Download or read book A Comparison of Sinusoidal and Random Vibration Effects on Human Performance written by Donald L. Parks and published by . This book was released on 1961 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Vibration and Shock Analysis Random Vibration written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Vibration and Shock Analysis, Second Edition Volume 3: Random Vibration The vast majority of vibrations encountered in a real-world environment are random in nature. Such vibrations are intrinsically complicated, but this volume describes a process enabling the simplification of the analysis required, and the analysis of the signal in the frequency domain. Power spectrum density is also defined, with the requisite precautions to be taken in its calculation described together with the processes (windowing, overlapping) necessary for improved results. A further complementary method, the analysis of statistical properties of the time signal, is described. This enables the distribution law of the maxima of a random Gaussian signal to be determined and simplifies calculation of fatigue damage to be made by the avoidance of the direct counting of peaks. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.
Download or read book Miles Equation in Random Vibrations written by Jaap Wijker and published by Springer. This book was released on 2018-01-25 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the theory, applicability and numerous examples of Miles’ equation in detail. Random vibration is one of the main design drivers in the context of the design, development and verification of spacecraft structures, instruments, equipment, etc, and Miles’ equation provides a valuable tool for solving random vibration problems. It allows mechanical engineers to make rapid preliminary random response predictions when the (complex) structure is exposed to mechanical and acoustical loads. The book includes appendices to support the theory and applications in the main chapters.
Download or read book Mechanical Vibration and Shock Analysis Specification Development written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Vibration and Shock Analysis, Second Edition Volume 5: Specification Development This volume focuses on specification development in accordance with the principle of tailoring. Extreme response and the fatigue damage spectra are defined for each type of stress (sinusoidal vibration, swept sine, shock, random vibration, etc.). The process for establishing a specification from the life cycle profile of the equipment which will be subject to these types of stresses is then detailed. The analysis takes account of the uncertainty factor, designed to cover uncertainties related to the real-world environment and mechanical strength, and the test factor, which takes account of the number of tests performed to demonstrate the resistance of the equipment. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.
Download or read book Random Vibration written by Christi Lalanne and published by CRC Press. This book was released on 2002-03-29 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: About the Series: This important new series of five volumes has been written with both the professional engineers and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and crucially important areas of mechanical engineering, from both the theoretical and practical standpoints. As all products need to be designed to withstand the environmental conditions to which they are likely to be subjected, prototypes must be verified by calculation and laboratory tests, the latter according to specifications from national or international standards. The concept of tailoring the product to its environment has gradually developed whereby, from the very start of a design project, through the to the standards specifications and testing procedures on the prototype, the real environment in which the product being tested will be functioning is taken into account. The five volumes of Mechanical Shock and Vibration cover all the issues that need to be addressed in this area of mechanical engineering. The theoretical analyses are placed in the context of the real world and of laboratory tests - essential for the development of specifications. Volume III: Random Vibration The vast majority of vibrations encountered in the real environment are random in nature. Such vibrations are intrinistically complicated, and this volume describes the enabling process for simplification of the analysis required, and the analysis of the signal in the frequency domain. Power spectrum density is also defined, with the requisite precautions to be taken in its calculation described togther with the processes (windowing, overlapping) necessary for improved results. A further complementary method, the analysis of statistical properties of the time signal is described. This enables the distribution law of the maxima of a random Gaussian signal to be determined and simplifies calculation of fatigue damage to be made by the avoidance of the direct counting of peaks.
Download or read book Sinusoidal and Random Vibration written by J. M. Tessarzik and published by . This book was released on 1973 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Performance Under Random and Sinusoidal Vibration written by Alexander Z. Weisz and published by . This book was released on 1965 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two experiments tested human subjects under whole-body vertical vibration to (1) compare effects on performance of 5 cps sinusoidal, 5 cps random amplitude, and 4-12 cps random vibration equated on the basis of power, and (2) determine acceleration levels at which significant performance decrements are found for each type of vibration. The complex experimental task required two-dimensional compensatory tracking, visual monitoring, and auditory monitoring during 20-minute vibration exposures at levels equated to 5, 15, 25, and 30 percent of the 1-minute human tolerance values for 5 cps sinusoidal vibration. Performance decrements under vibration were restricted to tracking, the most demanding component of the task complex. Tracking performance deteriorated with increasing acceleration levels of each type of vibration. Overall performance differences associated with the different types of vibration equated on the basis of power were not significant. A number of task and procedural variables, including task difficulty, work-rest cycle, and prior experience appear to be important determinants of performance capabilities and fatigue effects found in vibration studies, indicating a need for further investigation of these variables. (Author).
Download or read book Analysis of Sinusoidal and Random Vibration Energies written by J. N. Tait and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of analysis of the total available kinetic energy of sinusoidal and random vibration programs has been developed, using the common basis of unit mass. Fifteen energy expressions are presented for the sinusoidal domain, including log and liner sweep, and fixed frequency dwell. Twenty-eight energy expressions are presented for the random domain, including broadband, swept narrowband, and harmonic spike series. Two examples are presented, showing application to MIL-STD-810B. Calculated energies for eighteen curves of this standard are tabulated. In order to facilitate energy comparisons, and as a guide to program synthesis, eighty-five energy ratio expressions are presented. (Author).
Download or read book Fatigue Damage written by Christi Lalanne and published by CRC Press. This book was released on 2002-03-29 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: About the Series: This important new series of five volumes has been written with both the professional engineers and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and crucially important areas of mechanical engineering, from both the theoretical and practical standpoints. As all products need to be designed to withstand the environmental conditions to which they are likely to be subjected, prototypes must be verified by calculation and laboratory tests, the latter according to specifications from national or international standards. The concept of tailoring the product to its environment has gradually developed whereby, from the very start of a design project, through the to the standards specifications and testing procedures on th e prototype, the real environment in which the product being tested will be functioning is taken into account. The five volumes of Mechanical Shock and Vibration cover all the issues that need to be addressed in this area of mechanical engineering. The theoretical analyses are placed in the context of the real world and of laboratory tests - essential for the development of specifications. Volume IV: Fatigue Damage Fatigue damage in a system with one degree of freedom is one of the two criteria applied when comparing the severity of vibratory environments. The same criterion is also employed for a specifciation representing the effects produced by the set of vibrations imposed in a real environment. In this volume, which is devoted to the calculation of fatigue damage, the author explores the hypotheses adopted to describe the behavior of material suffering fatigue and the laws of fatigue accumulation. He also considers the methods of counting the response peaks, which are used to establish the histogram when it is impossible to use the probability density of the peaks obtained with a Gaussian signal. The expressions for mean damage and its standard deviation are established and other hypotheses are tested.
Download or read book Selection and Performance of Vibration Tests written by Allen J. Curtis and published by . This book was released on 1971 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Vibration and Shock Analysis Sinusoidal Vibration written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Vibration and Shock Analysis, Second Edition Volume 1: Sinusoidal Vibration The relative and absolute response of a mechanical system with a single degree of freedom is considered for arbitrary excitation, and its transfer function defined in various forms. The characteristics of sinusoidal vibration are examined in the context both of the real world and of laboratory tests, and for both transient and steady state response of the single-degree-of-freedom system. Viscous damping and then nonlinear damping are considered. The various types of swept sine perturbations and their properties are described and, for the one-degree-of-freedom system, the consequence of an inappropriate choice of sweep rate are considered. From the latter, rules governing the choice of suitable sweep rates are developed. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.
Download or read book Peak Criterion in Random sine Vibration Testing written by H. R. Spence and published by . This book was released on 1961 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sinusoidal vibration has practical value as a substitute for random vibration in equipment qualification testing. How and when to employ a sinusoidal substitution is discussed in this paper. In particular a damage criteria is discussed which relates the number of sinusoidal peaks occurring while passing through a resonance to the number of random peaks exceeding a specified amplitude value. Formulae are given for the sine-random response relationship with formulae and a diagram for the random test duration to be used with the amplitude relationship. (Author).
Download or read book Random Vibration in Perspective written by Wayne Tustin and published by . This book was released on 1984 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Vibration and Shock Analysis Sinusoidal Vibration written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2014-05-12 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Everything engineers need to know about mechanical vibration and shock...in one authoritative reference work! This fully updated and revised 3rd edition addresses the entire field of mechanical vibration and shock as one of the most important types of load and stress applied to structures, machines and components in the real world. Examples include everything from the regular and predictable loads applied to turbines, motors or helicopters by the spinning of their constituent parts to the ability of buildings to withstand damage from wind loads or explosions, and the need for cars to maintain structural integrity in the event of a crash. There are detailed examinations of underlying theory, models developed for specific applications, performance of materials under test conditions and in real-world settings, and case studies and discussions of how the relationships between these affect design for actual products. Invaluable to engineers specializing in mechanical, aeronautical, civil, electrical and transportation engineering, this reference work, in five volumes is a crucial resource for the solution of shock and vibration problems. The relative and absolute response of a mechanical system with a single degree of freedom is considered for an arbitrary excitation, and its transfer function is defined in various forms. The characteristics of sinusoidal vibration are examined in the context both of the real world and of laboratory tests, and for both transient and steady state response of the one-degree-of-freedom system. Viscous damping and then non-linear damping are considered. The various types of swept sine perturbations and their properties are described and, for the one-degree-of-freedom system, the consequence of an inappropriate choice of sweep rate are considered. From the latter, rules governing the choice of suitable sweep rates are then developed.
Download or read book Random Vibration and Statistical Linearization written by John Brian Roberts and published by Courier Corporation. This book was released on 2003-12-09 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained volume explains the general method of statistical linearization and its use in solving random vibration problems. Numerous examples show advanced undergraduate and graduate students many practical applications. 1990 edition.
Download or read book Random Vibration and Shock Testing written by Wayne Tustin and published by . This book was released on 2005-01-01 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: A minimal mathematics introduction to the fundamentals of vibration and shock testing, HALT, ESS and HASS, also measurements, analysis and calibration, with applications in the fields of aeronautical, automotive, seismic and shipboard design and production.
Download or read book Vibration Analysis for Electronic Equipment written by Dave S. Steinberg and published by Wiley-Interscience. This book was released on 1988-12-14 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guide to quick methods for designing electronic equipment that must withstand severe vibration and shock--and the only book that shows how to predict the operational life of electronic equipment, based on the component type and type of vibration and shock exposure. This 2nd Edition presents new material, never published before, on predicting fatigue life in sinusoidal vibration, random vibration and acoustic noise, and pyrotechnic shock. Each new concept is given one or more detailed sample problems, and there is extensive coverage of testing methods. Treatment is kept as simple as possible (consistent with the important governing equations), with emphasis on actual, currently-used hardware.
