Active damping of piezo-composite beams

Edery-Azulay, Lucy; Abramovich, Haim

doi:10.1016/j.compstruct.2005.04.026

Cited by 32 publications

(14 citation statements)

References 17 publications

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“…[1][2][3]. Piezoelectric materials are a class of useful damping materials, with which the vibration energy is changed into electric energy due to the piezoelectric effect and the electric energy is dissipated as thermal energy through an external electric resistance [4][5][6]. But the piezoelectric damping materials generally are brittle, fragile and hard.…”

Section: Introductionmentioning

confidence: 99%

Damping properties of epoxy-based composite embedded with sol–gel-derived Pb(Zr0.53Ti0.47)O3 thin film annealed at different temperatures

Guo

Mao

Qin

et al. 2011

J Mater Sci: Mater Electron

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Pb(Zr 0.53 Ti 0.47 )O 3 (PZT) thin films were prepared on Pt/Ti/SiO 2 /Si substrate by sol-gel method. The effect of annealing temperature on microstructure, ferroelectric and dielectric properties of PZT films was investigated. When the films were annealed at 550-850°C, the single-phase PZT films were obtained. PZT films annealed at 650-750°C had better dielectric and ferroelectric properties. The sandwich composites with epoxy resin/PZT film with substrate/epoxy resin were prepared. The annealing temperature of PZT films influenced their damping properties, and the epoxy-based composites embedded with PZT film annealed at 700°C had the largest damping loss factor of 0.923.

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Section: Introductionmentioning

confidence: 99%

Damping properties of epoxy-based composite embedded with sol–gel-derived Pb(Zr0.53Ti0.47)O3 thin film annealed at different temperatures

Guo

Mao

Qin

et al. 2011

J Mater Sci: Mater Electron

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“…A more recent study created an exact mathematical model of an aluminum beam with piezoelectric actuators. [8,9] All of these studies have failed to capture the objective of this study, which is to build an analytical model for modal analysis of a composite structure with active damping material.…”

Section: Current Solution Methodsmentioning

confidence: 99%

“…They found that extension-extension or shear-shear type controller-actuator pairs are most effective, and the choice depends mainly on the boundary conditions of the application. [8,9] Experimental work that has been completed at California Polytechnic State University has included work done by Hrovat, Lesniak, Cavalli, and Bach, among others. Each of these projects has built on the progress of the others, and some of them will be used as validation cases in Chapter V. Cavalli did more active control research in response to a grant funded by NASA.…”

Section: Current Solution Methodsmentioning

confidence: 99%

“…The performance of piezoelectric damping treatments has been predicted in analytical models. [8,9] General Motors also published a report that presented the Ritz assumed mode method as applied to piezoelectric material. [17] This report was used in combination with the Euler theory to approximate the piezoelectric effects.…”

Section: Current Solution Methodsmentioning

confidence: 99%

“…An electric field is applied across the poling direction to actuate the piezoelectric material. [2,8] Hybrid constrained layer damping treatments (HCLDT) have a piezoelectric ceramic layer that constrains a viscoelastic layer; this hybrid method provides augmented energy dissipation since the piezoelectric layer enhances the shear and compression deformation characteristics of the viscoelastic layer. [4,15] Hybrid composite damping treatments (HCDT) use a treatment that has piezoelectric rods embedded perpendicularly in a viscoelastic polymeric matrix, as shown in Figure 1.…”

Section: Vibration Suppression Techniquesmentioning

confidence: 99%

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Modal Analysis of Composite Structures With Damping Material

Tremaine¹

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Modal Analysis of Composite Structures with Damping Material Kellie TremaineThe purpose of this study is to develop an analytical solution for modal analysis of actively damped orthotropic composite plates in bending and to verify it with experimental analysis.The analytical modal analysis solution for composite plate dynamics is derived using Euler theory. This analysis applies to structures with orthotropic lamina of uniform material properties at any lamination angle. The bending-extensional coupling can be neglected for plates that are symmetric or approximately symmetric, which allows an exact solution for natural frequency and mode shape to be obtained. An exact solution can be found for natural vibration and in general.The active control is modeled analytically by combining the Lagrange equation with the Ritz Assumed Mode method. This analysis produces a generalized coordinate vector that correlates the assumed mode to the particular amplitude of a particular case. The kinetic energy dissipated by the piezoelectric actuator from the system over one oscillation can be calculated from the generalized coordinate vector and the assumed mode. The equivalent damping ratio of the active control system is calculated as the ratio between the kinetic energy absorbed by the piezoelectric actuator from the system in one oscillation and the maximum strain energy of the system during that oscillation.A point mass on the plate, such as an accelerometer mass, can also be modeled as a single layer of uniform mass, that is an isotropic layer, by equating the potential energy of the point mass with the potential energy of the uniform mass layer. It is important to note that the mass of the isotropic layer is frequency dependent, and it has no effect on the plate stiffness.The analytical model is validated by comparison to experimental work. The samples studied were aluminum and composite plates of various lengths. The active control predictions were also validated using previous experimental work completed at California Polytechnic State University in San Luis Obispo. These cases included active control of an aluminum beam with a patch of piezoelectric material and an aluminum sailplane with a patch of piezoelectric material.v Results indicate that while the analytical mode solutions are in good agreement with the experimental results, they are also systematically higher than the experimental results. The analytical active control solutions match previous work when the piezoelectric effects are linear. The main result of adding an active control system is approximately a 5-10% increase in modal frequencies and a 200-800% increase of damping ratio.

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Experimental Investigation of the Frequency‐Dependent Performance of Thermoplastic‐Compatible Piezoceramic Modules (TPM)

2018

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Especially due the background of highly automated processes within the processing of fiber‐reinforced polymer (FRP) structures with thermoplastic matrix systems, a wide field of functionally integrative lightweight construction solutions ready for mass production is developed. Furthermore, the layered texture in combination with the specific heating processes of the semi‐finished products enable a material‐homogeneous integration of flat sensors, respectively, actuators into such structures. Due to this, the development of functional elements which are tailored to process is of increasingly importance to generate a significant additional benefit for this material class. The developed thermoplastic‐compatible piezoceramic modules (TPM) are applicable for adhesive‐free integration into fiber‐reinforced thermoplastic structures within the forming process, which is realized by hot‐stamping or thermoforming. On the one hand such active composite parts is used for material integrated sensorial tasks, for example, for condition or structural health monitoring. On the other hand, actuator applications such as natural frequency manipulation or structural morphing are conceivable as application fields. The paper reports on the manufacturing process of TPM and the major‐signal behavior driven by the use of different functional layers using piezoactive fiber composites, respectively, piezoelectrical wafer material. In addition, the frequency‐dependent performance of the defined TPM is compared to commercially available flat transducers like Macro Fiber Composites (MFC, Smart Material GmbH) and DuraAct (PI Ceramic GmbH) actuators by means of voltage‐strain behavior driven by high‐voltage excitation at frequencies of 5, 50, and 500 Hz. Therefore, the use of an adapted high‐speed digital image correlation method is been applied. The aims of the investigations are to proof the functionality of novel TPM and to demonstrate the performance compared to common flat piezo transducers.

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Active damping of piezo-composite beams

Cited by 32 publications

References 17 publications

Damping properties of epoxy-based composite embedded with sol–gel-derived Pb(Zr0.53Ti0.47)O3 thin film annealed at different temperatures

Damping properties of epoxy-based composite embedded with sol–gel-derived Pb(Zr0.53Ti0.47)O3 thin film annealed at different temperatures

Modal Analysis of Composite Structures With Damping Material

Experimental Investigation of the Frequency‐Dependent Performance of Thermoplastic‐Compatible Piezoceramic Modules (TPM)

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