Improved passive shunt vibration control of smart piezo-elastic beams using modal piezoelectric transducers with shaped electrodes

Vasques, C. M. A.

doi:10.1088/0964-1726/21/12/125003

Cited by 21 publications

(21 citation statements)

References 43 publications

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“…The idea provides a novel approach to design a resonant shunt. Vasques [93] employed shaped electrodes to develop a two-layered RL shunted piezo smart Euler-Bernoulli beam. The results demonstrated that the capacitance for the modal case is mode dependent and is always lower than that for uniform electrodes.…”

Section: Multimodal Vibration Controlmentioning

confidence: 99%

Shunt Damping Vibration Control Technology: A Review

Yan

Wang

et al. 2017

Applied Sciences

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Smart materials and structures have attracted a significant amount of attention for their vibration control potential in engineering applications. Compared to the traditional active technique, shunt damping utilizes an external circuit across the terminals of smart structure based transducers to realize vibration control. Transducers can simultaneously serve as an actuator and a sensor. Such unique advantage offers a great potential for designing sensorless devices to be used in structural vibration control and reduction engineering. The present literature combines piezoelectric shunt damping (PSD) and electromagnetic shunt damping (EMSD), establishes a unified governing equation of PSD and EMSD, and reports the unique vibration control performance of these shunts. The schematic of shunt circuits is given and demonstrated, and some common control principles and equations of these shunts are summarized. Finally, challenges and perspective of the shunt damping technology are discussed, and suggestions made based on the knowledge and experience of the authors.

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Section: Multimodal Vibration Controlmentioning

confidence: 99%

Shunt Damping Vibration Control Technology: A Review

Yan

Wang

et al. 2017

Applied Sciences

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“…For the smart structure system, the coupled field effect of the piezoelectric material has shown viable interactions between the electrical, thermal, and mechanical behaviours. In the earlier studies, there have been growing mathematical interests in the applications for piezoelectric structures in structural control-based sensing and actuation systems [30]- [34], shape control-based sensing and actuation under static and dynamic responses [35]- [37], strain-type sensor networks [38]- [39], feedback gain control-based sensor and actuator systems [40][41], thermal effects [37], [42]- [43], and shunt control-based circuit systems [44]- [47]. Over the past decade, smart structures for converting the mechanical energy into electrical energy have shown application in micropower extraction for the use of extending the battery life and enabling wireless sensor devices.…”

Section: Introductionmentioning

confidence: 99%

A smart pipe energy harvester excited by fluid flow and base excitation

Lumentut

Friswell

2018

Acta Mech

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This paper presents electromechanical dynamic modelling of the partially smart pipe structure subject to the vibration responses from fluid flow and input base excitation for generating the electrical energy. We believe that this work shows the first attempt to formulate the unified analytical approach of flow-induced vibrational smart pipe energy harvester in application to the smart sensor-based structural health monitoring systems including those to detect flutter instability. The arbitrary topology of the thin electrode segments located at the surface of the circumference region of the smart pipe has been used so that the electric charge cancellation can be avoided. The analytical techniques of the smart pipe conveying fluid with discontinuous piezoelectric segments and proof mass offset, connected with the standard AC-DC circuit interface, have been developed using the extended charge-type-Hamiltonian mechanics. The coupled field equations reduced from the Ritz method-based weak form analytical approach have been further developed to formulate the orthonormalised dynamic equations. The reduced equations show combinations of the mechanical system of the elastic pipe and fluid flow, electromechanical system of the piezoelectric component, and electrical system of the circuit interface. The electromechanical multi-mode frequency and time signal waveform response equations have also been formulated to demonstrate the power harvesting behaviours. Initially, the optimal power output due to optimal load resistance without the fluid effect is discussed to compare with previous studies. For potential application, further parametric analytical studies of varying partially piezoelectric pipe segments have been explored to analyse the dynamic stability/instability of the smart pipe energy harvester due to the effect of fluid and input base excitation. Further proof between case studies also include the effect of variable flow velocity for optimal power output, 3-D frequency response, the dynamic evolution of the smart pipe system based on the absolute velocity-time waveform signals, and DC power output-time waveform signals.

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“…MEMCF as a metrics in the structural scale has many important applications. A direct application is the design of modal transducers [8,10], where the MEMCF is used to examine whether the piezoelectric subsystem is coupled only with the target mode (modal sensor) or it is uncoupled with the target mode(modal filter). Another application is the passive vibration control.…”

Section: Introductionmentioning

confidence: 99%

Wave Electromechanical Coupling Factor for the Guided Waves in Piezoelectric Composites

et al. 2018

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A novel metrics termed the ‘wave electromechanical coupling factor’ (WEMCF) is proposed in this paper, to quantify the coupling strength between the mechanical and electric fields during the passage of a wave in piezoelectric composites. Two definitions of WEMCF are proposed, leading to a frequency formula and two energy formulas for the calculation of such a factor. The frequency formula is naturally consistent with the conventional modal electromechanical coupling factor (MEMCF) but the implementation is difficult. The energy formulas do not need the complicated wave matching required in the frequency formula, therefore are suitable for computing. We demonstrated that the WEMCF based on the energy formula is consistent with the MEMCF, provided that an appropriate indicator is chosen for the electric energy. In this way, both the theoretical closure and the computational feasibility are achieved. A numerical tool based on the wave and finite element method (WFEM) is developed to implement the energy formulas, and it allows the calculation of WEMCF for complex one-dimensional piezoelectric composites. A reduced model is proposed to accelerate the computing of the wave modes and the energies. The analytical findings and the reduced model are numerically validated against two piezoelectric composites with different complexity. Eventually an application is given, concerning the use of the shunted piezoelectric composite for vibration isolation. A strong correlation among the WEMCF, the geometric parameters and the energy transmission loss are observed. These results confirm that the proposed WEMCF captures the physics of the electromechanical coupling phenomenon associated with the guided waves, and can be used to understand, evaluate and design the piezoelectric composites for a variety of applications.

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Improved passive shunt vibration control of smart piezo-elastic beams using modal piezoelectric transducers with shaped electrodes

Cited by 21 publications

References 43 publications

Shunt Damping Vibration Control Technology: A Review

Shunt Damping Vibration Control Technology: A Review

A smart pipe energy harvester excited by fluid flow and base excitation

Wave Electromechanical Coupling Factor for the Guided Waves in Piezoelectric Composites

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