Faststofmekanik

This book presents the proceedings of the XVI International Conference on Vibration Engineering and Technology of Machinery (VETOMAC 2021). It gathers the latest advances, innovations, and applications in the field of vibration and technology of machinery. Topics include concepts and methods in dynamics, dynamics of mechanical and structural systems, dynamics and control, condition monitoring, machinery and structural dynamics, rotor dynamics, experimental techniques, finite element model updating, industrial case studies, vibration control and energy harvesting, and MEMS. The contributions, which were selected through a rigorous international peer-review process, share exciting ideas that will spur novel research directions and foster new multidisciplinary collaborations. The book is useful for the researchers, engineers and professionals working in the area of vibration engineering and technology of machinery.

This book offers a current image of modern mechanics. The book reflects current state of the art in the field of continuum mechanics and mechanics of structures including recent achievements in classic and non-classic approaches. The chapters are written by leading specialist in the field, so the book collects cutting edge investigations in the field. As a target we consider the society starting from beginners, i.e. master and PhD students, and also leaders in the field, that is professors of universities and civil, mechanical and aerospace engineers.

The tuned mass damper is one of the classic dynamic vibration absorbers with effective devices for energy dissipation and vibration reduction. The electromagnetically tuned mass damper system is extensively used for vibration reduction in engineering. A better understanding of the nonlinear dynamics of the electromagnetically tuned mass damper system is very important to optimize the parameters of such systems for vibration reduction. However, until now, one cannot fully understand complex periodic motions in such a nonlinear, electromagnetically tuned mass damper system. In this book, the semi-analytical solutions of periodic motions are presented through period-1, period-3, period-9, and period-12 motions. The corresponding stability and bifurcations of periodic motions are determined. The frequency-amplitude characteristics for bifurcation routes of such higher-order periodic motions are presented. This book helps people better understand the dynamical behaviors of an electromagnetically tuned mass damper system for the new development and design of vibration reduction and energy harvesting systems.

This book highlights a systematic introduction to the basic theory of elastic wave propagation in complex media. The theory of elastic waves is widely used in fields such as geophysical exploration, seismic survey, medical ultrasound imaging, nondestructive testing of materials and structures, phononic crystals, metamaterials and structure health monitoring. To help readers develop a systematic grasp of the basic theory, and thus its applications, the book elaborates on the theory of elastic wave propagation in isotropic solid media, covering phenomena in infinite media, interfaces, layered structure with finite thickness, Rayleigh wave and Love wave propagating along the surface of semi-infinite solid and covering layer, and the guided waves and leaky waves in flat plates and in cylindrical rods. The propagation patterns and features of guided waves in cylindrical shells and spherical shells are also introduced. The author wrote the book based on a decade of teaching experience of a graduate course of the same name and two decades of research on the theory and applications. The book is a valuable reference for students, researchers and professionals who expect an understandable and comprehensive discussion of the theory, analytical methods and related research results.

This book presents the most recent research advances in the theory, design, control, and application of robotic systems, which are intended for a variety of purposes such as manipulation, manufacturing, automation, surgery, locomotion, and biomechanics.

This book reports on innovative research in solid and fluid mechanics, and thermal engineering, giving a special emphasis on methods, modeling, and simulation tools for analyzing material behavior and energy systems. It gathers the best papers presented at 15th International Moroccan Congress of Mechanics "Congrès de Mécanique", CMM 2022, held on May 24-27, 2022, in Casablanca, Morocco, and organized by the Moroccan Society of Mechanics (SMSM) and the Faculty of Science Ain Chock of the University of Hassan II, Casablanca, Morocco. With a good balance of theory and practice, the book offers a timely snapshot of current advances in mechanics, and a source of inspiration for future research and international collaborations.

This book introduces the principles and characteristics of friction stir welding and processing. Based on the inherent issues of friction stir welding, such as back support, weld thinning, and keyhole defects, the book summarizes innovative technologies related to solution strategies and presents a wide range of examples. It introduces the advantages and joining mechanism of friction stir welding in the joining of dissimilar materials and explains the importance of combining metallurgical bonding and mechanical joining. It also includes the characteristics of friction stir processing in terms of microstructure refinement, mechanical properties, surface modification, and the preparation of composites. This book is of interest to a broad readership in various fields of materials science and engineering.

The aim of this book is to educate the beneficiaries of this technology, because there is so little awareness and understanding of what can be achieved with tuned mass dampers and vibration absorbers and of the relatively small increase in mass and complexity in exchange for the tremendous benefit in vibration reduction. It introduces the feedback approach to help understand why these devices work and are very helpful in modeling the devices on complicated structures. The hardware demonstrators are simple and directly scalable to more complicated structures. Once a reader successfully operates the demonstration hardware, the concepts in the book are directly scalable to implementations on very complex structures like airplanes and rockets. A recipe is provided to 3D print most of the parts as well as easy-to-find brackets and sensors. The whole kit can be assembled in an afternoon. The directions will be similar in detail to a DIY magazine article, providing simple, step-by-step procedures. Via app: download the SN More Media app for free, scan a link with play button and access MP4 directly on your smartphone or tablet.

This textbook has been primarily written for undergraduate and postgraduate engineering students studying the mechanics of solids and structural systems. The content focuses on matrix, finite elements, structural analysis, and computer implementation in a unified and integrated manner. Using classical methods of structural analysis, it discusses matrix and the finite element methods in an easy-to-understand manner. It consists of a large number of diagrams and illustrations for easy understanding of the concepts. All the computer codes are presented in "e;FORTRAN"e; AND "e;C"e;. This textbook is highly useful for the undergraduate and postgraduate engineering students. It also acquaints the practicing engineers about the computer-based techniques used in structural analysis.

Computer Vision & Laser Vibrometry, Volume 6: Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics, 2023, the sixth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Computer Vision, Laser Vibrometry and Structural Health Monitoring, including papers on:Novel TechniquesOptical Methods,Scanning LDV MethodsPhotogrammetry & DICStructural Health Monitoring

This book provides selected papers presented at the 2nd International Conference on Industrial Applications of Adhesives 2022, held in Carvoeiro, Portugal, 3-4 March 2022.The volume focuses on applications of adhesive bonding in the industry such as automotive, aeronautic, railway, marine, energy, and electronics. A wide range of topics like adhesion assessment between polymers and metals, pressure sensitive adhesives, adhesive bonding process optimization, civil applications, adhesive joints in composite materials and elastic adhesives are covered.The book presents the latest results and innovations in this field, useful for adhesive producers and adhesive users.

This book covers vibroacoustic monitoring, inertial attitude systems, and control system for device processing in complex objects. Modern approaches to the synthesis of algorithmic support for a strapdown inertial attitude system are considered. The general characteristics of navigation systems and the composition of their inertial measurement unit are given. The methods of initial alignment of the system on a stationary base are described. Particular attention is paid to the attitude kinematic parameters of the body frame and methods of their numerical integration. Picard's methods for integrating the Bortz and Poisson kinematic equations are shown. An algorithm for a strapdown inertial attitude system based on using real signals of high-precision laser gyroscopes is proposed. System simulation was carried out using the proposed algorithmic methods.The relevance of the control system created for the processing device parts in the conditions of automated manufacturing is substantiated. Theoretical studies are presented, and the relation between electrical signals, the level of tool wear, and the main reasons for generating electrical signals are identified. A mathematical model of cutting tool wear control was developed based on measuring the variable component of cutting electromotive force. A control system for processing device parts on computer numerical control machines in automated production conditions has been developed. It allows for recording critical wear and breakage of the cutting tool, performing its dimensional adjustment directly on the device, and carrying out its industrial approval in flexible production systems.

This book presents a collection of articles reporting the current challenges in solid and fracture mechanics. The book is devoted to the 90th birthday of academician Nikita F. Morozov-a well-known specialist in the field of solid and fracture mechanics.

This book is aimed to provide comprehensive and systematic knowledge of kinematic synthesis as developed up to date. Modern mechanical systems require advance kinematics knowledge to support mechanism design with sound theories and methods. The book includes not only the classical foundations of kinematic synthesis, but also the latest advances developed by the authors. Moreover, many examples are included to illustrate both methods and their supporting theory.The focus is on systems of rigid bodies forming closed loops. The four-bar linkage, representing the foundations of mechanical systems,  is given due attention, in its three domains: planar, spherical, and spatial. The book contains six chapters, the first two covering fundamentals for kinematic synthesis, including qualitative synthesis. Chapters 3-5 describe, in full detail,  the function, motion, and path syntheses of single-dof linkages.  In the last chapter, the synthesis of single-dof complex linkages, including six-bar and ten-bar linkages, is introduced.The book is suitable for graduate students of mechanical engineering, researchers of mechanism and robot design, and machine design engineers.

This book gathers a large amount of recent research results on this topic to better understand the static creep micrömacro fracture mechanics in brittle solids (e.g., glass, ceramic, concrete, ice, and rock). To be precise, this is about to explore the effects of the external factors of stress paths, water content, seepage pressure, dynamic disturbance, thermal treated temperature, and the internal factors of crack angle, size, recovery, and nucleation coalescence on the static creep fracture mechanical properties in brittle solids. This book provides important theoretical support in evaluation for long-term lifetime in the brittle solid engineering (e.g., deep underground engineering, architecture engineering, aerospace engineering, and mechanical manufacturing engineering).

This book focuses on the vibration behavior of ceramic-matrix composites (CMCs), including (1) vibration natural frequency of intact and damaged CMCs; (2) vibration damping of CMCs considering fibers debonding and fracture; (3) temperature-dependent vibration damping of CMCs; (4) time-dependent vibration damping of CMCs; and (5) cyclic-dependent vibration damping of CMCs. Ceramic-matrix composites (CMCs) possess low material density (i.e., only 1/4 or 1/3 of high-temperature alloy) and high-temperature resistance, which can reduce cooling air and improve structure efficiency. Understanding the failure mechanisms and internal damage evolution represents an important step to ensure reliability and safety of CMCs. Relationships between microstructure, damage mechanisms, vibration natural frequency, and vibration damping of CMCs are established. This book helps the material scientists and engineering designers to understand and master the vibration behavior of CMCs at room and elevated temperatures.

The book presents formulations and examples of three-dimensional non-axisymmetric stability in viscoelastic anisotropic cylindrical shells. The most critical stability loss modes are determined by minimizing the critical loads and critical times with respect to the number of half-waves in radial as well as transverse directions.Currently, there is no literature available on three-dimensional local buckling analysis (or localized warpage) that considers non-axisymmetric stability loss in viscoelastic cylindrical shells. The contents of this book provide the formulation for such a stability loss analysis through the framework of the three-dimensional linearized theory of stability. Additionally, as this book addresses the problem by modeling the material as a viscoelastic fibrous composite, it can be applied to carry out buckling analysis in both elastic and viscoelastic cases.Guide to modelling composite viscoelastic shell elements for buckling analysisProvides a framework for defining the failure criterion for viscoelastic materialsCourse material for teaching shell buckling and viscoelastic composites

"This book introduces the computational tool, Computational Grains, used in micromechanical modeling of heterogeneous materials. Presenting the theory step-by-step and with MATLAB codes, the material is accessible and practical for readers. Ideal for graduate students and researchers in mechanical and aerospace engineering and applied mechanics"--

Das gut eingefuhrte Werk Ebene Flachentragwerke erscheint nun in der 2. Auflage. Ausgehend von einer Klassifikation der Modelle ebener Flachentragwerke und den Grundgleichungen der linearen Elastizitatstheorie werden zunachst systematisch die Gleichungen fur isotrope Scheiben und Platten abgeleitet. Dabei wird ein didaktisch einheitliches Konzept eingesetzt. Die Gleichungen werden in kartesischen Koordinaten, Polarkoordinaten und schiefwinkligen Koordinaten formuliert. In Erganzung der ersten Auflage wird auch eine Plattentheorie in koordinatenfreier Schreibweise behandelt, so dass der Leser einen leichteren Zugang zu modernen Konzepten der Formulierung von Flachentragwerkstheorien erhalt. Die Diskussion der Plattenmodelle nach Kirchhoff, Mindlin und von Karman zeigt die Moglichkeiten und Grenzen dieser Strukturmodelle.Fur schubstarre und schubelastische Platten mit kleinen Durchbiegungen wird auch anisotropes Materialverhalten einbezogen, und es werden die Strukturgleichungen der klassischen Laminattheorie und der Schubdeformationstheorie erster Ordnung angegeben. Es folgt ein kurzer Einblick in Theorien zur Analyse dreischichtiger Platten. Die Berucksichtigung vorgegebener Temperaturfelder erfolgt fur alle Plattenmodelle im Rahmen der entkoppelten Thermoelastizitat.Der Leser erhalt einen umfassenden Uberblick uber die Anwendung bedeutsamer Strukturmodelle ebener Flachentragwerke. Die nach Aufgabenklassen geordneten zahlreichen Beispiele konnen als Referenzlosungen zur Testung numerischer Verfahren genutzt werden. Die Aufnahme der sogenannten Reduktionsverfahren von Wlassow und Kantorowitsch soll ihre Leistungsfahigkeit fur die Ableitung einfacher und analytischer Naherungslosungen durch die Reduktion der Strukturgleichungen auf eindimensionale Formulierungen verdeutlichen.

This book collects original peer-reviewed papers describing the latest developments in railway noise and vibration from the 14th International Workshop on Railway Noise (IWRN14), held on 7¿9 December 2022, in Shanghai, China. It covers a broad range of railway noise and vibration topics, including high-speed rail and aerodynamic noise, wheel and rail noise, curving squeal noise, bridge noise, vehicle interior noise, structure-borne noise, and ground-borne vibration. Further topics such as resilient track forms, wheel out-of-round and polygonalization, rail roughness, corrugation and grinding, etc. are also covered. With the extensive and timely information offered, this book helps scientists and engineers in their daily efforts to identify, understand, and solve problems related to railway noise and vibration and to achieve the ultimate goal of minimizing the environmental impact of railway systems.

This book explores the research fields of engineering cybernetics, bionics, artificial self-recovery and engineering self-recoveries. It explains the scientific and technological research results of artificial self-recovery, autonomous health technology and the application cases of assisted rehabilitation and autonomous health engineering. It provides guidance, latest research trends and development direction for researchers, scholars and engineers engaged in mechanical equipment fault diagnosis and autonomous health. 

Nonlinear Structures & Systems, Volume 1: Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics, 2023, the first volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Nonlinear Dynamics, including papers on:Experimental Nonlinear DynamicsJointed Structures: Identification, Mechanics, DynamicsNonlinear DampingNonlinear Modeling and SimulationNonlinear Reduced-Order ModelingNonlinearity and System Identification

Fatigue occurs under cyclic loading and can significantly degrade the operational capability and safety of metallic aircraft components and structures. This book provides summaries of some metallic aircraft structural integrity issues, innovative but established examples of maintaining operational capability¿airworthiness, and assessments of safe in-service fatigue lives. These topics are based on a through-life fatigue management philosophy that ensures safe and continued operation, including during life extensions that are almost inevitably required. This philosophy is underpinned by observations of the behaviour of fatigue cracks in actual structures subjected to realistic service loading conditions. The book includes topics like aircraft design requirements, individual aircraft fatigue loads monitoring, airframe fatigue testing, sources of fatigue-nucleating discontinuities, and prediction of fatigue crack growth from these discontinuities. All these aspects contribute to discussing methods of assuring the structural integrity and operational capability of realistically cracked structures. The book also discusses the exponential behaviour of lead or dominant cracks¿those leading to first failure¿and the practical significance of differences between fatigue fracture topographies produced under constant amplitude and variable amplitude loading. The book can be a valuable reference for researchers and professionals interested in aircraft fatigue management and allied fields.

This volume gathers select proceedings of the 10th International Conference on Wave Mechanics and Vibrations (WMVC), held in Lisbon, Portugal, on July 4-6, 2022. It covers recent developments and cutting-edge methods in wave mechanics and vibrations applied to a wide range of engineering problems. It presents analytical and computational studies in structural mechanics, seismology and earthquake engineering, mechanical engineering, aeronautics, robotics and nuclear engineering among others. The volume will be of interest for students, researchers, and professionals interested in the wide-ranging applications of wave mechanics and vibrations. 

This textbook has been written for the engineering students. This textbook covers the essentials of solid mechanics with reference to basic load-bearing members¿straight bars, thin-walled cylindrical and spherical pressure vessels, circular shafts, beams undergoing simple bending, and columns. It concisely elucidates the corresponding fundamental assumptions, important equations, and their range of validity without formal derivations. Subsequently, this textbook contains several carefully selected examples to illustrate sequence of steps in the analysis of forces, stresses and displacements, or stability. It further deals with combined loading, stress and strain transformations, energy methods, and failure analysis using commonly employed criteria. This textbook is a handy, yet complete, resource for graduate and postgraduate engineering students. It will also be a ready reference for a practicing engineers or graduate students preparing for an interview or a competitive examination.

This book discusses the features of composite materials and arch structures. Providing an in-depth fundamental and practical guide to the field, it systemically addresses all aspects of concrete-filled steel tubular (CFST) arch bridges, including a comprehensive overview on technical developments, structural systems, structural detailing, design and analysis, construction technology, and maintenance. The real-world examples presented have been carefully selected to highlight the advanced theoretical and technological solutions for CFST arch bridges and to motivate researchers to promote innovative and sustainable development in the area.The book couples fundamental concepts with advanced practices translated from the third edition of the author's Chinese book on CFST arch bridges, which has been the most significant book on the topic since the first edition published in 1999. This English translation can servers as an idea textbook for postgraduate students in the fields of civil, construction and environmental engineering, especially in bridge engineering, as well as a perfect review and reference guide for engineering practitioners and researchers.

This book is intended to establish a bridge between the GB 50010, Fib MC2010, BS 8110 and ACI 318 or EC2. The respective pros and cons of different theories and methods according to various standards are compared or analyzed. Undergraduate and graduate students, foreign exchange students of international classes at Chinese universities who desire to work in China, or who are willing to work abroad in the field of civil engineering can benefit from the book. As such, this book provides valuable knowledge and useful design methods based on the different theories or guidelines.