Active coupling enhancement of piezoelectric networks for vibration delocalization of nearly periodic structures

Zhang, Jianhua; Wang, Kon Well; Yu, Hongbiao

doi:10.1117/12.483441

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…Many methods are used to reduce forced response localization. One of the methods is using piezoelectric networking to reduce vibration localization (Zhang et al, 2003;Tang and Wang, 2003;Yu et al, 2006). Previous studies show that intentional mistuning patterns can be used to reduce the vibration localization of bladed disks.…”

Section: Resultsmentioning

confidence: 99%

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Kan

Xing

2022

Mech. Sci.

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Abstract. Bladed disk systems with advanced functions are widely used in turbo-machineries. However, there are always deviations in physical dynamic properties between blades and blades due to the tolerance and wear in operation. The deviations will lead to vibration localization, which will result in high cycle fatigue and accelerate the damage of the bladed disk system. Therefore, many intentional mistuning patterns are proposed to overcome this larger local vibration. Previous studies show that intentional mistuning patterns can be used to reduce the vibration localization of the bladed disk. However, the determination of the resonance mechanism of the intentional mistuning bladed disk system is still an unsolved issue. In this paper, a novel mathematical model of resonance of an intentional mistuning bladed disk system is established. Mistuning of blades and energy resonance are included in this theoretical model. The method of the mechanical power of the rotating blade for one cycle is applied to obtain the resonance condition. By using this theoretical model, the resonance mechanism of an intentional mistuning bladed disk is demonstrated. The results suggest that the ideal results can be obtained by adjusting the intentional mistuning parameter. This paper will guide the design of the dynamic characteristics of the intentional mistuning bladed disk.

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Section: Resultsmentioning

confidence: 99%

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Kan

Xing

2022

Mech. Sci.

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“…To calculate the strain-induced voltage using the method presented above, an accurate characterization of the patch impedance is necessary. Many previous applications of piezoelectric shunt control utilize the electrical model shown in Figure 7(a) for a piezoelectric patch, which includes a strain-induced voltage, V o , and the piezoelectric impedance modeled as a capacitor (Behrens et al, 2002(Behrens et al, , 2003bHagood and Von Flotow, 1991;Moheimani et al, 2003;Zhang et al, 2003). However, this model does not sufficiently represent the patch impedance when the real part of the patch impedance is on the same order of magnitude as the imaginary part of the patch impedance; a modified electrical model for the patch must be then used to accurately describe the frequency response of the patch.…”

Section: Piezoelectric Patch Impedance Modelmentioning

confidence: 99%

Response-based tuning of a negative capacitance shunt for vibration control

Beck

Cunefare

Collet

2013

Journal of Intelligent Material Systems and Structures

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The control of vibrating structures using piezoelectric elements attached to simple control circuits, known as shunts, is a widely studied field. Many different shunt circuits have been researched that have been shown to obtain effective performance in both narrow and broadband frequency ranges. Yet, the choice for the exact parameters of the circuit elements for these vibration-suppressing shunts can be found by various methods. In this study, a new method of selecting the circuit parameters of a negative capacitance shunt is presented. The method predicts the magnitude of the strain-induced voltage caused by the vibrating substrate computed from a single voltage measurement. Therefore, minimizing the strain-induced voltage will mean that the deflection of the structure is also minimized. The tuning theory is confirmed experimentally, which validates that it is possible to experimentally obtain the shunt parameters that produce maximum control through measurement of the shunt response. The suppression ability of the shunt is also compared to the maximum power dissipated. It is found that at high frequency, the parameters that cause maximum power dissipated obtain maximum suppression, but there is no correlation between maximum power dissipated and maximum suppression at low frequency.

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“…Both Vaillon 27 and Bronowicki 28 performed vibration reduction tests on large space truss structures. And because of the interest in turbine blade vibration reduction, bladed disks have been a common test structure [29][30][31] . Other complex structures include a ring structure 32 , hybrid panels 33 and negative capacitance shunts applied to a large thermoplastic fairing 4 .…”

Section: Introductionmentioning

confidence: 99%

Active vibration control of a stiffened panel through application of negative capacitance shunts

et al. 2011

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Shunted piezoelectric patches form an effective control mechanism for reducing vibrations of a mechanical system. One type of shunt, a negative capacitance circuit, is capable of suppressing vibration amplitude over a broad frequency range. Most previous work has focused on control of simple test structures such as beams and plates. This work studies the performance of the negative capacitance shunt connected to piezoelectric patches attached to a stiffened aircraft panel. The placement of the piezoelectric transducers is determined using a simplified finite element model of one bay of the panel. The numerical predictions are compared to experimental results for spatial average vibration for a point force input. The amount of control for increasing number of patches is also investigated. These results give a more accurate representation of the achievable performance in real world application.

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Active coupling enhancement of piezoelectric networks for vibration delocalization of nearly periodic structures

Cited by 4 publications

References 20 publications

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Response-based tuning of a negative capacitance shunt for vibration control

Active vibration control of a stiffened panel through application of negative capacitance shunts

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