Design of an Adaptive Vibration Absorber to Reduce Electrical Transformer Structural Vibration

Hill, Simon G.; Snyder, Scott D.

doi:10.1115/1.1500338

Cited by 29 publications

(18 citation statements)

References 10 publications

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“…However, one of drawback of DVAs is the lacking adaptability due to narrow frequency bandwidth. Number of development have been conducted to overcome the disadvantages such as controlling the pressure of air springs [ 132 ], altering effective coil number of spring [ 133 ], changing the length of threaded flexible rods [ 134 ], and minimizing the space between two spring leaves [ 135 ]. It is viable to adjust the frequency, the challenges are heavy weight, slow adjusting speed, large dimensions and high energy consumption.…”

Section: Applications Of Mresmentioning

confidence: 99%

Magnetorheological Elastomers: Fabrication, Characteristics, and Applications

et al. 2020

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Magnetorheological (MR) elastomers become one of the most powerful smart and advanced materials that can be tuned reversibly, finely, and quickly in terms of their mechanical and viscoelastic properties by an input magnetic field. They are composite materials in which magnetizable particles are dispersed in solid base elastomers. Their distinctive behaviors are relying on the type and size of dispersed magnetic particles, the type of elastomer matrix, and the type of non-magnetic fillers such as plasticizer, carbon black, and crosslink agent. With these controllable characteristics, they can be applied to various applications such as vibration absorber, isolator, magnetoresistor, and electromagnetic wave absorption. This review provides a summary of the fabrication, properties, and applications of MR elastomers made of various elastomeric materials.

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Section: Applications Of Mresmentioning

confidence: 99%

Magnetorheological Elastomers: Fabrication, Characteristics, and Applications

et al. 2020

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“…The conclusion for dual-DVA design is as simple as tuning each DVA to a frequency wanted to be absorbed. Hill and Snyder [12] designed a dual mass absorber to suppress the vibration at multiple frequencies, which consisted of two rods (smooth and threaded) supporting two equal masses (bells) on both sides. This device was able to tune the first six natural frequencies, mixed in bending and torsion modes.…”

Section: Introductionmentioning

confidence: 99%

A New Design of Vibration Absorber for Periodic Excitation

Huang

Lin²

2014

Shock and Vibration

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The authors designed a novel type of dynamic vibration absorber, called periodic vibration absorber (PVA), for mechanical systems subjected to periodic excitation. Since the periodic rather than single harmonic excitation is themost occurring case in mechanical systems, the design of PVA is hence of engineering significance. The PVA designed in this paper is composed of a dual-beam interconnected with a discrete spring in between. By appropriately choosing the design parameters, the PVA can be of resonance frequencies in integer multiples of the base frequency such that the PVA can absorb significant amount of higher harmonics in addition to the base harmonic. The designed PVA was first experimentally verified for its resonance frequencies. The PVA implemented onto a mechanical system was then tested for its absorption ability. From both tests, satisfying agreement between experiments and numerical calculations has been obtained. The sensitivities of the design variables, such as the discrete spring’s stiffness and location, were discussed as well. The parameters’ sensitivities provided us with the PVA’s adjustable room for excitation frequency’s mismatch. Numerical results showed that within 3% of frequency mismatch, the PVA still performed better than a single DVA via adjusting the spring’s constant and location. All the results proved that the novel type of PVA could be a very effective device for vibration reduction of mechanical systems subjected to periodic excitation.

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“…SCLD design consists of viscoelastic shear layer sandwiched between two layers of piezoelectric sensors and actuator, and this composite bonded to a vibrating structure acts as a smart treatment. Hill and Snyder [7] have described the design of vibration absorber (dual mass vibration absorber) using FEA in ANSYS software to reduce structural vibrations at multiple frequencies with enlarged bandwidth. They have carried out experiments to control vibrations of panel having all sides' clamped boundary conditions and simply supported beam.…”

Section: Introductionmentioning

confidence: 99%

Study of Magnetic Vibration Absorber with Permanent Magnets along Vibrating Beam Structure

Sayyad¹,

Gadhave²

2013

Journal of Structures

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The vibration absorbers are frequently used to control and minimize excess vibration in structural system. Dynamic vibration absorbers are used to reduce the undesirable vibration in many applications such as pumps, gas turbines, engine, bridge, and electrical generator. To reduce the vibration of the system, the frequency of absorber should be equal to the excitation frequency. The aim of this study is to investigate the effect of magnetic vibration absorber along vibrating cantilever beam. This study will aim to develop a position of magnetic vibration absorber along the cantilever beam to adopt the change in vibratory system. The absorber system is mounted on a cantilever beam acting as the primary system. The objective is to suppress the vibration of the primary system subjected to a harmonic excitation whose frequencies are varying. It can be achieved by varying the position of magnetic vibration absorber along the length of beam. The advantage of magnetic vibration absorber is that it can be easily tuned to the excitation frequency, so it can be used to reduce the vibration of system subjected to variable excitation frequency.

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Design of an Adaptive Vibration Absorber to Reduce Electrical Transformer Structural Vibration

Cited by 29 publications

References 10 publications

Magnetorheological Elastomers: Fabrication, Characteristics, and Applications

Magnetorheological Elastomers: Fabrication, Characteristics, and Applications

A New Design of Vibration Absorber for Periodic Excitation

Study of Magnetic Vibration Absorber with Permanent Magnets along Vibrating Beam Structure

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