analytical methods in rotor dynamics second edition mechanisms and machine science

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Analytical Methods In Rotor Dynamics

Author : Andrew D. Dimarogonas
ISBN : 9789400759053
Genre : Technology & Engineering
File Size : 43. 17 MB
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The design and construction of rotating machinery operating at supercritical speeds was, in the 1920s, an event of revolutionary importance for the then new branch of dynamics known as rotor dynamics. In the 1960s, another revolution occurred: In less than a decade, imposed by operational and economic needs, an increase in the power of turbomachinery by one order of magnitude took place. Dynamic analysis of complex rotor forms became a necessity, while the importance of approximate methods for dynamic analysis was stressed. Finally, the emergence of fracture mechanics, as a new branch of applied mechanics, provided analytical tools to investigate crack influence on the dynamic behavior of rotors. The scope of this book is based on all these developments. No topics related to the well-known classical problems are included, rather the book deals exclusively with modern high-power turbomachinery.

Advances In Mechanism Design Ii

Author : Jaroslav Beran
ISBN : 9783319440873
Genre : Technology & Engineering
File Size : 71. 27 MB
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This book presents the most recent advances in the research of machines and mechanisms. It collects 54 reviewed papers presented at the XII International Conference on the Theory of Machines and mechanisms (TMM 2016) held in Liberec, Czech Republic, September 6-8, 2016. This volume offers an international selection of the most important new results and developments, grouped in six different parts, representing a well-balanced overview, and spanning the general theory of machines and mechanisms, through analysis and synthesis of planar and spatial mechanisms, linkages and cams, robots and manipulators, dynamics of machines and mechanisms, rotor dynamics, computational mechanics, vibration and noise in machines, optimization of mechanisms and machines, mechanisms of textile machines, mechatronics to the control and monitoring systems of machines. This conference is traditionally organised every four year under the auspices of the international organisation IFToMM and the Czech Society for Mechanics.

Vibration Engineering And Technology Of Machinery

Author : Jyoti K. Sinha
ISBN : 9783319099187
Genre : Technology & Engineering
File Size : 45. 26 MB
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The VETOMAC-X Conference covered a holistic plethora of relevant topics in vibration and engineering technology including condition monitoring, machinery and structural dynamics, rotor dynamics, experimental techniques, finite element model updating, industrial case studies, vibration control and energy harvesting, and signal processing. These proceedings contain not only all of the nearly one-hundred peer-reviewed presentations from authors representing more than twenty countries, but also include six invited lectures from renowned experts: Professor K. Gupta, Mr W. Hahn, Professor A.W. Lees, Professor John Mottershead, Professor J.S. Rao, and Dr P. Russhard. This work is of interest to researchers and practitioners alike, and is an essential book for most of libraries of higher academic institutes.

Revue Roumaine Des Sciences Techniques

Author :
ISBN : UCAL:B4428227
Genre : Mechanics, Applied
File Size : 66. 11 MB
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Scientific And Technical Aerospace Reports

Author :
ISBN : UIUC:30112075701448
Genre : Aeronautics
File Size : 51. 91 MB
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Scientific And Technical Books In Print

Author :
ISBN : UOM:39015035608390
Genre : Engineering
File Size : 59. 57 MB
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Applied Mechanics Reviews

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ISBN : UIUC:30112046051782
Genre : Mechanics, Applied
File Size : 70. 60 MB
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Author : Hatto Schneider
ISBN : 9783662059418
Genre : Technology & Engineering
File Size : 65. 92 MB
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Auswuchten ist für die Qualitätssicherung von Rotoren ein unverzichtbarer Schritt. Mit jeder Weiterentwicklung der Rotoren – mit neuen Konzepten, Materialien und Bearbeitungsmethoden – verändern sich die Anforderungen an die Auswuchttechnik. Auf der Suche nach der optimalen Lösung dieser komplexen Aufgabe helfen keine Patentrezepte, sondern nur ein fundiertes Wissen über die theoretischen Hintergründe des Auswuchtens, seine praktische Durchführung und die Leistungsfähigkeit der verschiedenen Auswuchtsysteme. Dieses Buch dient als Werkzeug, mit dem die immer neu auftretenden Probleme beim Auswuchten sachgerecht und wirtschaftlich gelöst werden können. Es beschreibt den aktuellen Wissensstand und die Normung auf diesem Spezialgebiet. Es unterstützt die systematische Einarbeitung in dieses Fachgebiet – im Studium ebenso wie in der Industrie. Der erfahrene Leser wird es als Nachschlagewerk zur Lösung von Detailfragen heranziehen.

Mechanical Engineering

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ISBN : UCSD:31822008319568
Genre : Mechanical engineering
File Size : 78. 83 MB
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Linear And Nonlinear Control Of Small Scale Unmanned Helicopters

Author : Ioannis A. Raptis
ISBN : 9400700237
Genre : Technology & Engineering
File Size : 67. 22 MB
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There has been significant interest for designing flight controllers for small-scale unmanned helicopters. Such helicopters preserve all the physical attributes of their full-scale counterparts, being at the same time more agile and dexterous. This book presents a comprehensive and well justified analysis for designing flight controllers for small-scale unmanned helicopters guarantying flight stability and tracking accuracy. The design of the flight controller is a critical and integral part for developing an autonomous helicopter platform. Helicopters are underactuated, highly nonlinear systems with significant dynamic coupling that needs to be considered and accounted for during controller design and implementation. Most reliable mathematical tools for analysis of control systems relate to modern control theory. Modern control techniques are model-based since the controller architecture depends on the dynamic representation of the system to be controlled. Therefore, the flight controller design problem is tightly connected with the helicopter modeling. This book provides a step-by-step methodology for designing, evaluating and implementing efficient flight controllers for small-scale helicopters. Design issues that are analytically covered include: • An illustrative presentation of both linear and nonlinear models of ordinary differential equations representing the helicopter dynamics. A detailed presentation of the helicopter equations of motion is given for the derivation of both model types. In addition, an insightful presentation of the main rotor's mechanism, aerodynamics and dynamics is also provided. Both model types are of low complexity, physically meaningful and capable of encapsulating the dynamic behavior of a large class of small-scale helicopters. • An illustrative and rigorous derivation of mathematical control algorithms based on both the linear and nonlinear representation of the helicopter dynamics. Flight controller designs guarantee that the tracking objectives of the helicopter's inertial position (or velocity) and heading are achieved. Each controller is carefully constructed by considering the small-scale helicopter's physical flight capabilities. Concepts of advanced stability analysis are used to improve the efficiency and reduce the complexity of the flight control system. Controller designs are derived in both continuous time and discrete time covering discretization issues, which emerge from the implementation of the control algorithm using microprocessors. • Presentation of the most powerful, practical and efficient methods for extracting the helicopter model parameters based on input/output responses, collected by the measurement instruments. This topic is of particular importance for real-life implementation of the control algorithms. This book is suitable for students and researches interested in the development and the mathematical derivation of flight controllers for small-scale helicopters. Background knowledge in modern control is required.

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