Maskinteknik

This book presents the research outcomes from cooperative projects with industrial partners. It showcases the practical relevance of the research, features the knowledge exchange. The papers cover a wide range of engineering disciplines, highlighting the impact of these collaborations in addressing real-world challenges and advancing technological developments.

This book presents the proceedings of the IUTAM Symposium on Optimal Design and Control of Multibody Systems 2022, covering research papers in the realm of optimal structural and control design for both rigid and flexible multibody systems. It delves into the application of the adjoint approach, enabling the undertaking of extensive topology optimizations to unearth body designs that excel under time- and design-dependent loads. Encompassing presentations on (adjoint) sensitivity analysis, structural optimization, optimal control, robust optimization, artificial intelligence, machine learning, and computational methods and software development, the IUTAM Symposium 2022 showcased the latest breakthroughs and innovative methodologies. This book presents 14 meticulously peer-reviewed proceedings papers from the event, evenly split between the Optimal Design and Optimal Control panels.

This book provides insights into current research topics of powertrains for the next generation of electric vehicles as well as related vehicle components (e-axles, transmissions, brake systems, etc.). Further, as the interaction with the charging infrastructure becomes more and more important, also the topic charging is discussed in detail. Finally, communication and control not just within the vehicles but also with the infrastructure are needed and are treated in this book.Chapter ¿Towards digitalisation of the charging value chain¿ and Chapter ¿Definition of a set of indicators for the EV impact assessment¿ are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

This book provides a comprehensive overview of the mechanical distinctions between fretting damage under axial or bending external forces and fretting damage under a torsional load. It emphasizes the importance of studying practical accident cases to efficiently acquire technical skills. The book is structured around the fundamental technologies of material science, tribology, and mechanics, which are vital for understanding and addressing technical issues. The author has incorporated all fretting countermeasure technologies, which were previously often sensory and empirical in nature, and repositioned them as technologies grounded in fundamental principles. The book proposes an economical approach to product operation that maintains reliability by integrating not only design technology but also maintenance practices.It delves into specific materials, such as titanium alloys and aluminum alloys, which have seen increased use for weight reduction in industries like aerospace.In this book, ¿Critical Distance Stress Theory¿ that can easily derive the fatigue limit and fatigue life of the stress singular field at the contact edge was presented. As a result, the fretting fatigue strength and life can be predicted from the same FEM stress analysis as the normal stress concentration part.And finally, introducing a novel fretting mechanical model, the book focuses on scenarios where pressure force (N) and repeated tangential force (F) are applied to two planar objects, with the tangential force being transmitted solely through friction at the contact surface. This model finds relevance in turbine blade connection structures, among other applications. The author references Asai's research example, which encompasses fretting mechanical analysis, fretting wear evaluation, fatigue assessment, and structural damping evaluation using this model.

This book provides findings on the simulation of the valve dynamic to the current technological standards. Above all, it delivers a simulation based and predictive approach on the fatigue strength assessment of four-stroke heavy-duty engine valves. The demand for more efficient combustion engines with fuel flexibility goes along with increasing component requirements regarding strength and durability, while the development costs should remain low. In this context, the present book focuses on the gas exchange valves of heavy-duty engines. Especially, the valves on the exhaust side have an increased risk of fatigue failure. The aim of this book is the generation of a predictive fatigue strength assessment to strengthen the frontloading of the exhaust valve design process and to increase the reliability of the component. In the context of fatigue assessment, this book examines the loads of the exhaust valve during its working cycle. Beside the high temperature and cylinder pressure, further loads act on the exhaust valve like actuation force or an eccentric impact of the valve on the valve seat ring. Furthermore, a bold valve secondary dynamic in the form of valve bending vibrations is observed on the exhaust valves of heavy-duty engines increasing the valve load even more. The cause of this secondary dynamic is unknown. This book investigates the valve loads to get the necessary input for the fatigue strength assessment. With respect to a predictive approach, the determination of valve dynamic and valve loads is based on a multibody simulation model of the valve train. In order to deliver predictive results and a transferable method, this simulation model includes all relevant physical effects to describe the valve dynamic accurately during all valve load phases of the working cycle. With the simulation model, the root cause for the bold valve secondary dynamic is examined iteratively. The model delivers not only the cause for the valve secondary dynamic but most importantly the critical valve loads. These loads deliver the input for the fatigue strength assessment. To ensure the robustness of the load data determined by the simulation model, the sensitivity of influences on the valve load is examined. In this context geometrical misalignment, fluctuations in load data and variable engine operation points are considered. A load collective based on the variation of influences on the valve load is the result of this analysis. All the results of the influence and sensitivity study are generated with the newly developed simulation model of the valve train. Moreover, this book outlines measurements on a testbed engine. In scope of these measurements are temperature and strain measurements of the valve. The generated data validate the simulation model of the valve train. Additionally, the statistical evaluation of the data is used in the subsequent fatigue strength assessment to increase the reliability of the results.

This new proceedings discusses developments in air, gas and refrigeration compressors, vacuum pumps, and expanders. It is the 13th edition of the International Conference on Compressors and their Systems, a three-day conference organised by the Centre for Compressors Technology at City, University of London in collaboration with, among other, the MEchE, IIR, and IOR.The conference offers a platform to identify current challenges in the field and provide the essential content and direction to shape future research. The International Conference on Compressors and their Systems series began in 1999 as a result of industrial consultation and a need for academic collaboration. Initially, the conference was organised by the Fluid Machinery Group of the Institution of Mechanical Engineers (IMechE) with the support of Holroyd. From 2009, the Centre for Compressor Technology at City, University of London took over its management and the conference is now one of the main conventions,taking place biennially in the UK, becoming world-renowned for its place in industry and academia to gather and discuss a broad range of topical issues related to compressors and compression systems.This year's conference has the theme "Compressors and Expanders in Future Energy Systems¿ and will be of interest to researchers and engineers in industry.

Dieses Lehrbuch zeigt an einfachen und nachvollziehbaren Beispielen, wie der Simulationsprozess Schritt für Schritt erfolgreich durchgeführt werden kann. Aber auch speziellere tiefergehende Themen aus den Bereichen Mechanik, Hydraulik und Elektrik werden behandelt und bringen einen starken Praxisbezug. Auch die Frage, wie man Simulation in einen modernen Entwicklungsprozess integrieren kann, wird beantwortet. Zahlreiche Beispiele in Form von Modellen für das weit verbreitete Simulationsprogramm MATLAB®/Simulink® ermöglichen ein Selbststudium. Einige Beispielprogramme stehen zum Download bereit, der entsprechende Link ist auf der ersten Seite des jeweiligen Kapitels zu finden. Die vorliegende Auflage wurde überarbeitet und um das Kapitel Simulation mit Hilfe von künstlichen neuronalen Netzen (KNN) erweitert.Der InhaltSimulationsvarianten - Dynamiksimulation - Standardverfahren zur Modellierung - Zustandsraumdarstellung - Numerische Integrationsverfahren - Modellbildung - Experimentelle Modellbildung - Modelle vereinfachen - Beispiele aus den Bereichen Mechanik, Hydraulik und Elektrik - Simulation mit künstlichen neuronalen Netzen (KNN) - Tipps und TricksDie ZielgruppenStudierende des Maschinenbaus und der Mechatronik an Hochschulen und Universitäten sowie Ingenieur*innen, die sich in das Thema Simulation einarbeiten möchten.Der AutorDr.-Ing. Michael Glöckler war lange Jahre in der Industrie im Bereich System- und Softwareentwicklung tätig und ist heute Professor für Moderne Entwicklungsprozesse mit dem Schwerpunkt Simulation an der Hochschule Augsburg.

Engineers, applied scientists, students, and individuals working to reduce emissions and advance diesel engine technology will find the second edition of Diesel Emissions and Their Control to be an indispensable reference. Whether readers are at the outset of their learning journey or seeking to deepen their expertise, this comprehensive reference book caters to a wide audience.In this substantial update to the 2006 classic, the authors have expanded the coverage of the latest emission technologies. With the industry evolving rapidly, the book ensures that readers are well-informed about the most recent advances in commercial diesel engines, providing a competitive edge in their respective fields. The second edition has also streamlined the content to focus on the most promising technologies.This book is rooted in the wealth of information available on DieselNet.com, where the "Technology Guide" papers offer in-depth insights. Each chapter includes links to relevant online materials, granting readers access to even more expertise and knowledge.The second edition is organized into six parts, providing a structured journey through every aspect of diesel engines and emissions control:¿ Part I: A foundational exploration of the diesel engine, combustion, and essential subsystems.¿ Part II: An in-depth look at emission characterization, health and environmental impacts, testing methods, and global regulations.¿ Part III: A comprehensive overview of diesel fuels, covering petroleum diesel, alternative fuels, and engine lubricants.¿ Part IV: An exploration of engine efficiency and emission control technologies, from exhaust gas recirculation to engine control.¿ Part V: The latest developments in diesel exhaust aftertreatment, encompassing catalyst technologies and particulate filters.¿ Part VI: A historical journey through the evolution of diesel engine technology, with a focus on heavy-duty engines in the North American market.

This book focuses on discrete element methods for arbitrarily shaped granular materials, including super-quadric models, spherical harmonic functions and level set methods, and numerical analysis of the flow characteristics of non-spherical granular materials. This book is used as a reference book for scientific researchers engaged in dynamic analysis of granular materials and optimal design of equipment structures in the fields of engineering mechanics, applied physics, mechanical engineering, and chemical engineering, as well as for graduate students or senior undergraduates of related majors in institutions of higher education.

Biomechatronics is rapidly becoming one of the most influential and innovative research directions defining the 21st century. The second edition Biomechatronics provides a complete and up-to-date account of this advanced subject at the university textbook level. This new edition introduces two new chapters - Animals Biomechatronics and Plants Biomechatronics - highlighting the importance of the rapidly growing world population and associated challenges with food production. Each chapter is co-authored by top experts led by Professor Marko B. Popovic, researcher and educator at the forefront of advancements in this fascinating field. Starting with an introduction to the historical background of Biomechatronics, this book covers recent breakthroughs in artificial organs and tissues, prosthetic limbs, neural interfaces, orthotic systems, wearable systems for physical augmentation, physical therapy and rehabilitation, robotic surgery, natural and synthetic actuators, sensors, and control systems. A number of practice prompts and solutions are provided at the end of the book. The second edition of Biomechatronics is a result of dedicated work of a team of more than 30 contributors from all across the globe including top researchers and educators in the United States (Popovic, Lamkin-Kennard, Herr, Sinyukov, Troy, Goodworth, Johnson, Kaipa, Onal, Bowers, Djuric, Fischer, Ji, Jovanovic, Luo, Padir, Tetreault), Japan (Tashiro, Iraminda, Ohta, Terasawa), Sweden (Boyraz), Turkey (Arslan, Karabulut, Ortes), Germany (Beckerle and Wiliwacher), New Zealand (Liarokapis), Switzerland (Dobrev), and Serbia (Lazarevic).

Machining Principles for Shape Generation of Metals provides coverage of the fundamentals of machining technology and metal cutting before thoroughly explaining the Laplace transformation and how it can be applied to understand complex machining processes. The book provides an overview of all machining processes with an emphasis on machining with geometrically determinate cutting to produce superior components. Vibration control, turning, dynamics, thermal deformation, and numerical control principles of metal cutting are each discussed, as are the principles of cutting removal, forced vibration, and the physical properties of work and tool materials.

Developments in Reliability Engineering equips its audience with the necessary information to keep up with the latest original research and state-of-the-art advances in reliability engineering. The book offers an excursus from historical theories and methods to present-world, practical utility of these concepts, along with worked-out examples. Modern systems have become increasingly complex to design and build while the demand for reliability and cost-effective enhancement continues. Robust international competition has further intensified the need for all designers, managers, practitioners, scientists, and engineers to ensure a level of reliability of their products and processes before release at the lowest cost.

This book of carefully selected research papers captures the essence of systems engineering. It offers readers a comprehensive exploration in the most recent applications and advancements of Axiomatic Design, a powerful method that elevates the level of product design and manufacturing. Although Axiomatic Design originated at the Massachusetts Institute of Technology (MIT) in Boston, it has been further developed by an active community of users and academics from all over the world. For the 15th time, the International Conference on Axiomatic Design convened global experts to discuss the core of the methodology. Their shared objective was to advance systems engineering, catering to the increasing complexity of modern product design.From over 85 submissions, the program committee selected 20 papers to ensure quality and relevance. Our profound gratitude extends to the contributing authors, whose research and dedication have shaped this collection, and to the program committee members for their unwavering commitment to academic integrity. Through their combined efforts, this document stands as a testament to the innovative spirit and academic excellence synonymous with systems engineering as developed by MIT.

This book gathers invited contributions as survey and research reports in mechanism and machine science (MMS) ranging across the entire field, related in most instances to the works of late Prof. Carlos López Cajún, one of the field's most prominent scholars. The book provides state-of-the-art information and showcases the latest achievements and challenges of MMS. The book is an accessible avenue to understanding ideas and solutions by leading international scientists who offer much-needed historical insights into the MMS field with future perspectives.

This Handbook of Numerical Simulation of In-Flight Icing covers an array of methodologies and technologies on numerical simulation of in-flight icing and its applications. Comprised of contributions from internationally recognized experts from the Americas, Asia, and the EU, this authoritative, self-contained reference includes best practices and specification data spanning the gamut of simulation tools available internationally that can be used to speed up the certification of aircraft and make them safer to fly into known icing. The collection features nine sections concentrating on aircraft, rotorcraft, jet engines, UAVs; ice protection systems, including hot-air, electrothermal, and others; sensors and probes, CFD in the aid of testing, flight simulators, and certification process acceleration methods. Incorporating perspectives from academia, commercial, government R&D, the book is ideal for a range of engineers and scientists concerned with in-flight icing applications.

Das Buch vermittelt die Grundlagen des konstruktiven Entwicklungsprozesses sowie des funktionellen und geometrisch-stofflichen Aufbaus elektronischer Baugruppen und Geräte.Aktuelle Anforderungen wie Geräteschutz, Zuverlässigkeit, thermische Dimensionierung und Schirmung (EMV) stehen dabei im Vordergrund. Richtlinien zum Recycling runden den Inhalt ab. Damit soll der Leser zum ingenieurmäßigen Vorgehen bei der Entwicklung und Konstruktion moderner elektronischer Produkte unter Einbeziehung aller relevanten Aspekte befähigt werden.

This second edition builds on the foundation established by the previous first edition published in 2017. The first edition covered background information, description, and analysis of four major cooling system technologies - vapor compression cooling, evaporative cooling, absorption cooling, and gas cooling. The second edition has been expanded to include increased coverage of cooling system refrigerants, fluid mechanics, heat transfer, and building cooling loads. With increasing climate change due to the buildup of greenhouse gas emissions in the atmosphere, there has been a worldwide impetus to transition to cooling systems and refrigerants that have a low or even zero global warming potential. The text is written as a tutorial for engineering students and practicing engineers who want to become more familiar with the performance of refrigeration and air conditioning systems. The goals are to familiarize the reader with cooling technology nomenclature and provide insight into how refrigeration and air conditioning systems can be modeled and analyzed. Emphasis is placed on constructing idealized thermodynamic cycles to represent actual physical situations in cooling systems. The book contains numerous practical examples to show how one can calculate the performance of cooling system components. By becoming familiar with the analyses presented in the examples, one can gain a feel for representative values of the various thermal and mechanical parameters that characterize cooling systems. 

Control Theory for Linear Systems deals with the mathematical theory of feedback control of linear systems. It treats a wide range of control synthesis problems for linear state space systems with inputs and outputs. The book provides a treatment of these problems using state space methods, often with a geometric flavour. Its subject matter ranges from controllability and observability, stabilization, disturbance decoupling, and tracking and regulation, to linear quadratic regulation, H2 and H-infinity control, and robust stabilization. Each chapter of the book contains a series of exercises, intended to increase the reader's understanding of the material. Often, these exercises generalize and extend the material treated in the regular text.