Computational Techniques of Rotor Dynamics with the Finite Element Method, Vollan

Автор: Venkataramana Ajjarapu
Название: Computational Techniques for Voltage Stability Assessment and Control
ISBN: 1441938621 ISBN-13(EAN): 9781441938626
Издательство: Springer
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Цена: 130590.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book provides comprehensive details on continuation power flow, and reviews concepts in bifurcation theory and continuation methods for assessing power system voltage stability. The author proposes a uniform framework that provides computational approaches for both short-term and long-term voltage stability phenomena.

Автор: Subbiah
Название: Rotor and Structural Dynamics of Turbomachinery
ISBN: 3319732951 ISBN-13(EAN): 9783319732954
Издательство: Springer
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Цена: 107130.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book provides engineers and scientists with practical fundamentals for turbomachinery design. It presents a detailed analysis of existing procedures for the analysis of rotor and structure dynamics, while keeping mathematical equations to a minimum.  Specific terminologies are used for rotors and structures, respectively, allowing the readers to clearly distinguish between the two.  Further, the book describes the essential concepts needed to understand rotor failure modes due to lateral and torsional oscillations. It guides the reader from simple single-degree-of-freedom models to the most complex multi-degree-of-freedom systems, and provides useful information concerning steel pedestal stiffness degradation and other structural issues. Fluid-film bearing types and their dynamical behavior are extensively covered and discussed in the context of various turbomachinery applications. The book also discusses shaft alignment and rotor balancing from a practical point of view, providing readers with essential information to help them solve practical problems.  As the main body of the book focuses on the diagnostics and description of case studies addressing the most pressing practical issues, together with their successful solutions, it offers a valuable reference guide, helping field engineers manage day-to-day issues with turbomachinery.

Автор: Tshilidzi Marwala
Название: Finite Element Model Updating Using Computational Intelligence Techniques
ISBN: 1849963223 ISBN-13(EAN): 9781849963220
Издательство: Springer
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Цена: 139310.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book details advanced methods for tuning finite element simulations to measured data. Case studies demonstrate the principles and test the viability of the approaches. Coverage also critically analyzes the state of the art in FEM updating.

Автор: Joe Iannelli
Название: Characteristics Finite Element Methods in Computational Fluid Dynamics
ISBN: 3642064302 ISBN-13(EAN): 9783642064302
Издательство: Springer
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Цена: 269260.00 T
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Описание: This book details a systematic characteristics-based finite element procedure to investigate incompressible, free-surface and compressible flows.

Автор: Mykhaylo V Zagirnyak, Zhanna Iv Romashykhina, Andrii P Kalinov
Название: Diagnostics of Induction Motor Broken Rotor Bars on the Basis of the Electromotive Force Analysis
ISBN: 1536126837 ISBN-13(EAN): 9781536126839
Издательство: Nova Science
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Цена: 103480.00 T
Наличие на складе: Невозможна поставка.
Описание: Under the conditions of increased energy resources consumption, the researchers around the world face the problem of rational energy use. One of the ways to solve this problem consists of introducing energy saving technologies into the operation of electrotechnical and electromechanical devices. The operation of electric machines (EM) is very often accompanied by the occurrence of various damages. It results in increased energy consumption, untimely failure of electromechanical systems and, consequently, growth of material expenditure. Operation efficiency of electric equipment can be improved due to timely diagnostics of EM damages at early stages of their development. It is for this reason that research in diagnostics of EMs containing induction motors (IM) is of special interest nowadays. Researchers succeeded in searching for efficient methods of IM diagnostics that are mostly suitable for particular conditions and modes of equipment operation. There are different methods for diagnostics of induction motor broken rotor bars. However, the analysis of conventional diagnostics methods revealed that most of them require the removal of the induction motor from the operation process and its disassembling. Presently, such methods of IM broken rotor bars diagnostics in operation modes such as methods of currents spectral analysis, the analysis of zero-phase sequence voltages, and the analysis of external magnetic field parameters are known. Nevertheless, these methods do not provide satisfactory results during diagnostics under a no-load condition and do not take into account that low-quality voltage of the supply network and the fluctuation of load level influence the diagnostic results. Besides, the results of the Fourier transform of current signals does not allow for unambiguous identification of the number and relative position of IM broken rotor bars. Hence, the development of the method for diagnostics of IM broken rotor bars is a topical scientific and applied problem. A method for diagnostics of IM broken rotor bars on the basis of the analysis of electromotive force (EMF) in the stator windings is presented in the monograph. To research IM as a diagnostics object, the circuit mathematical models and those related to the final element method have been developed. The efficiency of the use of the wavelet analysis of the EMF signal in the stator windings under IM self-running-out condition has been demonstrated. A method for EMF signal decomposition with the use reverse z-transform theory has been proposed to improve the reliability of damaged diagnostics. The presented monograph contains theoretical and experimental research that made it possible to solve the topical scientific problem of improving the efficiency of IM broken rotor bars with the use of the signal of electromotive force wavelet analysis in the stator windings under the motor self-running-out condition.

Автор: F. I. Niordson
Название: Dynamics of Rotors
ISBN: 3642487866 ISBN-13(EAN): 9783642487866
Издательство: Springer
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Цена: 113190.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Apart from a financial contribution from IUTAM to sup- port travel and subsistence of invited participants, generous contributions were received from the following Danish Companies: Burmeister & Wain, Danfoss, The Danish Sugar- corporation, DISA, Elsinore Shipbuilding Engineer, Kyndby- v~rket, Niro Atomizer, and the Swedish Company STAL-LAVAL.

Автор: O. Mahrenholtz
Название: Dynamics of Rotors
ISBN: 3211818464 ISBN-13(EAN): 9783211818466
Издательство: Springer
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Цена: 113190.00 T
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Автор: Zu-Qing Qu
Название: Model Order Reduction Techniques with Applications in Finite Element Analysis
ISBN: 1849969248 ISBN-13(EAN): 9781849969246
Издательство: Springer
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Цена: 153720.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Winner of the 2003 Thomas and Znaniecki Award, this book based on extensive research in all of the major Israeli communities including New York, Paris and London, looks at their reasons for leaving, their relations with Israelis who have not left and with the Jewish and non-Jewish communities in the countries in which they settle, as well as those who after years of emigration, decide to return.