Xem 1-20 trên 395 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.

    pdf290p greengrass304 15-09-2012 34 15   Download

  • 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.

    pdf0p thix1minh 16-10-2012 40 6   Download

  • 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.

    pdf815p camchuong_1 04-12-2012 26 5   Download

  • 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.

    pdf388p hotmoingay 03-01-2013 18 4   Download

  • 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.

     

     

    pdf36p vanquanpl 18-05-2015 13 4   Download

  • 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. ...

    pdf8p tuanlocmuido 19-12-2012 18 1   Download

  • The modelling of mechanical systems provides engineers and students with the methods to model and understand mechanical systems by using both mathematical and computer-based tools. Written by an eminent authority in the field, this is the second of four volumes which provide engineers with a comprehensive resource on this cornerstone mechanical engineering subject. Dealing with continuous systems, this book covers solid mechanics, beams, plates and shells.

    pdf521p kennybibo 14-07-2012 61 28   Download

  • The HVAC designer cannot neglect consideration of the sound and vibration generated by HVAC equipment. This chapter briefly discusses the fundamentals of sound and vibration control. References for further study are cited at the end of the chapter.

    pdf16p babyuni 16-08-2010 77 25   Download

  • Biên Dạng Phổ Tần Số-Gear Analysis Formulas For Vibration Analysis Diagnostics

    doc14p phanthetien 18-09-2010 68 18   Download

  • The infrared and Raman spectroscopy have applications in numerous fields, namely chemistry, physics, astronomy, biology, medicine, geology, mineralogy etc. This book provides some examples of the use of vibrational spectroscopy in supramolecular chemistry, inorganic chemistry, solid state physics, but also in the fields of molecule-based materials or organic-inorganic interfaces.

    pdf178p cucdai_1 16-10-2012 45 17   Download

  • Vibrations are a part of our environment and daily life. Many of them are useful and are needed for many purposes, one of the best example being the hearing system. Nevertheless, vibrations are often undesirable and have to be suppressed or reduced, as they may be harmful to structures by generating damages (possibly leading to dramatic and spectacular accidents such as the case of the Aloha 243 fl ight or the bridge of Tacoma Narrows) or compromise the comfort of users through noise generation of mechanical wave transmission to the body....

    pdf0p 123859674 04-07-2012 65 16   Download

  • This book focuses on the very important and diverse field of vibration analysis and control.

    pdf0p ktcn_1 10-07-2012 51 16   Download

  • To generate noise from gears the primary cause must be a force variation which generates a vibration (in the components), which is then transmitted to the surrounding structure. It is only when the vibration excites external panels that airborne noise is produced. Inside a normal sealed gearbox there are high noise levels but this does not usually matter since the air pressure fluctuations are not powerful enough to excite the gearcase significantly.

    pdf40p lyacau 30-12-2009 81 14   Download

  • Vibrations are extremely important in all areas of human activities, for all sciences, technologies and industrial applications. Sometimes these vibrations are harmless, often they can be noticed as noise or cause wear. Vibrations, if they are not desired, can be dangerous. But sensibly organized and controlled vibrations may be pleasant (think of all kinds of music) or vitally imp

    pdf0p ktcn_1 10-07-2012 34 13   Download

  •  Infrared (IR) Spectroscopy: – First real IR spectra measured by Abney and Festing in 1880’s – Technique made into a routine analytical method between 1903- 1940 (especially by Coblentz at the US NBS) – IR spectroscopy through most of the 20th century is done with dispersive (grating) instruments, i.e. monochromators – Fourier Transform (FT) IR instruments become common in the 1980’s, led to a great increase in sensitivity and resolution  Raman Spectroscopy: – In 1928, C. V.

    pdf31p qdung92ct 03-07-2012 50 9   Download

  • Tham khảo tài liệu 'vibration fundamentals episode 1', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf24p b2d181010 28-10-2011 28 8   Download

  • Tham khảo sách 'root cause failure analysis plant engineering maintenance series vibration fundamentals r. keith', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf302p ngoctu2396 28-11-2012 29 8   Download

  • In any structure or assembly, certain whole-body motions and certain deformations are more common than others; the most likely (easiest to excite) motions will occur at certain natural frequencies. Certain exciting or forcing frequencies may coincide with the natural frequencies (resonance) and give relatively severe vibration responses. We will now discuss the much-simplified system shown in Fig.

    pdf21p liemthanh 16-12-2009 43 6   Download

  • Tham khảo tài liệu 'vibration fundamentals episode 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf30p b2d181010 28-10-2011 32 6   Download

  • Tham khảo tài liệu 'vibration fundamentals episode 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf30p b2d181010 28-10-2011 27 5   Download

Đồng bộ tài khoản