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Author: Kerk Cheng Kee Publisher: ISBN: Category : Languages : en Pages : 68
Book Description
This thesis discusses the design of multi-mass dynamic vibration absorbers in parallel configuration subject to uncertainties in the forcing frequency. A minimax parameter optimization approach is used to determine the optimum absorber mass parameters for different numbers of vibration absorbers without changing the total vibration absorber mass (constant mass ratio). Both main mass excitation and base excitation systems are examined. The effects of increasing the number of absorber masses are analyzed qualitatively through analysis of the system transfer function as well as quantitatively via numerical simulations. Increasing the number of absorber masses is shown to give improved robustness and overall vibration reduction in the main mass at the cost of increased motion of the absorber masses.
Author: Kerk Cheng Kee Publisher: ISBN: Category : Languages : en Pages : 68
Book Description
This thesis discusses the design of multi-mass dynamic vibration absorbers in parallel configuration subject to uncertainties in the forcing frequency. A minimax parameter optimization approach is used to determine the optimum absorber mass parameters for different numbers of vibration absorbers without changing the total vibration absorber mass (constant mass ratio). Both main mass excitation and base excitation systems are examined. The effects of increasing the number of absorber masses are analyzed qualitatively through analysis of the system transfer function as well as quantitatively via numerical simulations. Increasing the number of absorber masses is shown to give improved robustness and overall vibration reduction in the main mass at the cost of increased motion of the absorber masses.
Author: Steven F. Griffin Publisher: Springer Nature ISBN: 3031433084 Category : Technology & Engineering Languages : en Pages : 76
Book Description
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.
Author: Boris G. Korenev Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 324
Book Description
A detailed and extensive description regarding the theory of passive dynamic absorbers not requiring additional energy sources. Considers the peculiarities in solving vibration absorption problems using the simplest double-mass linear model of the protected structure and absorber. Examines design schemes and offers data on the efficiency of complicated absorber models. Deals with the problems of vibration damping of continuous and multimass systems. Describes practical applications of the vibration protection theory for various constructions and objects.
Author: Lagaros, Nikos D. Publisher: IGI Global ISBN: 1466620307 Category : Technology & Engineering Languages : en Pages : 414
Book Description
A typical engineering task during the development of any system is, among others, to improve its performance in terms of cost and response. Improvements can be achieved either by simply using design rules based on the experience or in an automated way by using optimization methods that lead to optimum designs. Design Optimization of Active and Passive Structural Control Systems includes Earthquake Engineering and Tuned Mass Damper research topics into a volume taking advantage of the connecting link between them, which is optimization. This is a publication addressing the design optimization of active and passive control systems. This title is perfect for engineers, professionals, professors, and students alike, providing cutting edge research and applications.
Author: Matthew A. Nobile Publisher: ISBN: Category : Damping (Mechanics) Languages : en Pages : 164
Book Description
The behavior of dynamic vibration absorbers of conventional and novel design has been investigated experimentally. Transmissibility and relative displacement measurements have been obtained for absorbers attached to a one-degree-of-freedom primary system, and the resultant data have been compared with the predictions of existing theories. The absorbers tested ranged from those possessing a conventional mass-spring-dashpot configuration, to those possessing novel configurations. In all cases, the experimental results were in close agreement with theoretical predictions. The novel configurations included (1) an absorber employing a viscoelastic (Butyl rubber) material as a combined spring-and-damper element, (2) absorbers employing damped laminated beams as spring-and-damper elements, (3) so-called 'dual dynamic abosrbers' -- a conventional, viscously damped absorber in parallel with a less massive undamped absorber, and (4) a single nominally undamped absorber or a pair of nominally undamped absorbers attached to a heavily damped primary system.
Author: Kerk Cheng Kee
Author: Kerk Cheng Kee
Author: Steven F. Griffin
Author: Boris G. Korenev
Author: John B. Hunt
Author: Lagaros, Nikos D.
Author: John Raymond Burrows
Author: Matthew A. Nobile
Author: Amruthur V. Srinivasan
Author: John David Heilmann
Author: Tore Dahlberg