Control of Fan Blade Vibrations Using Piezoelectrics and Bi-Directional Telemetry

Provenza, Andrew J.; Morrison, Carlos R.

doi:10.1115/gt2011-46714

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…Future works will focus on the implementation of the model in cases of rotating cantilever beams. The interest in these studies could be, e.g., the damping of the blade vibrations in turbomachinery [25][26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Optimal Piezoelectric Potential Distribution for Controlling Multimode Vibrations

2018

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Vibration damping is prominent in engineering; in fact, vibrations are related to many phenomena (e.g., the fatigue of structural elements). The advent of smart materials has significantly increased the number of available solutions in this field. Among smart materials, piezoelectric materials are most promising. However, their efficiency depends on their placement. There are many studies on their optimal placement for damping a particular mode, but few account for multimodal vibrations damping. In a previous work, an analytical method was proposed to find the optimal placement of piezoelectric plates to control the multimode vibrations of a cantilever beam. In this study, the efficiency of the above method has been improved, considering all plates active simultaneously, regardless of the eigenmodes that are excited, and changing, instead of the plates, the potential distribution. The method results indicate the optimal potential distribution for different excited eigenmodes. The results have been compared with those obtained by experimental tests and numerical simulations, exhibiting very good agreement.

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Section: Discussionmentioning

confidence: 99%

Optimal Piezoelectric Potential Distribution for Controlling Multimode Vibrations

2018

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“…They propose a new controllability index and illustrated various beam examples with a pair of collocated piezoelectric actuators. More recently, studies about their use in blades of turbomachinery have been carried out; however, only few of these concern active damping [20][21][22][23]. Unfortunately in many real cases the loads applied to the structure excite more than one mode, with different amplitudes, and the excited modes can change during service.…”

Section: Advances In Acoustics and Vibrationmentioning

confidence: 99%

Optimal Placement of Piezoelectric Plates to Control Multimode Vibrations of a Beam

Botta

Dini

Schwingshackl

et al. 2013

Advances in Acoustics and Vibration

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Damping of vibrations is often required to improve both the performance and the integrity of engineering structures, for example, gas turbine blades. In this paper, we explore the possibility of using piezoelectric plates to control the multimode vibrations of a cantilever beam. To develop an effective control strategy and optimize the placement of the active piezoelectric elements in terms of vibrations amplitude reduction, a procedure has been developed and a new analytical solution has been proposed. The results obtained have been corroborated by comparison with the results from a multiphysics finite elements package (COMSOL), results available in the literature, and experimental investigations carried out by the authors.

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“…However, piezoceramics have been implemented in several applications such as: energy harvesting [6], micro-actuators for subspace aircraft [9], wings actuation in drones [10], vibration damping in cantilever beam under support motion [11], turbomachinery blades vibration [12][13][14][15], axial compressor vibration damping [16], rotating plates vibration control [17], and active fan blades vibration [18,19].…”

Section: Introductionmentioning

confidence: 99%

Optimal Voltage Distribution on PZT Actuator Pairs for Vibration Damping in Beams with Different Boundary Conditions

Rossi

Botta

2023

Actuators

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In recent decades, many studies have been conducted on the use of smart materials in order to dampen and control vibrations. Lead zirconate titanate piezoceramics (PZT) are very attractive for such applications due to their ability of delivering high energy strain in the structure. A pair of piezoelectric actuators can actively dampen the resonances of the structure, but the damping effectiveness strongly relies on its location. Damping effectiveness can be substantially increased if the structure is fully covered with PZT actuator pairs and the voltage distribution on each pair is optimized. In this way, each actuator pair contributes to the vibration attenuation and only the driving voltage’s sign, distributed on each actuator pair, needs to be identified for each resonance. This approach is here applied to the case of Euler–Bernoulli beams with constant cross-section and the optimal voltage distribution is investigated for several boundary conditions. The theoretical model results were corroborated with finite element simulations, which were carried out considering beams covered by ten PZT actuator pairs. The numerical results agree remarkably well with the theoretical predictions for each examined case (i.e., free-free, pinned-pinned, and fixed-fixed).

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Control of Fan Blade Vibrations Using Piezoelectrics and Bi-Directional Telemetry

Cited by 4 publications

References 9 publications

Optimal Piezoelectric Potential Distribution for Controlling Multimode Vibrations

Optimal Piezoelectric Potential Distribution for Controlling Multimode Vibrations

Optimal Placement of Piezoelectric Plates to Control Multimode Vibrations of a Beam

Optimal Voltage Distribution on PZT Actuator Pairs for Vibration Damping in Beams with Different Boundary Conditions

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