freedom systems, degree-of-freedoms - derivation equations, rations of Multi-of-freedom systems.

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  • (BQ) Part 2 book "Fundementals of mechanical vibration" has contents: Forced vibrations of Multi-Degree-of-freedom systems, vibration control, vibrations of continuous systems, finite-element method, nonlinear vibrations.

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  • (BQ) Part 1 book "The physics of vibrations and waves" has contents: Simple harmonic motion, damped simple harmonic motion, the forced oscillator, transverse wave motion, coupled oscillations, longitudinal waves, waves on transmission lines,...and other contents.

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  • (BQ) Part 2 book "The physics of vibrations and waves" has contents: Waves in more than one dimension, fourier methods, waves in optical systems, interference and diffraction, wave mechanics, non linear oscillations and chaos, non linear waves, shocks and solitons.

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  • (BQ) Part 1 book "Engineering vibrations" has contents: Preliminaries, free vibration of single degree of freedom systems, forced vibration of single degree of freedom systems – 1-Periodic excitation; forced vibration of single degree of freedom systems – 2-Nonperiodic excitation; operational methods, dynamics of multi degree of freedom systems.

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  • (BQ) Part 2 book "Engineering vibrations" has contents: Free Vibration of multi degree of freedom systems, forced vibration of multi degree of freedom systems, dynamics of one-dimensional continua, free vibration of one-dimensional continua, forced vibration of one-dimensional continua.

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  • In the present paper the governing equations for dynamical analysis of corrugated cross-ply laminated composite plates in the form of a sin wave are developed based on the Kirchoff-Love’s theory and the extension of Seydel’s technique. The problems of natural vibration and forced vibration of a plate with various boundary conditions are studied. Effects of factors as geometry dimensions, order of laminate as well as waved-amplitude on frequency of natural vibration, amplitude of forced vibration of the corrugated cross-ply laminated composite plates are also analysed. ...

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  • This paper presents the application of the Collective Model to determine some vibrational bands of 140La nucleus. This experiment is performed at channel No.2 of Dalat Research Reactor (DRR), Prompt gamma neutron activation analysis method (PGNAA) is used. The result has found 8 vibrational bands of 140La nucleus. It’s quite relevant to the theoretical calculation. The deviations are less than 1.6 %.

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  • In this report, we use a sum-frequency generation vibrational spectroscopy to measure SFG spectra from 1-Butanol monolayers on pure water and halide saline solution interfaces. These spectra indicate that halide anions have different effects on the structure of 1-Butanol monolayer/water interfaces. The obtained SFG spectra suggest that the I¯ anions mostly disturb the interfacial structure due to their largest surface propensity among those investigated.

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  • In this report, we studied the effect of halide salt concentration on Arachidic Acid (AA) Langmuir monolayers formed on salt solutions, such as NaCl, NaI, NaF by using a SumFrequency Generation Vibrational Spectroscopy. In the SFG spectra, we observed the peak intensities of CH3FR and CH3SS vibrational modes decreased when increasing the salt concentration. This observation indicates that the structure of the AA monolayer was disordered by the interaction of the dissolved ions with the carboxyl head groups of the monolayer.

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  • This paper introduces a method using an accelerometer and Fast Fourier Transform (FFT) to recognize vibration spectrum. This spectrum will be compared with standard one built by the manufacturer. In this paper, the standard spectrum of well-known elevator manufacturers such as Otis, Schindler etc. will be introduce (introduced?) for reference of Vietnamese elevator manufacturer.

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