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Dynamic Vibration Absorber

About: Dynamic Vibration Absorber is a research topic. Over the lifetime, 4764 publications have been published within this topic receiving 49429 citations.


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Journal ArticleDOI
TL;DR: In this paper, a sealed liquid column damper (TLCD) is used to counteract steady-state vibrations in a base-isolated building with a TLCD in the basement.
Abstract: Sealed liquid column damper (TLCD) are tuned in the low-frequency range of application (say below 5 Hz) with respect to a selected natural frequency of the main structure by means of a geometrical transformation in analogy to the classical tuned mass damper (TMD). To improve the performance in MDOF buildings even further, the influence of neighboring modes is taken into account by fine-tuning in state space, rendering the optimal parameters modified. Final adjustments are easily made in the course of in situ testing. The passive sealed TLCD making use of the gas-spring effect and, since turbulent damping of assigned strength is present, is perfectly suited to counteract steady-state vibrations. Reduction of transient vibration peaks, observed within the initial period of the strong motion phase of earthquakes, requires active control, realized by controlled pressure input into the gas volume. The TLCD is commonly sufficiently damped and the vertical component of the seismic excitation does not cause parametric resonance. A sufficient condition based on the cut-off damping must be checked. Computer simulations and small scale experimental testing under time-harmonic-, single seismogram- and random- forcing confirmed the excellent performance and robustness of the TLCD. Optimal solutions for benchmark MDOF structures with multiple TLCD are presented when excited either by wind gusts or by earthquakes. A base-isolated structure is considered with the effective damping supplied by a TLCD in the basement. Copyright © 2005 John Wiley & Sons, Ltd.

78 citations

Journal ArticleDOI
TL;DR: A novel semiactive-inerter-based adaptive tuned vibration absorber (SIATVA) that can be applied to a variety of primary systems without resetting the parameters and can also tolerate the parameter variation of the primary system.
Abstract: This brief presents a novel framework to realize the semiactive inerter, and proposes a novel semiactive-inerter-based adaptive tuned vibration absorber (SIATVA). The proposed semiactive inerter can be realized by replacing the fixed-inertia flywheel in the existing flywheel-based inerters with a controllable-inertia flywheel. Then, by using the proposed semiactive inerter, an SIATVA is constructed, and two control methods, that is, the frequency-tracker-based (FT) control and the phase-detector-based (PD) control, are derived. The experimental results show that both the FT control and the PD control can effectively neutralize the vibration of the primary mass, although the excitation frequency may vary. The proposed SIATVA can also tolerate the parameter variation of the primary system. As a result, it can be applied to a variety of primary systems without resetting the parameters. The performance degradation by the inherent damping is also demonstrated.

78 citations

Journal ArticleDOI
TL;DR: In this paper, a common format is developed for a mass and an inerter-based resonant vibration absorber device, operating on the absolute motion and the relative motion at the location of the device, respectively.
Abstract: A common format is developed for a mass and an inerter-based resonant vibration absorber device, operating on the absolute motion and the relative motion at the location of the device, respectively. When using a resonant absorber a specific mode is targeted, but in the calibration of the device it may be important to include the effect of other non-resonant modes. The classic concept of a quasi-static correction term is here generalized to a quasi-dynamic correction with a background inertia term as well as a flexibility term. An explicit design procedure is developed, in which the background effects are included via a flexibility and an inertia coefficient, accounting for the effect of the non-resonant modes. The design procedure starts from a selected level of dynamic amplification and then determines the device parameters for an equivalent dynamic system, in which the background flexibility and inertia effects are introduced subsequently. The inclusion of background effect of the non-resonant modes leads to larger mass, stiffness and damping parameter of the device. Examples illustrate the relation between resonant absorbers based on a tuned mass or a tuned inerter element, and demonstrate the ability to attain balanced calibration of resonant absorbers also for higher modes.

76 citations

Journal ArticleDOI
TL;DR: In this paper, the use of multiple Delayed Resonators (DRs) in suppressing tonal vibrations of multi-degree-of-freedom mechanical structures is discussed, and a strategy called stability charts is used not only to resolve the stability but also to find out the tuning speed of the absorption.

76 citations

Journal ArticleDOI
TL;DR: In this article, an application of the Chebyshev's criterion to the optimal design of the damped dynamic vibration absorber is presented, and the results are summarized in ready-to-use computational graphs.

76 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202347
2022120
2021134
2020162
2019215
2018206