Evaluation of the Effect of a Step Change in Piezo Actuator Structure on Vibration Reduction Level in Plates

Wiciak, Jerzy; Trojanowski, R.

doi:10.1515/aoa-2015-0009

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…The plate model is actually the same as in [12,14] that is a steel plate (400 mm × 400 mm × 2 mm) with 2 piezo elements attached. One of these elements is a homogeneous square-based element placed near the centre of the plate with area of 1600 mm 2 and height of 1 mm used to excite vibration of the plate.…”

Section: Numerical Modelsmentioning

confidence: 99%

“…The next step was testing if the placement of the inner part of a two-part element had an effect on its effectiveness [13]. Another publication [14] expanded on numerical models and presented early results of physical experiment.…”

Section: Introductionmentioning

confidence: 99%

“…Results presented in this paper are based on models created using ANSYS software presented in [12,14] with addition of a hemisphere of air. Modelled air is used for * corresponding author; e-mail: wiciak.agh.edu.pl calculating sound pressure reduction using two criteria -minimising vibrations of the area of the plate or minimising sound pressure on a half sphere with a radius of 0.5 m.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Vibration and Acoustic Pressure Reduction Using Different Types of Piezo actuators

Wiciak

Trojanowski

2015

Acta Phys. Pol. A

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This paper presents results of numerical simulations on reduction of sound pressure radiated from a square plate using different types of piezo actuators. For this purpose a FEM model was developed using ANSYS software with said steel plate with a hemisphere of air on one side of the plate. There are two criteria by which the reduction is measured: minimising vibrations of plate area and minimising sound pressure on a half sphere surrounding the plate. Changes in the results for both the radiated sound pressure and plate vibration are discussed.

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Section: Numerical Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of Vibration and Acoustic Pressure Reduction Using Different Types of Piezo actuators

Wiciak

Trojanowski

2015

Acta Phys. Pol. A

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“…These works generally concluded that the introduced change in material properties of piezo actuators did not produce any substantial change in the levels of reduction of plates vibration. Another work presented the attempts to verify numerical results with physical experiment (Wiciak and Trojanowski, 2015b). Unfortunately, a small number of samples (they had to be custom made) and differences between said samples made the results unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

Impact of the size of the sensor part on sensor-actuator efficiency

Trojanowski¹,

Wiciak²

2020

Journal of Theoretical and Applied Mechanics

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This paper presents numerical analyses of the impact of the size of the sensor-actuator part on sensor-actuator efficiency. For that purpose, numerical models of a steel plate clamped on all sides were created with two piezoelectric actuators attached to it. One was used to excite the plate and the second (which could be either a standard actuator or a sensor-actuator, having different shapes and sensor part size) to reduce plates vibrations. Harmonic analyses were performed with the goal function being the minimum of the displacement vector sum of n nodes, where n can have different values depending on the case study.

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Archives of Acoustics

Szemela

2018

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The rigorous solution describing the sound radiation by an arbitrary surface source located at the bottom of a cylindrical open cavity embedded in a flat baffle has been obtained. The open cavities of different shapes can be found in some architectural structures as well as are components of sensors, musical instruments and vehicles. The presented formulas have been expressed in the form of infinite sums. To use them, the infinite sums have to be truncated to the finite number of terms. Therefore, in practice, the results obtain based on the proposed solution are not exact and their accuracy is determined by the truncation error. The use of presented formulas is an alternative method for the finite element method (FEM). However, taking into account that the calculation efficiency of FEM rapidly decrease when a volume of considered region increases, the obtained in this study solution can be more useful in some practical cases.The approximated formula of a high computational efficiency has been presented for the sound pressure in the far field. The sound radiation has been analyzed for a rectangular piston as a sound source. The influence of cavity depth ratio on the radiation efficiency has been investigated. The cases for which the cavity radiation efficiency can be approximately calculated from the formula valid for a baffled sound source have been determined.

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Evaluation of the Effect of a Step Change in Piezo Actuator Structure on Vibration Reduction Level in Plates

Cited by 3 publications

References 15 publications

Comparison of Vibration and Acoustic Pressure Reduction Using Different Types of Piezo actuators

Comparison of Vibration and Acoustic Pressure Reduction Using Different Types of Piezo actuators

Impact of the size of the sensor part on sensor-actuator efficiency

Archives of Acoustics

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