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Showing 1 to 20 of 40 for “"vibration absorber"”.
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Adaptive vibration absorber
Rapid changes in the drafting profession have left gaps in skills and resources which hinder the ability of community college drafting instructors to provide students with the advanced skills needed for employment. To minimize these problems and to facilitate the integration of CAD into drafting …
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Adaptive tuned vibration absorber
… and applied to a previously designed tunable vibration absorber. The adaptive vibration absorber is capable of detecting the frequency of the driving force and tuning itself automatically to that particular frequency. The primary structure was previously designed to obtain a certain natural …
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The Uniform Hanging Cable as a Translational Vibration Absorber.
The small, lateral vibrations of a system consisting of a uniform cable suspended from a mass in a gravitational field and having a lower end mass are considered in this thesis. The frequencies and modal configurations for free vibration were determined. Secondly, a harmonically varying forcing …
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The Uniformly Tapered Circular Beam as a Dynamic Vibration Absorber.
… treat in detail the lumped parameter dynamic vibration absorber. Typical examples are the translating mass vibration absorber, the pendulum vibration absorber, and the bifilar pendulum vibration absorber. The common characteristic of these single degree-of-freedom subsystems is that their …
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New design of tuned vibration absorber for wide frequency range application
Vibrations are undesirable in machines and structures because they increased stresses, energy losses, cause added wear, increase bearing loads, induce fatigue, create passenger discomfort in vehicles. Uncontrolled vibrations can leave a bad impression to the machine, structure, and human. Vibration …
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Vibration control using an adaptive tuned magneto-rheological fluid vibration absorber
An adaptive tuned vibration absorber (ATVA) can be used to suppress unwanted vibrations. If the excitation frequency is time harmonic but the frequency changes with time,it is desirable to retune the ATVA so that the natural frequency of the ATVA always coincides with the excitation frequency. One …
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A dual reaction-mass dynamic vibration absorber for active vibration control
Traditional dynamic vibration absorbers (DVAs) consist of a mass-spring-damper system and are an effective means of attenuating structural vibration over a narrow frequency band. The effective bandwidth of the DVA can be increased by the addition of an externally controlled force, generally applied …
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Optimal suspension damping and axle vibration absorber for reduction of dynamic tire loads
… the road damage, are strongly related to vibration modes of the vehicle associated with vertical and pitch motions of the sprung and unsprung masses. The high levels of tire induced road damage caused by heavy vehicles has prompted a growing demand for the design of road-friendly vehicles. …
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A Distributed Active Vibration Absorber (DAVA) for Active-Passive Vibration and Sound Radiation Control
… treatment developed to reduce structural vibrations and their associated radiated sound. It is a contribution to the research of efficient and low cost devices that implement the advantages of active and passive noise control techniques. A theoretical model has been developed to …
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A multi-frequency induction heating system for a thermally triggered gel polymer dynamic vibration absorber
… early part of the twentieth century, the dynamic vibration absorber (DVA) has played an important role in vibration suppression. In its simplest form, a dynamic vibration absorber is a mechanical network consisting of a spring, a mass and sometimes a damping element. These networks have been used …
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Analysis of a Nonlinear vibration absorber for vibration control in a hand-held impact machine
… approximately 20% of operators risk developing vibration-related hand injuries, which can be career-ending. As a step toward improving the safety of these tools, this dissertation focuses on modeling their dynamic behavior to evaluate the effectiveness of vibration control strategies. The …
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Performance of Nonlinear Mechanical, Resonant-Shunted Piezoelectric, and Electronic Vibration Absorbers for Multi-Degree-of-Freedom Structures
Linear vibration absorbers are a valuable tool used to suppress vibrations due to harmonic excitation in structural systems. Limited evaluation of the performance of nonlinear vibration absorbers for nonlinear structures exists in the current literature. The state of the art is extended in this …
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Vibration simulation of a simply-supported beam with attached multiple absorbers
In general, the standard solutions to reduce the vibration and noise problems are to redesign and modify the system such as adding the thickness of wall panels, enhancing the elasticity of the structure and increase the damping mechanism of the structure. In this study, the concept of dynamic …
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Vibration analysis of a beam structure attached with two dynamic vibration absorbers
… load primarily in flexure that may experience vibration as it does carry vertical loads and gravitational forces. Its exposure to vibration can lead to excessive deflections and failure of to the structure. The aim of this research is to develop the application of dynamic vibration absorber on …
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Alternative design optimization formulations – developing and comparing for a vibration damping example
… solutions can be evaluated and compared. Using a vibration absorber design example, the guidelines are enumerated, explained, and used to compose six alternative optimization formulations of the problem. These alternatives formulations vary in objective functions, decision variables, and some …
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Multi-Degree of Freedom Passive and Active Vibration Absorbers for the Control of Structural Vibration
… of freedom (MDOF) passive and active vibration absorbers for the control of structural vibration as an improvement to conventional single degree of freedom (SDOF) vibration absorbers. An analytical model is first used to compare passive two degree of freedom (2DOF) absorbers to SDOF …
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A Time-Domain Numerical Study of Passive and Active Anti-Roll Tanks to Reduce Ship Motions
… used for the active tank (pump) systems and a vibration absorber was used for the passive tank systems. A single-degree-of-freedom non-linear code was developed to investigate the influence of various coefficients and control strategies. The final active and passive tank system implementations …
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Effect of sound radiation from plate attached with absober
… have potential to contribute to substantial vibration and sound radiation, which lead to excessive noise. So, the study was carried out by determine the sound pressure radiated from simply support plate (SSP) without absorber and compared with attached single absorber in term of vibration …
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Vibration suppression in finite length marine cable systems
The vibration suppression effectiveness of a flexible in-line marine cable vibration absorber is studied. The transfer matrix method is used to build various numerical models of vibration absorbers in marine cable systems. The models determine cable system natural frequencies, mode shapes and modal …
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