Vibration control by attaching masses to a plate excited by rotating machinery

Curadelli, Oscar; Danesi, Rodolfo

doi:10.1016/j.jsv.2003.08.032

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…A transverse excitation force of frequency range from 120 to 1120 Hz is applied at a location at x ¼ 20 mm and y ¼ 20 mm from the center of the plate and away from the symmetry lines to avoid nodal lines. The displacements at¯ve di®erent locations (1)(2)(3)(4)(5), along the center line of the plate were measured on bare plate and plate-°ap assembly, and are presented as frequency response curves.…”

Section: Experimental Testsmentioning

confidence: 99%

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Influence of Aspect Ratio of Vibratory Flap on Dynamic Response of Clamped Rectangular Plate

Mahadevaswamy¹,

Suresh²

2015

Int. J. Str. Stab. Dyn.

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The transverse vibration control of a clamped, rectangular, isotropic plate by a vibratory°ap subjected to harmonic excitation has been investigated by Finite Element Analysis (FEA) and experimental technique. The vibratory°ap is a new plate-type dynamic vibration absorber, which can vibrate on the plate when attached as a cantilever plate. The study has been focused speci¯cally on the in°uence of aspect ratio of vibratory°ap on the dynamic response of the plate at constant mass ratio and constant tuning frequency ratio. The study has revealed that the dynamic response of the plate varies with respect to the aspect ratio for aforementioned conditions. An optimum aspect ratio has also been obtained by minimizing the mass ratio with maximum attenuation in the¯rst and second target frequencies. The results have shown that the optimized°ap can trim down the plate vibrations by up to 90-95% in the fundamental mode. Moreover, the dynamic response of the plate can be improved to a great extent due to the adoption of an optimal aspect ratio of the°ap. Finally, the experimental outcomes have shown fairly good agreement with the results obtained from the¯nite element analysis.

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Section: Experimental Testsmentioning

confidence: 99%

“…2 The e®ect of mass ratio and location of the point mass was studied by Yu 3 to obtain an analytical solution for free and forced vibrations of square and rectangular cantilever plates. Curadelli et al 4 presented the numerical and experimental study vibration of plate to determine the e±ciency of the attached masses.…”

Section: Introductionmentioning

confidence: 99%

Influence of Aspect Ratio of Vibratory Flap on Dynamic Response of Clamped Rectangular Plate

Mahadevaswamy¹,

Suresh²

2015

Int. J. Str. Stab. Dyn.

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“…In turn, detuning has many possibilities, for example, increasing the natural frequency of the vibrating system, lowering its natural frequency, adding extra degrees of freedom (DOFs), in such a way as to separate the new natural frequencies from that of the excitation. The second can be done in different ways: adding actual mass, adding apparent mass by using inerters, softening the structure, and (probably the most popular) isolating the structure by incorporating discrete flexibility.…”

Section: Introductionmentioning

confidence: 99%

Resettable‐inertance inerter: A semiactive control device for energy absorption

Garrido

Curadelli

2019

Struct Control Health Monit

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Semiactive control systems are based on formerly passive mechanical devices whose characteristics are adjusted in real time by active means. They can be classified into variable-damping dampers, variable-stiffness springs, and variable-inertance inerters. Similarly to the case of "variable-stiffness," two possibilities are devised for inerters: "independently-variable inertance," where inertance can increase or decrease continuously at any instant of time, and "resettable-inertance," where it can increase only at instants where relative velocity is zero. By duality with resettable-stiffness springs, a resettable-inertance inerter (RII) is composed of an inerter that can suddenly be disconnected from the vibrating system and blocked in order to eliminate kinetic energy. Studies on "independently-variable inertance" have been carried out recently, but there are still no studies on "resettable inertance." This paper presents an analytical numerical study on RII, for an energy-based control law, through the mathematical model of a mechanical implementation. By simulation of a numerical example that considers a SDOF system with three different devices, the performance is demonstrated for energy absorption and vibration reduction. Moreover, closed-form expressions for the equivalent-linear inertance, stiffness, and damping are found for the resettable devices and validated through the numerical example. Main conclusion is that RII adds equivalent damping without dynamically stiffening the structure. Besides, the absorbed energy can be dissipated and/or harvested in time intervals in which the RII is uncoupled from the structure.

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Transverse vibration of spinning disk with attached distributed patch and discrete point masses using finite element analysis

Ranjan¹,

Ghosh²

2010

Int. J. Eng. Sci. Tech

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Free and forced transverse vibration characteristics of a thin spinning disc attached to a rigid core have been investigated by finite element analysis using ANSYS software. The effect of discrete point masses and patches of distributed masses attached at the periphery of the plate on free and forced vibration behavior of a spinning disc has been investigated. Discrete point masses and distributed patch masses have been placed at higher strain regions to look into its influence on the natural frequencies, mode shapes and response of the plate to external excitation. Results for eight and sixteen point masses and patches on the vibration characteristics have been compared. It has been observed that discrete patches and point masses have significant influence on the modal frequencies and these can also act as dynamic vibration absorbers in reducing vibration of a spinning disc. It has also been shown that discrete patches of piezoelectric patches can also be used to actively control vibration of the spinning disc.

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Vibration control by attaching masses to a plate excited by rotating machinery

Cited by 3 publications

References 13 publications

Influence of Aspect Ratio of Vibratory Flap on Dynamic Response of Clamped Rectangular Plate

Influence of Aspect Ratio of Vibratory Flap on Dynamic Response of Clamped Rectangular Plate

Resettable‐inertance inerter: A semiactive control device for energy absorption

Transverse vibration of spinning disk with attached distributed patch and discrete point masses using finite element analysis

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