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Journal articles on the topic 'Patchy vibration'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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1

Cao, Huong, Mahmoud Karimi, Paul Williams, and Paul Dylejko. "Vibration control of a cantilever plate immersed in water using shunted piezoelectric patches." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A55. http://dx.doi.org/10.1121/10.0022778.

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Minimizing structural vibrations is an important engineering requirement in many applications. This study theoretically investigates the vibration control of an in-water cantilever plate using piezoelectric patches and resonant shunt circuits (including a resistance R and an inductance L in series or parallel). To do this, an analytical model for predicting the point-forced vibration response of a fluid-loaded cantilever plate with two piezoelectric patches is developed. The electromechanical coupling factor and optimum values for R and L are then estimated by considering the dynamics of the s

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2

Lindsay, A. E., W. Hao, and A. J. Sommese. "Vibrations of thin plates with small clamped patches." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 471, no. 2184 (2015): 20150474. http://dx.doi.org/10.1098/rspa.2015.0474.

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Eigenvalues of fourth-order elliptic operators feature prominently in stability analysis of elastic structures. This paper considers out-of-plane modes of vibration of a thin elastic plate perforated by a collection of small clamped patches. As the radius of each patch shrinks to zero, a point constraint eigenvalue problem is derived in which each patch is replaced by a homogeneous Dirichlet condition at its centre. The limiting problem is consequently not the eigenvalue problem with no patches, but a new type of spectral problem. The discrepancy between the eigenvalues of the patch-free and p

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3

Zhang, J., J. C. Bruch, and J. M. Sloss. "An Integral Equation Approach for Shape Optimization of Plate Piezoelectric Patch." Journal of Vibration and Control 11, no. 2 (2005): 161–86. http://dx.doi.org/10.1177/1077546305047026.

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In this paper, we consider a vibrating system with piezoelectric patches whose minimum vibration frequency is to be maximized subject to some constraint on the patch geometry. A numerical scheme is constructed based on the integral equation approach for the computation of the corresponding eigenvalue problem and the boundary parametrization optimization technique. Various numerical results are provided for the case of a Plexiglas plate with PVDF sensor and actuator patches.

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4

Bhatti, J. S., and R. A. Pasha. "Finite Element Based Design of Piezoelectric Vibration Damper." Key Engineering Materials 442 (June 2010): 431–37. http://dx.doi.org/10.4028/www.scientific.net/kem.442.431.

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Vibration control using combination of piezoelectric material and electrical circuits can remove the vibration energy from the host structure. The need for passive damping techniques arises to avoid the complexities and energy requirements associated with other vibration control techniques. Passive damping technique for reduction of vibration of structures by introduction of shunted piezoelectric patch is presented in this study. Finite element analysis is performed for a cantilever beam with shunted piezoelectric patch on it. The prediction of the model is validated against experimental publi

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Kropp, Wolfgang, Krister Larsson, Thiago Lobato, and Roland Sottek. "Application of the LMS algorithm to identify the surface velocity responsible for the radiated sound pressure." Acta Acustica 5 (2021): 32. http://dx.doi.org/10.1051/aacus/2021023.

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A time domain approach based on the least mean square (LMS) algorithm is applied to reconstruct the source amplitude and source distribution on a plate. For this a numerical experiment is established. A boundary element model is used to calculate the required impulse response functions describing the pressure in near- and far-field for a given volume flow at individual patches on the plate. Three different cases are considered. Firstly, a volume flow is given to a single patch. The LMS algorithm is used to reconstruct the source signal by means of receiving positions in the far-field. Secondly

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6

Basa, B., and Saroj K. Sarangi. "Vibration Control of Sandwich Plates." Applied Mechanics and Materials 612 (August 2014): 1–7. http://dx.doi.org/10.4028/www.scientific.net/amm.612.1.

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This paper presents the active control of vibrations of sandwich plates using piezoelectric composites (PZC). The top surface of the plate is integrated with the patches of active constrained layer damping treatment. Active fiber composite, one of the commercially available PZCs, is used as the material of the constraining layer of the patches and the constrained layer of the patch is composed of a viscoelastic material. Considering the ﬁrst order shear deformation theory individually for each layer of the sandwich plate, a three-dimensional finite element model has been developed. The perform

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7

Brahem, Maryam, Mnaouar Chouchane, and Amira Amamou. "Active vibration control of a rotor bearing system using flexible piezoelectric patch actuators." Journal of Intelligent Material Systems and Structures 31, no. 10 (2020): 1284–97. http://dx.doi.org/10.1177/1045389x20916804.

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Rotor vibration control is crucial for the reliability of rotating machines. This article applies active vibration control to reduce the vibration of a rotor bearing system using flexible piezoelectric patches as actuators mounted on the shaft external surface. The patches reduce the vibration due to unbalance forces by generating bending moments to counteract rotor deformation. An active vibration control system is designed based on a full-state linear quadratic regulator controller. Since proximity probes are used to measure the lateral vibrations of the rotor at few shaft positions, an obse

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8

Li, Ming, and Hui Ming Zheng. "Damping Characteristics of a Cantilever Plate Using Permanent Magnetic Constrained Layer Damping Strip Treatment." Advanced Materials Research 450-451 (January 2012): 466–71. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.466.

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Significant improvement of damping characteristics can be achieved by using the new class of magnetic constrained layer damping treatment (MCLD). This paper presents the damping properties of the first and second torsional mode for a five-layer cantilever rectangular plate treated with partial MCLD. The Rayleigh-Ritz method and Hamilton’s principle are employed in the analysis. We have chosen both single and segmented patches with different sizes. It can be observed that for the two modes single-patched MCLD treatment induces less improvement of damping characteristics especially for the short

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9

Zhang, Ting, and Hongguang Li. "Adaptive modal vibration control for smart flexible beam with two piezoelectric actuators by multivariable self-tuning control." Journal of Vibration and Control 26, no. 7-8 (2020): 490–504. http://dx.doi.org/10.1177/1077546319889842.

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It has been popular for decades that the vibrations of space structures are suppressed with smart actuators. However, the higher mode vibrations are often motivated when a control strategy is applied to attenuate the vibration for the smart structures. Moreover, if the multi-mode vibration of a smart structure is suppressed with multi-actuators, a proper multivariable control law will be adopted to solve the coupling problem caused by the multi-actuators of the smart structure. Therefore, in the paper, a decoupling technique for two modal vibrations of a smart flexible beam with two piezoelect

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10

Cheng, C. C., and P. W. Wang. "Applications of the Impedance Method on Multiple Piezoelectric Actuators Driven Structures." Journal of Vibration and Acoustics 123, no. 2 (2000): 262–68. http://dx.doi.org/10.1115/1.1362322.

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An impedance-based system modeling technique has been developed to determine the output forces of multiple piezoelectric (PZT) patch actuators on an active structure to produce a known vibration response. In the analysis of the dynamic response of a structure driven by multiple PZT patches, the proposed model includes not only the dynamic interactions between the PZT patch and the host structure but also the impedance couplings among PZT patches. Therefore this approach can apply to a structure with multiple PZT actuators. Furthermore, the bending stiffness and the thickness of a PZT patch tha

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11

Rezaeepazhand, Jalil, and H. Sabori. "Effect of Partial Debonding on Response of Perforated Plates Repaired with Square Composite Patches." Key Engineering Materials 417-418 (October 2009): 701–4. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.701.

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The performance of perforated metallic plates repaired with laminated composite patches is presented in this study. A square aluminum plate with a central circular cutout is considered as a damaged structural element. Numerical studies using commercial finite element code were conducted to investigate the effects of variation in laminate parameters such as number of plies, fiber orientation, and stacking sequences on free vibration responses of the repaired plates. Particular emphasis is placed on the effect of imperfect bonding (patch debonding). A quantitative measure for the effectiveness o

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12

Koo, Kyung-Rae, Hyun-Guk Kim, Dong-Geon Kim, Seong-Cheol Kwon, and Hyun-Ung Oh. "Lightweight Design for Active Small SAR S-STEP Satellite Using Multilayered High-Damping Carbon Fiber-Reinforced Plastic Patch." Aerospace 10, no. 9 (2023): 774. http://dx.doi.org/10.3390/aerospace10090774.

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In the launch environment, satellites are subjected to severe dynamic loads. These dynamic loads in the launch environment can lead to the malfunction of the payload, or to mission failure. In order to improve the structural stability of satellites and enable the reliable execution of space missions, it is necessary to have a reinforcement structure that reduces structural vibrations. However, for active small SAR satellites, the mass requirements are very strict, and this makes it difficult to apply an additional structure for vibration reduction. Therefore, we have developed a carbon fiber-r

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13

Hong, Dongwoo, Kyeongnak Lee, and Byeongil Kim. "Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure." Shock and Vibration 2024 (February 26, 2024): 1–14. http://dx.doi.org/10.1155/2024/8891523.

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When the thickness of a structure is reduced to decrease weight, it may experience structural vibration and disturbance. The use of passive patches is effective in addressing this issue when the loss factor is small or when space and weight are restricted. The greatest attenuation occurs when passive patches are used across the entire coverage area. However, passive patches of reasonable size must be affixed to ensure that they are effective in terms of cost and design. In this paper, the sum of squares’ value for the bending mode shape is used to determine the location of a small passive patc

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14

Acar, Mustafa Kemal, and Peyman Lahe Motlagh. "Piezoelectric patch-based metamaterial on thin plates with arrays of separately shunted patches-validation and optimization." Engineering Solid Mechanics 13, no. 2 (2025): 165–74. https://doi.org/10.5267/j.esm.2025.1.003.

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Lightweight structures tend to be susceptible to vibration, which can lead to fatigue and failure. Piezoelectric shunt damping is an efficient technology that converts mechanical energy into electrical energy and dissipates it through shunt circuits without requiring external power. This study models several piezoelectric patches coupled to different shunt circuits on a thin plate, utilizing Rayleigh-Ritz modal analysis to examine patch parameters including size, position, and distribution. Optimization demonstrates that effective patch-circuit topologies correspond with structural mode shapes

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15

Rimašauskienė, Rūta, Ali Raza, and Swarup MAHATO. "Actuation Performance of Macro Fibre Composite (MFC) as Actuator in Vibration Reduction of Cantilever Beams." Mechanics 29, no. 1 (2023): 42–50. http://dx.doi.org/10.5755/j02.mech.31732.

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This study proposes a vibration suppression technique that uses piezoelectric material to restrict the dynamic amplitudes of a cantilever beam. The finite element analysis (FEA) model of the cantilever is created and incorporated with Macro Fiber Composite (MFC8507-P2) in the ANSYS framework. A comparative study has been performed using three different types of materials i.e., Polylactic acid (PLA), PLA with Short Carbon Fibers (PLA-SCF Composite), and PLA with Continuous Carbon Fibers (PLA-CCF Composite), for the beam. An external disturbance causes the beam to vibrate, and the MFC8507-P2 pat

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16

Shen, Chuan Liang, Ye Han, Xue Wei Song, and Da Xue Wang. "The Influence Analysis of Geometric Parameters on Piezoelectric Vibration Control." Applied Mechanics and Materials 433-435 (October 2013): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.193.

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The finite element method is adopted to simulate the vibration control effectiveness of autobody thin-walled structure by using the piezoelectric patches. The geometric parameters of thickness and area are chosen as the influence factors to analyze the control effectiveness of piezoelectric vibration control system. The simulation results show that the base metal thickness, piezoelectric patch thickness and the area of piezoelectric patch are main parameters and influence the control effectiveness obviously. The influence rules of these geometric parameters are obtained.

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17

Serhane, Hanane, Kouider Bendine, Farouk Benallel Boukhoulda, and Abdelkader Lousdad. "Numerical analysis based on finite element method of active vibration control of a sandwich plate using piezoelectric patches." Mechanics and Mechanical Engineering 24, no. 1 (2020): 7–16. http://dx.doi.org/10.2478/mme-2020-0005.

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AbstractAn active method of vibration control of a smart sandwich plate (SSP) using discrete piezoelectric patches is investigated. In order to actively control the SSP vibration, the plate is equipped with three piezoelectric patches that act as actuators. Based on the classical plate theory, a finite element model with the contributions of piezoelectric sensor and actuator patches on the mass and stiffness of the sandwich plate was developed to derive the state space equation. LQR control algorithm is used in order to actively control the SSP vibration. The accuracy of the present model is t

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18

Jarral, A. T., and R. A. Pasha. "MEASUREMENT AND SUPPRESSION OF CUTTING TOOL VIBRATION USING PIEZOELECTRIC CERAMIC IN ANSYS." Nucleus 50, no. 2 (2013): 149–53. https://doi.org/10.71330/thenucleus.2013.765.

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To measure vibration produced in lathe cutting tool various kinds of procedures are adopted. Small patch of piezoelectric ceramic material is successfully incorporated into turning cutting which is modeled in Pro Engineer and examined in finite element analysis to check vibrations in material cutting processes. Model and harmonic analysis are performed. The relative amplitudes of mode shapes and frequencies are identified by analyses which are causing chatter. The results are compared with the analysis which is performed without using piezoelectric material patch.

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19

Zitoun, Akram, Steven Dixon, Mihalis Kazilas, and David Hutchins. "The Effect of Changes in Magnetic Field and Frequency on the Vibration of a Thin Magnetostrictive Patch as a Tool for Generating Guided Ultrasonic Waves." Sensors 22, no. 3 (2022): 766. http://dx.doi.org/10.3390/s22030766.

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A set of experiments was designed and conducted to investigate the vibrational ultrasonic response of a thin magnetostrictive patch bonded to a glass plate, with changes in static and dynamic magnetic fields applied to the patch. Such arrangements are often used as a means of generating guided waves in pipes or plates, by attaching a patch to a sample’s surface. The effect of varying the applied static and dynamic magnetic field’s amplitudes and directions and the frequency of the dynamic magnetic field was studied. It was demonstrated that the vibration of the magnetostrictive patch could be

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20

Clark, R. L., M. R. Flemming, and C. R. Fuller. "Piezoelectric Actuators for Distributed Vibration Excitation of Thin Plates: A Comparison Between Theory and Experiment." Journal of Vibration and Acoustics 115, no. 3 (1993): 332–39. http://dx.doi.org/10.1115/1.2930353.

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Experimental results from vibration excitation of a simply supported plate with multiple patches of piezoceramic material bonded to the surface are compared to theoretical predictions for the vibration response. Results demonstrate that modes can be selectively excited depending on the chosen phasing of the voltage supplied to each actuator. In addition, experimental results indicate that the analytical model can be accurately used to predict the forcing function associated with the piezoceramic patch.

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21

Yin, Xinfeng, Yang Liu, Shihui Guo, W. Zhang, and C. S. Cai. "Three-Dimensional Vibrations of a Suspension Bridge Under Stochastic Traffic Flows and Road Roughness." International Journal of Structural Stability and Dynamics 16, no. 07 (2016): 1550038. http://dx.doi.org/10.1142/s0219455415500388.

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When studying the vibration of a bridge–vehicle coupled system, most researchers mainly focus on the vertical vibration of bridges under moving vehicular loads, while the lateral and longitudinal vibrations of the bridges and the stochastic characteristics of the traffic flows are neglected. However, for long-span suspension bridges, neglecting the bridge’s three-dimensional (3D) vibrations under stochastic traffic flows can cause considerable inaccuracy in predicting the dynamic performance. This study is mainly focused on establishing a new methodology fully considering a suspension bridge’s

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22

Guo, Yan, Yanan Jiang, Bin Huang, and Ji Wang. "Transverse Vibration Analysis of Composite Plates with Multiple Distributed Composite Patches." Shock and Vibration 2020 (November 27, 2020): 1–17. http://dx.doi.org/10.1155/2020/6618983.

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Transverse vibration of rectangular composite plates with multiple distributed composite patches is analyzed in this paper. Because of the geometric discrepancy between the plate and patch, analytical solutions are usually hard to achieve. The present model is formulated by using the Rayleigh–Ritz method and adopting various types of modal shape functions of uniform beam as admissible functions for different boundary conditions. The total system energies are calculated by adding the energies of the substrate plate and the energies of the patches. By imposing the displacement-matching condition

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23

Toftekær, Johan Frederik, and Jan Høgsberg. "Experimental validation of piezoelectric shunt tuning with residual mode correction: Damping of plate-like structures." Journal of Intelligent Material Systems and Structures 31, no. 9 (2020): 1220–39. http://dx.doi.org/10.1177/1045389x20914393.

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The effective vibration mitigation properties of piezoceramic patches with inductive-resistive shunts are investigated experimentally. A shunt tuning method is proposed, in which a consistent correction for the influence from residual vibration modes is included by an effective modal capacitance, evaluated from measured charge and voltage amplitudes in short- and open-circuit conditions, respectively. The robustness of the proposed method is verified experimentally for both a free beam and a free plate structure with four shunted piezoceramic patch pairs. A stable and fully passive inductor is

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Wang, Yi-Ren, Jin-Wei Chang, and Chen-Yu Lin. "Analysis of a Wind-Driven Power Generation System with Root Slapping Mechanism." Applied Sciences 14, no. 2 (2024): 482. http://dx.doi.org/10.3390/app14020482.

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This study introduces a groundbreaking slap-type Vibration Energy Harvesting (VEH) system, leveraging a rotating shaft with magnets to induce vibrations in an adjacent elastic steel sheet through magnetic repulsion. This unique design causes the elastic sheet to vibrate, initiating the oscillation of a seesaw-type rigid plate lever. The lever then slaps a piezoelectric patch (PZT) at the elastic steel sheet’s root, converting vibrations into electrical energy. Notably, the design enables the PZT to withstand deformation and flapping forces simultaneously, enhancing power conversion efficiency.

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25

Chen, Lei. "Distributed Hybrid Vibration Absorbers for Shock and Forced Vibrations." Applied Mechanics and Materials 166-169 (May 2012): 1709–12. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1709.

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The control methods used for free/shock vibration suppression are normally different from those used for forced vibration cancellation, because shock vibration is regarded as a type of transient vibration that is different in nature from steady-state forced vibration. However, both steady-state and shock excitations may occur in flexible structures, so there is a need to control both types of vibrations. To show the integration of the two different vibration control strategies, a hybrid control system based on adhesive strain gauges and PZT patches is proposed to construct a distributed resona

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26

Malgaca, L., and H. Karagülle. "Numerical and Experimental Study on Integration of Control Actions into the Finite Element Solutions in Smart Structures." Shock and Vibration 16, no. 4 (2009): 401–15. http://dx.doi.org/10.1155/2009/246419.

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Piezoelectric smart structures can be modeled using commercial finite element packages. Integration of control actions into the finite element model solutions (ICFES) can be done in ANSYS by using parametric design language. Simulation results can be obtained easily in smart structures by this method. In this work, cantilever smart structures consisting of aluminum beams and lead-zirconate-titanate (PZT) patches are considered. Two cases are studied numerically and experimentally in parallel. In the first case, a smart structure with a single PZT patch is used for the free vibration control un

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27

Akbarzadeh, Alireza, Mohsen Fallah, Navid Mahpeykar, and Nader Nabavi. "Application of Taguchi Optimization Method in Active Vibration Control of a Smart Beam." Advanced Materials Research 488-489 (March 2012): 1777–82. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.1777.

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Cantilevered beams can serve as a basic model for a number of structures used in various fields of industry, such as airplane wings, turbine blades and robotic manipulator arms.In this paper, the active vibration control of a smart cantilevered beam with a piezoelectric patch is studied. Additionally, the optimization of influential parameters of piezoelectric actuator for the purpose of vibration suppression is performed. Initially, the finite element modeling of the cantilevered beam and its piezoelectric patch is described and the implementation of a control system for vibration suppression

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Volosovets, A.O. "Analysis of arterial pressure variability in patients with acute cerebral stroke depending on the time of occurrence." Medicni perspektivi 22, no. 4 (2017): 25–32. https://doi.org/10.26641/2307-0404.2017.4.117663.

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Arterial hypertension can cause a pronounced negative influence on the state of the cerebral vascular system and lead to significant microtraumatization of the walls of the vessels and disruption of vascular autoregulation. This predictor has the greatest influence on the onset of ischemic stroke of atherothrombotic and lacunar subtypes, however, hypertension occurs almost in all patients with acute cerebral ischemia. Interesting and not at all presented in modern scientific literature is the question of the relationship of oscillation of blood pressure with the period of the onset of the focu

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29

Biglar, Mojtaba, and Hamid Reza Mirdamadi. "Integrated and Consistent Active Control Formulation and Piezotransducer Position Optimization of Plate Structures considering Spillover Effects." Shock and Vibration 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/276714.

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This study addresses new formulation for active vibration control of plates by optimal locations of attached piezotransducers. Free vibrations are solved by Rayleigh-Ritz and transient by assumed modes methods. Optimal orientations of patches are determined by spatial controllability/observability, as well as residual modes to reduce spillover. These criteria are used to achieve optimal fitness function defined for genetic algorithm to find optimal locations. To control vibrations, negative velocity feedback control is designed. Results indicate that, by locating piezopatches at optimal positi

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Sloss, J. M., J. C. Bruch, I. S. Sadek, and S. Adali. "Integral Equation Approach for Beams with Multi-Patch Piezo Sensors and Actuators." Journal of Vibration and Control 8, no. 4 (2002): 503–26. http://dx.doi.org/10.1177/107754602028161.

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An integral equation approach is developed for the solution of an adaptive beam problem with the beam undergoing free vibrations. The beam is controlled by a closed-loop system consisting of multiple patches of sensors and actuators which are bonded to the bottom and top surfaces of the beam. The coupling between sensors and actuators can be chosen arbitrarily and the control is exercised by displacement feedback. The integral equation governing the vibrations of the beam/piezo-patch system is derived by converting the corresponding differential equation, which is non-standard as a result of t

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31

Zhang, Xuping, James K. Mills, and William L. Cleghorn. "Vibration control of elastodynamic response of a 3-PRR flexible parallel manipulator using PZT transducers." Robotica 26, no. 5 (2008): 655–65. http://dx.doi.org/10.1017/s026357470800427x.

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SUMMARYThis paper addresses the dynamic simulation and control of structural vibrations of a 3-PRR parallel manipulator with three flexible intermediate links, to which are bonded lead zirconate titanate (PZT) actuators and sensors. Flexible intermediate links are modelled as Euler–Bernoulli beams with pinned-pinned boundary conditions. A PZT actuator controller is designed based on strain rate feedback (SRF) control. Control moments from PZT actuators are transformed to force vectors in modal space and are incorporated in the dynamic model of the manipulator. The dynamic equations are develop

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Tommasino, Domenico, Federico Moro, Bruno Bernay, Thibault De Lumley Woodyear, Enrique de Pablo Corona, and Alberto Doria. "Vibration Energy Harvesting by Means of Piezoelectric Patches: Application to Aircrafts." Sensors 22, no. 1 (2022): 363. http://dx.doi.org/10.3390/s22010363.

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Vibration energy harvesters in industrial applications usually take the form of cantilever oscillators covered by a layer of piezoelectric material and exploit the resonance phenomenon to improve the generated power. In many aeronautical applications, the installation of cantilever harvesters is not possible owing to the lack of room and/or safety and durability requirements. In these cases, strain piezoelectric harvesters can be adopted, which directly exploit the strain of a vibrating aeronautic component. In this research, a mathematical model of a vibrating slat is developed with the modal

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Zheng, Jun, Bin Dou, Zilong Li, Tianyu Wu, Hong Tian, and Guodong Cui. "Design and Analysis of a While-Drilling Energy-Harvesting Device Based on Piezoelectric Effect." Energies 14, no. 5 (2021): 1266. http://dx.doi.org/10.3390/en14051266.

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A while-drilling energy harvesting device is designed in this paper to recovery energy along with the longitudinal vibration of the drill pipes, aiming to serve as a continuous power supply for downhole instruments during the drilling procedure. Radial size of the energy harvesting device is determined through the drilling engineering field experience and geological survey reports. A piezoelectric coupling model based on the selected piezoelectric material was established via COMSOL Multiphysics numerical simulation. The forced vibration was analyzed to determine the piezoelectric patch length

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Farhadi, Sirwan, and Shahrokh Hosseini-Hashemi. "Effect of a Bonded Patch on Aeroelastic Behavior of Cantilevered Plates." Journal of Applied Mathematics 2010 (2010): 1–15. http://dx.doi.org/10.1155/2010/357642.

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In recent years, many researchers have studied vibration suppression of fluttering plates using piezoelectric actuators. Lots of these researchers have focused on optimal placement of piezoelectric patches to obtain maximum controllability. Although mass and stiffness characteristics of bonded patches can alter aeroelastic behavior of fluttering plates, few of them considered the effect of the mentioned parameters in optimization process. This paper investigates effect of a bonded patch on aeroelastic behavior of cantilevered plates in supersonic flow. For this purpose, critical dynamic pressu

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Sethi, V., and G. Song. "Optimal Vibration Control of a Model Frame Structure Using Piezoceramic Sensors and Actuators." Journal of Vibration and Control 11, no. 5 (2005): 671–84. http://dx.doi.org/10.1177/1077546305053396.

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This research concerns the active vibration control of a three-story model structural frame by using piezoceramics smart materials, in particular lead zirconate titanate (PZT), in the form of patches. These PZT patches are surface-bonded on the structure and function as actuators and sensors. To assist the control design, system identification is first performed. To excite the frame for identification purposes, a sweep sinusoidal input is used to drive the PZT actuator patches, and then a sixth-order state space model with a fit of 90% is identified to represent the dynamics of the first three

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Mehrvarz, Amin, Ali Najafi Ardekani, Mohammad Javad Khodaei, and Nader Jalili. "Vibration analysis and control of fluid containers using piezoelectrically-excited side wall." Journal of Vibration and Control 25, no. 7 (2019): 1393–408. http://dx.doi.org/10.1177/1077546318822374.

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The vibration analysis and control of containers with heavy loaded fluid is undertaken in this paper. The problem of fluid–structure vibration is viewed and analyzed from several viewpoints including both analytical methods and numerical techniques. In order to effectively control the fluid–structure vibration, one of the side walls is made flexible where two piezoelectric patches are utilized to sense the distributed displacements resulting from fluid-structure movements, while the other one is used to actively control the vibration. For this, a boundary control technique is used to actively

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Qiu, Zhi-cheng, Tao-xian Wang, and Xian-min Zhang. "Sliding mode predictive vibration control of a piezoelectric flexible plate." Journal of Intelligent Material Systems and Structures 32, no. 1 (2020): 65–81. http://dx.doi.org/10.1177/1045389x20948597.

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A non-contact vibration measurement and control system for a piezoelectric-patched flexible cantilever plate is presented, using laser displacement sensors. Two laser displacement sensors are utilized to detect the deflection information of the two corners of the end of the flexible board, due to its high measurement accuracy for the small amplitude residual vibration. The vibrations of the first bending and torsional mode of the flexible plate can be extracted from the combined information. To achieve a desirable performance for the active vibration control, a kind of sliding mode predictive

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Laplante, W., T. Chen, A. Baz, and W. Sheilds. "Active Control of Vibration and Noise Radiation from Fluid-Loaded Cylinder using Active Constrained Layer Damping." Journal of Vibration and Control 8, no. 6 (2002): 877–902. http://dx.doi.org/10.1177/1077546029206.

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Vibration and sound radiation from fluid-loaded cylindrical shells are controlled using patches of Active Constrained Layer Damping (ACLD). The performance and the enhanced damping characteristics via reduced vibrations and sound radiation in the surrounding fluid is demonstrated both theoretically and experimentally. A prime motivation for this work is the potential wide applications in submarines and torpedoes where acoustic stealth is critical to the effectiveness of missions. A finite element model is also developed to predict the vibration and the acoustic radiation in the surrounding flu

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Farhadi, S., and SH Hosseini-Hashemi. "Active vibration suppression of moderately thick rectangular plates." Journal of Vibration and Control 17, no. 13 (2011): 2040–49. http://dx.doi.org/10.1177/1077546310395962.

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In the present work, active vibration suppression of moderately thick rectangular plates by means of piezoelectric actuators is investigated. Based on Lagrange energy method, a finite element formulation is presented for mathematical modeling of the system. Using modal controllability criterion, a simple method is offered for optimal placement of the piezoelectric actuator. For a cantilevered plate with specific characteristics, the optimal position of a piezoelectric patch is investigated. Then, for suppression of plate vibrations, an active damping controller is designed using modal velocity

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Shen, Chuan Liang, Da Xue Wang, and Ye Han. "The Experimental Research on Piezoelectric Vibration Control for the Simplified Autobody Beam Structure." Advanced Materials Research 816-817 (September 2013): 353–57. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.353.

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The numerical simulation and experimental method are adopted to analyze the piezoelectric vibration control of the simplified autobody beam structure. The autobody beam structure is simplified as a beam fixed at both ends. The finite element model of beam structure with piezoelectric patches is established. The static analysis and modal analysis is conducted by the piezoelectric analysis of the finite element analysis software. The proportional and proportional-derivative control methods are studied in the piezoelectric active vibration control analysis for the simplified beam structure. The e

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CABAN, Jacek, Grzegorz LITAK, Bartłomiej AMBROŻKIEWICZ, Leszek GARDYŃSKI, Paweł STĄCZEK, and Piotr WOLSZCZAK. "IMPACT-BASED PIEZOELECTRIC ENERGY HARVESTING SYSTEM EXCITED FROM DIESEL ENGINE SUSPENSION." Applied Computer Science 16, no. 3 (2020): 16–29. http://dx.doi.org/10.35784/acs-2020-18.

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Vibration energy harvesting systems are using real ambient sources of vibration excitation. In our paper, we study the dynamical voltage response of the piezoelectric vibrational energy harvesting system (PVEHs) with a mechanical resonator possessing an amplitude limiter. The PVEHs consist of the cantilever beam with a piezoelectric patch. The proposed system was subjected to the inertial excitation from the engine suspension. Impacts of the beam resonator are useful to increase of system’s frequency transition band. The suitable simulations of the resonator and piezoelectric transducer are pe

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Kuliński, Krzysztof, and Jacek Przybylski. "Stability and vibrations control of a stepped beam using piezoelectric actuation." MATEC Web of Conferences 157 (2018): 08004. http://dx.doi.org/10.1051/matecconf/201815708004.

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The objects of this studies are the stability and transversal vibrations of the system composed of three segments, where in the centre part of the system two piezoelectric patches are perfectly bonded to the top and bottom surface of the host beam. The system is kinematically loaded as a result of prescribed displacement of one or both end supports. For the analysis purposes three different beam end supports have been taken into consideration, which prevent longitudinal displacements i.e. clamped-clamped, clamped-pinned and pinned-pinned. This type of beam loading not only affect its natural v

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Shahravi, Morteza, and Milad Azimi. "A comparative study for collocated and non-collocated sensor/actuator placement in vibration control of a maneuvering flexible satellite." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 8 (2014): 1415–24. http://dx.doi.org/10.1177/0954406214544182.

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This paper presents a study concerning the vibration control of smart flexible sub-structures of satellite during attitude maneuver. A comparison between the collocated and non-collocated piezoceramic patches acting as sensors and actuators is performed in order to investigate their effectiveness to suppress vibrations in flexible substructures. A rigid hub with two elastic appendages containing surface bounded piezoelectric patches is being considered as satellite model. Finite element method and Lagrangian formulation are used for derivation of system equations of motion. Stability proof of

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Shabanalinezhad, Hossein, Piero Malcovati, Cesare Svelto, and Gianluca Gatti. "Designing a vibration energy harvester for several directions of excitation in planar motion." Journal of Physics: Conference Series 2909, no. 1 (2024): 012003. https://doi.org/10.1088/1742-6596/2909/1/012003.

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Abstract Harvesting energy from a mechanical vibration source is always challenging and comes with drawbacks, especially when the vibration input changes direction very often. This research proposes a novel design to harvest energy from a planar mechanical vibration source no matter its direction of oscillation. To achieve this, a spiral beam with a tip mass is designed to be flexible to various directions of the vibration input in a horizontal plane, which is orthogonal to the direction of gravity. An approximate analytical investigation is first performed. Numerical simulations are then cond

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Sivrioglu, Selim, Fevzi Cakmak Bolat, and Ercan Erturk. "Active vibration control of a blade element with uncertainty modeling in PZT actuator force." Journal of Vibration and Control 25, no. 21-22 (2019): 2721–32. http://dx.doi.org/10.1177/1077546319868883.

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The aim of this research is to attenuate the vibrations of a blade structure with an attached piezoelectric actuator using robust multi-objective control. The force obtained from a piezoelectric patch loading has uncertainties due to the complicated shape (airfoil) of the blade element. A parameter-dependent model of the force equation is developed to understand the possible variation range of the actuation force. The modal analysis of the blade is performed to find vibration mode frequencies, and an aerodynamic load is generated experimentally to create steady-state vibration on the blade. A

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Araújo, Aurélio L., and José F. Aguilar Madeira. "Optimal passive shunted damping configurations for noise reduction in sandwich panels." Journal of Vibration and Control 26, no. 13-14 (2020): 1110–18. http://dx.doi.org/10.1177/1077546320910542.

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This article addresses the issue of vibration and noise reduction in laminated sandwich plates using piezoelectric patches with passive shunted damping. A finite element implementation of a laminated sandwich plate with viscoelastic core and surface bonded piezoelectric patches is used to obtain the frequency response of the panels. The sound transmission characteristics of the panels are evaluated by computing their radiated sound power using the Rayleigh integral method. Resistor and inductor shunt damping circuits are used to add damping to the sandwich panels. The optimal location of the s

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Söding, H. "Computation of springing transfer functions." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 223, no. 3 (2009): 291–304. http://dx.doi.org/10.1243/14750902jeme158.

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Ship vibrations excited continually by regular waves are predicted by a potential method. It takes into account the interaction of the oscillatory flow with the steady flow due to the ship's forward speed, including steady ship waves and squat, but it excludes non-linear oscillatory wave forces. A three-dimensional Rankine source patch method is used both for the steady and the oscillatory flow. Vibration damping by an immersed transom, wave radiation, bilge keels, propeller, and hatch cover friction are approximated. Application to a large containership demonstrates that, in this example, dam

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Valdes, S. H. Diaz, and C. Soutis. "Delamination Detection in Composite Laminates from Variations of Their Modal Characteristics." Journal of Low Frequency Noise, Vibration and Active Control 19, no. 1 (2000): 27–33. http://dx.doi.org/10.1260/0263092001492778.

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As a first step in developing a health monitoring system, the effect of delamination on the modal frequencies of laminated composite beams has been investigated. A piezoceramic patch driven with a linear rapid frequency sweep was used to induce vibrations on the structure and its response registered via piezoelectric sensors. Modal frequencies were obtained using concepts of resonant ultrasound spectroscopy (RUS). Changes of the modal frequencies after delamination initiation, compared to those of a non-delaminated specimen, gave a good indication of the degree of damage, demonstrating the fea

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Liu, Fangyuan, Fuzhou Song, Wanghuai Zhu, et al. "Ultra-Low Dielectric Constant Ca3(BO3)2 Microwave Ceramics and Their Performance Simulation in 5G Microstrip Patch Antennas." Crystals 15, no. 7 (2025): 599. https://doi.org/10.3390/cryst15070599.

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Ca3(BO3)2 microwave dielectric ceramics with space group R-3c (#167) were prepared by cold sintering, and their properties were systematically investigated. Phonon density of state diagrams for the Ca3(BO3)2 lattice were obtained based on first-principles calculations to provide a more comprehensive understanding of the lattice vibrational properties of the material. Raman scattering and infrared reflectance spectroscopy were employed to investigate the lattice vibrational characteristics, identifying two types of vibrational modes: internal modes associated with the planar bending and symmetr

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Shakthivel, T. S., and Ramesh Gupta Burela. "Vibration Based Piezoelectric Energy Harvesting." Applied Mechanics and Materials 852 (September 2016): 846–51. http://dx.doi.org/10.4028/www.scientific.net/amm.852.846.

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Piezoelectric energy harvesting has applications in aircraft technology, where the piezoelectric patches are attached to the wings of the aircraft to convert the mechanical vibrations into useful electrical energy, which further is used to power the sensors of Aircraft Health Monitoring System, inflight operations like lighting and onboard entertainment. In this article, the performance of vibration based piezoelectric energy harvester (PEH) for a given frequency range is studied. A piezoelectric material that has a maximum piezoelectric coefficient (PZT-G1195) is chosen to increase the effect

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