Vibration And Noise Reduction In Planetary Gear Train By Phasing

Author : Ashutosh Mokate
Publisher : Anchor Academic Publishing
Page : 117 pages
File Size : 53,5 Mb
Release : 2016-07
Category : Technology & Engineering
ISBN : 9783960670186

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VIBRATION AND NOISE REDUCTION IN PLANETARY GEAR TRAIN BY PHASING by Ashutosh Mokate Pdf

Gears are essential parts of many precision power transmitting machines such as automobiles. The major functions of a gearbox are to transform speed and torque in a given ratio and to change the axis of rotation. Planetary gears yield several advantages over conventional parallel shaft gear systems: They produce high speed reductions in compact spaces, a greater load sharing, a higher torque to weight ratio, diminished bearing loads, and reduced noise and vibration. They are used in automobiles, helicopters, aircraft engines, heavy machinery, and a variety of other applications. Despite their advantages, the noise induced by the vibration of planetary gear systems remains a key concern. Planetary gears have received considerably less research attention than single mesh gear pairs. There is a particular scarcity of analysis of two planetary gear systems and their dynamic response. Hence, this book focuses on the study of two PGTs with different phasing (angular positions) while every individual set remains unchanged.

Author : Yong Chen
Publisher : Springer Nature
Page : 577 pages
File Size : 48,5 Mb
Release : 2020-07-30
Category : Technology & Engineering
ISBN : 9789811567032

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Automotive Transmissions by Yong Chen Pdf

This book introduces readers to the theory, design and applications of automotive transmissions. It covers multiple categories, e.g. AT, AMT, CVT, DCT and transmissions for electric vehicles, each of which has its own configuration and characteristics. In turn, the book addresses the effective design of transmission gear ratios, structures and control strategies, and other topics that will be of particular interest to graduate students, researchers and engineers. Moreover, it includes real-world solutions, simulation methods and testing procedures. Based on the author’s extensive first-hand experience in the field, the book allows readers to gain a deeper understanding of vehicle transmissions.

Author : Tetsuzo Akutsu,R.C. Eberhart,Hitoshi Koyanagi,M. Hachida,K. Imachi,K. Kataoka,M. Kitamura,K. Minami,S. Nitta,C. Nojiri,V.L. Poirier,P.M. Portner,Y. Taenaka,S. Takatani,M. Umezu,R. Yozu
Publisher : Springer Science & Business Media
Page : 413 pages
File Size : 41,9 Mb
Release : 2013-11-11
Category : Medical
ISBN : 9784431670230

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Heart Replacement by Tetsuzo Akutsu,R.C. Eberhart,Hitoshi Koyanagi,M. Hachida,K. Imachi,K. Kataoka,M. Kitamura,K. Minami,S. Nitta,C. Nojiri,V.L. Poirier,P.M. Portner,Y. Taenaka,S. Takatani,M. Umezu,R. Yozu Pdf

It is with great pleasure that we here present Artificial Heart 4 (proceedings of the 4th international symposium on artificial heart and assist devices). The symposium was held in Tokyo, Japan, on August 7 and 8, 1992 under the patronage of Mr. Hiromitsu Yoshioka, Chairman of the Board of Trustees, Tokyo Women's Medical College. Artificial heart 4 consists of the papers presented in nine sessions: Oral Presentations A to E, Forums 1 to 10, and nine lectures by invited guest speakers from the United States and Europe. In this volume, papers from two new sessions, sessions IV and VII, entitled New Approaches, were prepared for devices and systems developed according to new ideas. Twenty-one papers in these two sessions were presented in five Forums (3, 4, 7, 8, and 9). Session VI was provided to deal with heart transplantation, which is now closely related to both ventricular assist systems (VAS) and the total artificial heart (TAH). In this session, papers by two guest speakers from major heart transplantation centers in Europe were included.

Author : SAE Transmission/Axle/Driveline Forum Committee
Publisher : SAE International
Page : 771 pages
File Size : 55,6 Mb
Release : 2012-05-22
Category : Technology & Engineering
ISBN : 9780768011258

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Design Practices by SAE Transmission/Axle/Driveline Forum Committee Pdf

Since the mid-20th Century, automatic transmissions have benefited drivers by automatically changing gear ratios, freeing the driver from having to shift gears manually. The automatic transmission's primary job is to allow the engine to operate in its speed range while providing a wide range of output (vehicle) speeds automatically. The transmission uses gears to make more effective use of the engine's torque and to keep the engine operating at an appropriate speed. For nearly half a century, Design Practices: Passenger Car Automatic Transmissions has been the “go-to” handbook of design considerations for automatic transmission industry engineers of all levels of experience. This latest 4th edition represents a major overhaul from the prior edition and is arguably the most significant update in its long history. In summary, the authors have put together the most definitive handbook for automatic transmission design practices available today. Virtually all existing chapters have been updated and improved with the latest state-of-the-art information and many have been significantly expanded with more detail and design consideration updates; most notably for torque converters and start devices, gears/splines/chains, bearings, wet friction, one-way clutch, pumps, seals and gaskets, and controls. All new chapters have also been added, including state-of-the-art information on: • Lubrication • Transmission fluids • Filtration • Contamination control Finally, details about the latest transmission technologies—including dual clutch and continuously variable transmissions—have been added.

Author : Jiri Tuma
Publisher : John Wiley & Sons
Page : 235 pages
File Size : 51,5 Mb
Release : 2014-02-20
Category : Technology & Engineering
ISBN : 9781118797617

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Vehicle Gearbox Noise and Vibration by Jiri Tuma Pdf

Advances in methods of gear design and the possibility of predicting the sound pressure level and life time of gearboxes and perfect instrumentation of test stands allows for the production of a new generation of quiet transmission units. Current literature on gearbox noise and vibration is usually focused on a particular problem such as gearbox design without a detailed description of measurement methods for noise and vibration testing. Vehicle Gearbox Noise and Vibration: Measurement, Signal Analysis, Signal Processing and Noise Reduction Measures addresses this need and comprehensively covers the sources of noise and vibration in gearboxes and describes various methods of signal processing. It also covers gearing design, precision manufacturing, measuring the gear train transmission error, noise test on testing stands and also during vehicle pass-by tests. The analysis tools for gearbox inspection are based on the frequency and time domain methods, including envelope and average toothmesh analysis. To keep the radiated noise under control, the effect of load, the gear contact ratio and the tooth surface modification on noise and vibration are illustrated by measurement examples giving an idea how to reduce transmission noise. Key features: Covers methods of processing noise and vibration signals Takes a practical approach to the subject and includes a case study covering how to successfully reduce transmission noise Describes the procedure for the measurement and calculation of the angular vibrations of gears during rotation Considers various signal processing methods including order analysis, synchronous averaging, Vold-Kalman order tracking filtration and measuring the angular vibration Vehicle Gearbox Noise and Vibration: Measurement, Signal Analysis, Signal Processing and Noise Reduction Measures is a comprehensive reference for designers of gearing systems and test engineers in the automotive industry and is also a useful source of information for graduate students in automotive and noise engineering.

Author : J. Derek Smith
Publisher : CRC Press
Page : 300 pages
File Size : 54,5 Mb
Release : 2003-04-08
Category : Technology & Engineering
ISBN : 9780203912478

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Gear Noise and Vibration by J. Derek Smith Pdf

Based on over 40 years of consultation and teaching experience, Gear Noise and Vibration demonstrates logical gear noise and vibration approaches without the use of complex mathematics or lengthy computation methods. The second edition offers new and extended discussions on high- and low-contact ratio gears, lightly loaded gears, planetary and split drives, and transmission error (T.E.) measurement. A straightforward source for enhanced gear design, assessment, and development practices, the book is enriched with more than 150 figures. It offers the most economic solutions to gear design obstacles and details current challenges and troubleshooting schemes for improved gear installation.

Author : Datong Qin
Publisher : CRC Press
Page : 1081 pages
File Size : 52,9 Mb
Release : 2016-11-10
Category : Technology & Engineering
ISBN : 9781315386812

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Power Transmissions by Datong Qin Pdf

This book presents papers from the International Conference on Power Transmissions 2016, held in Chongqing, China, 27th-30th October 2016. The main objective of this conference is to provide a forum for the most recent advances, addressing the challenges in modern mechanical transmissions. The conference proceedings address all aspects of gear and power transmission technology and a range of applications. The presented papers are catalogued into three main tracks, including design, simulation and testing, materials and manufacturing, and industrial applications. The design, simulation and testing track covers topics such as new methods and designs for all types of transmissions, modelling and simulation of power transmissions, strength, fatigue, dynamics and reliability of power transmissions, lubrication and sealing technologies and theories, and fault diagnosis of power transmissions. In the materials and manufacturing track, topics include new materials and heat treatment of power transmissions, new manufacturing technologies of power transmissions, improved tools to predict future demands on production systems, new technologies for ecologically sustainable productions and those which preserve natural resources, and measuring technologies of power transmissions. The proceedings also cover the novel industrial applications of power transmissions in marine, aerospace and railway contexts, wind turbines, the automotive industry, construction machinery, and robots.

Author : Herbert Ho-Ching Iu,Abdelali El Aroudi
Publisher : MDPI
Page : 435 pages
File Size : 41,6 Mb
Release : 2019-07-01
Category : Technology & Engineering
ISBN : 9783039211104

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Control and Nonlinear Dynamics on Energy Conversion Systems by Herbert Ho-Ching Iu,Abdelali El Aroudi Pdf

The ever-increasing need for higher efficiency, smaller size, and lower cost make the analysis, understanding, and design of energy conversion systems extremely important, interesting, and even imperative. One of the most neglected features in the study of such systems is the effect of the inherent nonlinearities on the stability of the system. Due to these nonlinearities, these devices may exhibit undesirable and complex dynamics, which are the focus of many researchers. Even though a lot of research has taken place in this area during the last 20 years, it is still an active research topic for mainstream power engineers. This research has demonstrated that these systems can become unstable with a direct result in increased losses, extra subharmonics, and even uncontrollability/unobservability. The detailed study of these systems can help in the design of smaller, lighter, and less expensive converters that are particularly important in emerging areas of research like electric vehicles, smart grids, renewable energy sources, and others. The aim of this Special Issue is to cover control and nonlinear aspects of instabilities in different energy conversion systems: theoretical, analysis modelling, and practical solutions for such emerging applications. In this Special Issue, we present novel research works in different areas of the control and nonlinear dynamics of energy conversion systems.

Author : Rajiv Tiwari
Publisher : Springer Nature
Page : 577 pages
File Size : 47,9 Mb
Release : 2024-06-29
Category : Electronic
ISBN : 9789819989867

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Vibration Engineering and Technology of Machinery, Volume II by Rajiv Tiwari Pdf

Author : Anonim
Publisher : Unknown
Page : 236 pages
File Size : 45,8 Mb
Release : 1984
Category : Gearing, Planetary
ISBN : UIUC:30112106737320

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Dynamics of Planetary Gear Trains by Anonim Pdf

Author : Kiril Arnaudov,Dimitar Petkov Karaivanov
Publisher : CRC Press
Page : 428 pages
File Size : 43,7 Mb
Release : 2019-03-27
Category : Technology & Engineering
ISBN : 9780429857980

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Planetary Gear Trains by Kiril Arnaudov,Dimitar Petkov Karaivanov Pdf

This book provides comprehensive information for various planetary gear trains, with practical applications and comprehensive references to technical articles. In the text's chapters, readers can find all the information needed for various types of gear trains, with illustrations and examples. The authors help gear designers to creatively understand the design of gears, as well as master the mechanical calculations needed. Planetary Gear Trains is the most comprehensive and up-to-date work available in this key technical area. The book reflects not only teaching, but also the practical experience of the authors. It was developed under the motto "From practice to practice".

Author : Caihua Xiong,Yongan Huang,Youlun Xiong
Publisher : Springer
Page : 1284 pages
File Size : 52,8 Mb
Release : 2008-10-14
Category : Medical
ISBN : 9783540885139

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Intelligent Robotics and Applications by Caihua Xiong,Yongan Huang,Youlun Xiong Pdf

These two volumes constitute the refereed proceedings of the First International Conference on Intelligent Robotics and Applications, ICIRA 2008, held in Wuhan, China, in October 2008. The 265 revised full papers presented were thoroughly reviewed and selected from 552 submissions; they are devoted but not limited to robot motion planning and manipulation; robot control; cognitive robotics; rehabilitation robotics; health care and artificial limb; robot learning; robot vision; human-machine interaction & coordination; mobile robotics; micro/nano mechanical systems; manufacturing automation; multi-axis surface machining; realworld applications.

Author : Anonim
Publisher : Unknown
Page : 822 pages
File Size : 40,7 Mb
Release : 1972
Category : Mechanical engineering
ISBN : UOM:39015006085115

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Paper by Anonim Pdf

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 126 pages
File Size : 49,6 Mb
Release : 2018-06-15
Category : Electronic
ISBN : 1721099182

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Modeling, Modal Properties, and Mesh Stiffness Variation Instabilities of Planetary Gears by National Aeronautics and Space Administration (NASA) Pdf

Planetary gear noise and vibration are primary concerns in their applications in helicopters, automobiles, aircraft engines, heavy machinery and marine vehicles. Dynamic analysis is essential to the noise and vibration reduction. This work analytically investigates some critical issues and advances the understanding of planetary gear dynamics. A lumped-parameter model is built for the dynamic analysis of general planetary gears. The unique properties of the natural frequency spectra and vibration modes are rigorously characterized. These special structures apply for general planetary gears with cyclic symmetry and, in practically important case, systems with diametrically opposed planets. The special vibration properties are useful for subsequent research. Taking advantage of the derived modal properties, the natural frequency and vibration mode sensitivities to design parameters are investigated. The key parameters include mesh stiffnesses, support/bearing stiffnesses, component masses, moments of inertia, and operating speed. The eigen-sensitivities are expressed in simple, closed-form formulae associated with modal strain and kinetic energies. As disorders (e.g., mesh stiffness variation. manufacturing and assembling errors) disturb the cyclic symmetry of planetary gears, their effects on the free vibration properties are quantitatively examined. Well-defined veering rules are derived to identify dramatic changes of natural frequencies and vibration modes under parameter variations. The knowledge of free vibration properties, eigen-sensitivities, and veering rules provide important information to effectively tune the natural frequencies and optimize structural design to minimize noise and vibration. Parametric instabilities excited by mesh stiffness variations are analytically studied for multi-mesh gear systems. The discrepancies of previous studies on parametric instability of two-stage gear chains are clarified using perturbation and numerical methods. The ope

Author : Giorgio Dalpiaz,Riccardo Rubini,Gianluca D'Elia,Marco Cocconcelli,Fakher Chaari,Radoslaw Zimroz,Walter Bartelmus,Mohamed Haddar
Publisher : Springer Science & Business Media
Page : 678 pages
File Size : 45,8 Mb
Release : 2013-10-05
Category : Technology & Engineering
ISBN : 9783642393488

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Advances in Condition Monitoring of Machinery in Non-Stationary Operations by Giorgio Dalpiaz,Riccardo Rubini,Gianluca D'Elia,Marco Cocconcelli,Fakher Chaari,Radoslaw Zimroz,Walter Bartelmus,Mohamed Haddar Pdf

This book presents the processing of the third edition of the Condition Monitoring of Machinery in Non-Stationary Operations (CMMNO13), which was held in Ferrara, Italy. This yearly event merges an international community of researchers who met – in 2011 in Wroclaw (Poland) and in 2012 in Hammamet (Tunisia) – to discuss issues of diagnostics of rotating machines operating in complex motion and/or load conditions. The growing interest of the industrial world on the topics covered by the CMMNO13 involves the fields of packaging, automotive, agricultural, mining, processing and wind machines in addition to that of the systems for data acquisition. The participation of speakers and visitors from industry makes the event an opportunity for immediate assessment of the potential applications of advanced methodologies for the signal analysis. Signals acquired from machines often contain contributions from several different components as well as noise. Therefore, the major challenge of condition monitoring is to point out the signal content that is related to the state of the monitored component particularly in non-stationary conditions.