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Vibration Problems in Machines: Diagnosis and Resolution
by Arthur W. LeesVibration Problems in Machines explains how to infer information about the internal operations of rotating machines from external measurements through methods used to resolve practical plant problems. Second edition includes summary of instrumentation, methods for establishing machine rundown data, relationship between the rundown curves and the ideal frequency response function. The section on balancing has been expanded and examples are given on the strategies for balancing a rotor with a bend, with new section on instabilities. It includes case studies with real plant data, MATLAB® scripts and functions for the modelling and analysis of rotating machines.
Vibration Testing and Applications in System Identification of Civil Engineering Structures
by Heung-Fai Lam Jia-Hua YangThis book covers vibration testing and identification of dynamic structural systems. It starts from the fundamentals of structural dynamics, and covers the methods of modal analysis and model identification, vibration tests and the related experimental setup. It concludes with an outline of the authors‘ software, demonstrating practical applications, and illustrated with real-world case studies of full-scale structures. Theory is presented and derived step-by-step, with a detailed measurement system developed for vibration tests. This book is written for Masters students and enables them to understand the theories of system identification and empowers them to apply this in practice.
Vibration Theory and Applications with Finite Elements and Active Vibration Control
by Alan PalazzoloBased on many years of research and teaching, this book brings together all the important topics in linear vibration theory, including failure models, kinematics and modeling, unstable vibrating systems, rotordynamics, model reduction methods, and finite element methods utilizing truss, beam, membrane and solid elements. It also explores in detail active vibration control, instability and modal analysis. The book provides the modeling skills and knowledge required for modern engineering practice, plus the tools needed to identify, formulate and solve engineering problems effectively.
Vibration Utilization Engineering
by Bangchun Wen XianLi Huang Yinong Li Yimin ZhangThis book proposes “Vibration Utilization Engineering,” using harmful vibrations in many cases for energy harvesting. Scope of the book includes, but not limited to, linear and nonlinear system of vibrations, waves (sound wave and light wave), wave motion and energy utilization, the electric–magnetic oscillation utilization in engineering, the phenomena, patterns, and utilization of the vibrations in Nature and human social society. It is all based on the theory of vibration utilization technology and equipment technological process, linear and pseudo-linear vibration, nonlinear vibration. This new subject branch is closely associated with numerus applications in industrial or agricultural production, medical apparatus and equipment and daily life, etc. It could create significant economic and social benefits and provide significant values for society and excellent service for human life.
Vibration with Control
by Daniel J. InmanAn advanced look at vibration analysis with a focus on active vibration suppression As modern devices, from cell phones to airplanes, become lighter and more flexible, vibration suppression and analysis becomes more critical. Vibration with Control, 2nd Edition includes modelling, analysis and testing methods. New topics include metastructures and the use of piezoelectric materials, and numerical methods are also discussed. All material is placed on a firm mathematical footing by introducing concepts from linear algebra (matrix theory) and applied functional analysis when required. Key features: Combines vibration modelling and analysis with active control to provide concepts for effective vibration suppression. Introduces the use of piezoelectric materials for vibration sensing and suppression. Provides a unique blend of practical and theoretical developments. Examines nonlinear as well as linear vibration analysis. Provides Matlab instructions for solving problems. Contains examples and problems. PowerPoint Presentation materials and digital solutions manual available for instructors. Vibration with Control, 2nd Edition is an ideal reference and textbook for graduate students in mechanical, aerospace and structural engineering, as well as researchers and practitioners in the field.
Vibrational (Springer Mineralogy)
by Nikita V. Chukanov Marina F. VigasinaThe book presents new data on the IR spectra of minerals and on the Raman spectra of more than 2000 mineral species. It also includes examples of IR spectroscopy applications to investigate minerals, and discusses the most important potential applications of Raman spectroscopy in mineralogical research. The book serves as a reference resource and a methodological guide for mineralogists, petrologists and technologists working in the field of inorganic materials.
Vibrational Properties of Defective Oxides and 2D Nanolattices
by Emilio ScaliseGe and III-V compounds, semiconductors with high carrier mobilities, are candidates to replace Si as the channel in MOS devices. 2D materials - like graphene and MoS_2 - are also envisioned to replace Si in the future. This thesis is devoted to the first-principles modeling of the vibrational properties of these novel channel materials. The first part of the thesis focuses on the vibrational properties of various oxides on Ge, making it possible to identify the vibrational signature of specific defects which could hamper the proper functioning of MOSFETs. The second part of the thesis reports on the electronic and vibrational properties of novel 2D materials like silicene and germanene, the Si and Ge 2D counterparts of graphene. The interaction of these 2D materials with metallic and non-metallic substrates is investigated. It was predicted, for the first time, and later experimentally confirmed, that silicene could be grown on a non-metallic template like MoS_2, a breakthrough that could open the door to the possible use of silicene in future nanoelectronic devices.
Vibrations and Stability: Advanced Theory, Analysis, and Tools
by Jon Juel ThomsenAn ideal text for students that ties together classical and modern topics of advanced vibration analysis in an interesting and lucid manner. It provides students with a background in elementary vibrations with the tools necessary for understanding and analyzing more complex dynamical phenomena that can be encountered in engineering and scientific practice. It progresses steadily from linear vibration theory over various levels of nonlinearity to bifurcation analysis, global dynamics and chaotic vibrations. It trains the student to analyze simple models, recognize nonlinear phenomena and work with advanced tools such as perturbation analysis and bifurcation analysis. Explaining theory in terms of relevant examples from real systems, this book is user-friendly and meets the increasing interest in non-linear dynamics in mechanical/structural engineering and applied mathematics and physics. This edition includes a new chapter on the useful effects of fast vibrations and many new exercise problems.
Vibrations and Waves (M.I.T. Introductory Physics Series)
by A. P. French<p>The M.I.T. Introductory Physics Series is the result of a program of careful study, planning, and development that began in 1960. The Education Research Center at the Massachusetts Institute of Technology (formerly the Science Teaching Center) was established to study the process of instruction, aids thereto, and the learning process itself, with special reference to science teaching at the university level. <p>Generous support from a number of foundations provided the means for assembling and maintaining an experienced staff to co-operate with members of the Institute's Physics Department in the examination, improvement, and development of physics curriculum materials for students planning careers in the sciences. After careful analysis of objectives and the problems involved, preliminary versions of textbooks were prepared, tested through classroom use at M.I.T. and other institutions, re-evaluated, rewritten, and tried again. Only then were the final manuscripts undertaken.</p>
Vibrations, Dynamics and Structural Systems 2nd edition
by Madhujit MukhopadhyayThis textbook is the student edition of the work on vibrations, dynamics and structural systems. There are exercises included at the end of each chapter.
Vibrations in the Production System: Measurement and Analysis with Water Jet Technology (SpringerBriefs in Applied Sciences and Technology)
by Štefánia Olejárová Juraj Ružbarský Tibor KrenickýThis book presents the current situation in measurement and analysis of vibrations in production systems with the usage of water jet technology, focusing on sieve analysis and its principle of functioning. The authors compare the sizes of vibration accelerations amplitude with and without the usage of a narrow grain fraction. The data collection and frequency spectrum analysis presented form the basis for further research in this area. It is designed for researchers, educated public, students and university teachers with a technical focus on monitoring and diagnostics of technical equipment.
Vibrations of Elastic Systems
by Edward B. MagrabThis work presents a unified approach to the vibrations of elastic systems as applied to MEMS devices, mechanical components, and civil structures. Applications include atomic force microscopes, energy harvesters, and carbon nanotubes and consider such complicating effects as squeeze film damping, viscous fluid loading, in-plane forces, and proof mass interactions with their elastic supports. These effects are analyzed as single degree-of-freedom models and as more realistic elastic structures. The governing equations and boundary conditions for beams, plates, and shells with interior and boundary attachments are derived by applying variational calculus to an expression describing the energy of the system. The advantages of this approach regarding the generation of orthogonal functions and the Rayleigh-Ritz method are demonstrated. A large number of graphs and tables are given to show the impact of various factors on the systems' natural frequencies, mode shapes, and responses.
Vibrations of Elastic Systems: With Multiphysics Applications (Solid Mechanics and Its Applications #184)
by Edward B. MagrabThis book presents new topics such as Inerters in spring-mass models and attached to beams; fluid loading on beams, plates, and shells; bio-inspired vibration isolation and absorption; coupled bending and torsion of beams; beams with functionally graded materials; as well as a new chapter on the Mindlin/Timoshenko plate theory: rectangular and circular. New applications and enhancements to the previous edition include moving mass on beams; thin beams with attached pendulum; transient response of beams with in-span attachments; and shells to model blood flow in arteries.
Vibrations of mechanical systems with regular structure
by Mark Kempner Ludmilla BanakhVibrations in systems with a periodic structure is the subject of many ongoing research activities. This work presents the analysis of such systems with the help of the theory of representation groups by finite element methods, dynamic Compliance and dynamic rigidness methods, specially adjusted for the analysis of engineering structures. The approach presented in this book permits a simplification and facilitates the understanding of mechanical vibrations in various structures. The book includes extended studies of even complicated machinery structures with an emphasis on flight vehicle engines.
Vibrations of Power Plant Machines: A Guide for Recognition of Problems and Troubleshooting
by Franz Herz Rainer NordmannThis book offers professionals working at power plants guidelines and best practices for vibration problems, in order to help them identify the respective problem, grasp it, and successfully solve it. The book provides very little theoretical information (which is readily available in the existing literature) and doesn’t assume that readers have an extensive mathematical background; rather, it presents a range of well-documented, real-world case studies and examples drawn from the authors’ 50 years of experience at jobsites. Vibration problems don’t crop up very often, thanks to good maintenance and support, but if and when they do, most power plants have very little experience in assessing and solving them. Accordingly, the case studies discussed here will equip power plant engineers to quickly evaluate the vibration problem at hand (by deciding whether the machine is at risk or can continue operating) and find a practical solution.
Vibrations of Rotating Machinery: Volume 2. Advanced Rotordynamics: Applications of Analysis, Troubleshooting and Diagnosis (Mathematics for Industry #16)
by Masato Tanaka Osami Matsushita Hiroshi Kanki Masao Kobayashi Patrick KeoghBuilding on the previous volume “Vibrations of Rotating Machinery - Volume 1. Basic Rotordynamics: Introduction to Practical Vibration Analysis,” this book is intended for all practical designers and maintenance experts who are responsible for the reliable manufacturing and operation of rotating machinery. It opens with the dynamics of oil film bearings and their influences on unbalance, vibration resonance and the stability of rotor whirl motion. Subsequently, the book introduces readers to vibration diagnosis techniques for traditional ball bearings and active vibration control from magnetic bearings. Case studies on vibration problems and troubleshooting in industrial turbo machines are then presented and explained, showing rotor designers how to eliminate instability and modify resonance characteristics. Torsional vibration and other coupled vibration phenomena are discussed, and vibration measurement techniques and related signal processing procedures for vibration diagnosis are provided. Our latest three topics are included, covering: (a) the importance of the modeling order reduction (MOR) technique; (b) the approximate evaluation for oil-wheel/whip instability; and (c) a systematic method for shafting-blading coupled vibration analyses. In closing, a 100-question trial test is supplied as an example of the certification of vibration experts based on the ISO standard.
Vibro-Acoustics: Fundamentals and Applications
by Dhanesh N. ManikThe subject of vibro-acoustics is important for the design of machine elements and structures, to minimize sound generated by them. For better machine designing, it is necessary for machine designers (mechanical engineers) to have a thorough knowledge of vibro-acoustics. Furthermore, since the design cycles of machines have become shorter, designers will have to design quiet machines at the drawing-board stage rather than applying "band-aid" techniques after the machine has been built. Although there is common ground in the treatment of acoustics, the subject of vibration is not very fortunate. Those interested in low-frequency vibration are generally concerned with the modal approach of using natural frequencies and mode shapes, whereas those interested in vibro-acoustics in medium and high frequencies are generally concerned with the wave approach. Since both modal and wave approaches have their advantages, it is a good idea to study both together to get the best out of them. This is useful for a better understanding the physics of vibro-acoustics. Written for students and professionals interested in gaining knowledge, this book systematically integrates the relevant aspects of vibro-acoustics from various viewpoints.
Vibro-Acoustics of Lightweight Sandwich Structures
by Tianjian Lu Fengxian XinVibro-Acoustics of Lightweight Sandwich Structures introduces the study of the coupled vibration and acoustic behavior of lightweight sandwich structures in response to harmonic force and sound pressure. This book focuses on the theoretical modeling and experimental investigation of lightweight sandwich structures in order to provide a predictive framework for vibro-acoustic characteristics of typical engineering structures. Furthermore, by developing solution tools, it concentrates on the influence of key systematic parameters leading to effective guidance for optimal structure design toward lightweight, high-stiffness and superior sound insulation capability. This book is intended for researchers, scientists, engineers and graduate students in mechanical engineering especially in structural mechanics, mechanics and acoustics. Fengxian Xin and Tianjian Lu both work at the School of Aerospace, Xi'an Jiaotong University.
Vibro-Acoustics, Volume 1
by Bilong Liu Anders NilssonThis three-volume book gives a thorough and comprehensive presentation of vibration and acoustic theories. Different from traditional textbooks which typically deal with some aspects of either acoustic or vibration problems, it is unique of this book to combine those two correlated subjects together. Moreover, it provides fundamental analysis and mathematical descriptions for several crucial phenomena of Vibro-Acoustics which are quite useful in noise reduction, including how structures are excited, energy flows from an excitation point to a sound radiating surface, and finally how a structure radiates noise to a surrounding fluid. Many measurement results included in the text make the reading interesting and informative. Problems/questions are listed at the end of each chapter and the solutions are provided. This will help the readers to understand the topics of Vibro-Acoustics more deeply. The book should be of interest to anyone interested in sound and vibration, vehicle acoustics, ship acoustics and interior aircraft noise. This is the first volume, and covers the following topics: Mechanical systems with one degree of freedom, Frequency domain, Waves in solids, Interaction between longitudinal and transverse waves, General wave equation, Wave attenuation due to losses and transmission across junctions, Longitudinal vibrations of finite beams, Flexural vibrations of finite beams, Flexural vibrations of finite plates.
Vibroacoustic Simulation: An Introduction to Statistical Energy Analysis and Hybrid Methods
by Alexander PeifferVIBROACOUSTIC SIMULATION Learn to master the full range of vibroacoustic simulation using both SEA and hybrid FEM/SEA methods Vibroacoustic simulation is the discipline of modelling and predicting the acoustic waves and vibration of particular objects, systems, or structures. This is done through finite element methods (FEM) or statistical energy analysis (SEA) to cover the full frequency range. In the mid-frequency range, both methods must be combined into a hybrid FEM/SEA approach. By doing so, engineers can model full frequency vibroacoustic simulations in complex technical systems used in aircraft, trains, cars, ships, and satellites. Indeed, hybrid approaches are increasingly used in the automotive, aerospace, and rail industries. Previously covered primarily in scientific journals, Vibroacoustic Simulation provides a practical approach that helps readers master the full frequency range of vibroacoustic simulation. Through a systematic approach, the book illustrates why both FEM and SEA are necessary in acoustic engineering and how both can be used in combination through hybrid methodologies. Striking a crucial balance between complex theories and practical applications, the text provides real-world examples of vibroacoustic simulation, such as fuselage simulation, interior-noise prediction for electric and combustion vehicles, train profiles, and more, to help elucidate the concepts described within. Vibroacoustic Simulation also features: A balance of complex theories with the nuts and bolts of real-world applications Detailed worked examples of junction equations Case studies from companies like Audi and Airbus that illustrate how the methods discussed have been applied in real-world projects A companion website that provides corresponding Python codes for all examples, allowing readers to work through the examples on their own Vibroacoustic Simulation is a useful reference for acoustic and mechanical engineers working in the automotive, aerospace, defense, or rail industries, as well as researchers and graduate students studying acoustics.
Vicki Cobb's Why Do I Dry Off?: STEM Kids Discover the Science of Evaporation (STEM Play)
by Vicki CobbHow do you dry off? Find out how in this new, colorful, easy-to-read STEM book! &“STEM&” is an acronym for Science, Technology, Engineering, and Math. Though these subjects are incredibly important to both education and society as a whole, they are often overlooked, especially after primary education is complete. A goal of this book is to introduce STEM to kids and make them excited about learning these central subjects. In Why Do I Dry Off?, your child will learn all about evaporation and the process of liquid changing into gas, an important part of the water cycle. Accomplished author and educator Vicki Cobb teaches your child all about this important aspect of STEM, while still making it fun and entertaining through bright illustrations, easy-to-understand language, and experiments broken down step-by-step. Your child will be so enthralled, they won&’t even realize they&’re learning! Introduce your child to vital STEM subjects and encourage them to learn about the world around them with Why Do I Dry Off?!
Vicki Cobb's Why Does My Ice Cream Melt?: Smart Answers to STEM Questions (STEM Play)
by Vicki CobbWhy does ice cream melt? Find out how in this new, colorful, easy-to-read STEM book! &“STEM&” is an acronym for Science, Technology, Engineering, and Math. Though these subjects are incredibly important to both education and society as a whole, they are often overlooked, especially after primary education is complete. A goal of this book is to introduce STEM to kids and make them excited about learning these central subjects. In Why Does My Ice Cream Melt?, your child will learn all about the states of water, including the water cycle. Accomplished author and educator Vicki Cobb teaches your child all about this important aspect of STEM, while still making it fun and entertaining through bright illustrations, easy-to-understand language, and experiments broken down step-by-step. Your child will be so enthralled, they won&’t even realize they&’re learning! Introduce your child to vital STEM subjects and encourage them to learn about the world around them with Why Does My Ice Cream Melt?!
Victim Prime (Victim #2)
by Robert SheckleyIn 2092 the world&’s ecology is in ruins, drought and famine are widespread, and survival is a never-ending challenge. Harold Erdman leaves his dying community with one goal: to make his way to Esmeralda, an island paradise run by the Huntworld Corporation, which has turned public murder among willing competitors into a thriving and lucrative business. Can he survive the journey and the many rounds of deadly competition on his way to the Big Payoff? His neighbors&’ lives, as well as his own, hang in the balance. Hilarious, savagely funny, and imaginative, this is Sheckley at his best! From the very beginning of his career, Robert Sheckley was recognized by fans, reviewers, and fellow authors as a master storyteller and the wittiest satirist working in the science fiction field. Open Road is proud to republish his acclaimed body of work, with nearly thirty volumes of full-length fiction and short story collections. Rediscover, or discover for the first time, a master of science fiction who, according to the New York Times, was &“a precursor to Douglas Adams.&”
Victims of Fashion (Science in History)
by Helen Louise CowieAnimal products were used extensively in nineteenth-century Britain. A middle-class Victorian woman might wear a dress made of alpaca wool, drape herself in a sealskin jacket, brush her hair with a tortoiseshell comb, and sport feathers in her hat. She might entertain her friends by playing a piano with ivory keys or own a parrot or monkey as a living fashion accessory. In this innovative study, Helen Cowie examines the role of these animal-based commodities in Britain in the long nineteenth century and traces their rise and fall in popularity in response to changing tastes, availability, and ethical concerns. Focusing on six popular animal products – feathers, sealskin, ivory, alpaca wool, perfumes, and exotic pets – she considers how animal commodities were sourced and processed, how they were marketed and how they were consumed. She also assesses the ecological impact of nineteenth-century fashion.