Multi-material topology optimization of piezoelectric composite structures for energy harvesting

He, Meng; Zhang, Xiaopeng; Fernandez, Lucas dos Santos; Molter, Alexandre; Xia, Liang; Shi, Tielin

doi:10.1016/j.compstruct.2021.113783

Cited by 38 publications

(19 citation statements)

References 48 publications

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“…The design objectives were considered, respectively, in this work, namely, the energy conversion efficiency and the open-circuit voltage. The energy conversion efficiency is defined as the ratio of the generated electric energy to the external mechanical work [26]:…”

Section: Optimization Model and Sensitivity Analysismentioning

confidence: 99%

“…Almeida and Pavanello [24] topologically designed the through-thickness geometrical features of a bimorph harvester using the bi-directional evolutionary structural optimization method [25]. He et al [26] proposed a multi-material topology optimization method to enhance the energy conversion efficiency of PEHs with simultaneous distribution of the elastic, piezoelectric and void materials. Previous investigations showed that the amount of piezoelectric material embedded in structures is positively correlated to the energy conversion efficiency [22,27].…”

Section: Introductionmentioning

confidence: 99%

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Topology Optimization of Piezoelectric Energy Harvesters for Enhanced Open-Circuit Voltage Subjected to Harmonic Excitations

Zhang

et al. 2022

Materials

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Energy harvesting devices made of piezoelectric material are highly anticipated energy sources for power wireless sensors. Tremendous efforts have been made to improve the performance of piezoelectric energy harvesters (PEHs). Noticeably, topology optimization has shown an attractive potential to design PEHs with enhanced energy conversion efficiency. In this work, an alternative yet more practical design objective was considered, where the open-circuit voltage of PEHs is enhanced by topologically optimizing the through-thickness piezoelectric material distribution of plate-type PEHs subjected to harmonic excitations. Compared to the conventional efficiency-enhanced designs, the open-circuit voltage of PEHs can be evidently enhanced by the proposed method while with negligible sacrifice on the energy conversion efficiency. Numerical investigations show that the voltage cancellation effect due to inconsistent voltage phases can be effectively ameliorated by optimally distributed piezoelectric materials.

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Section: Optimization Model and Sensitivity Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Topology Optimization of Piezoelectric Energy Harvesters for Enhanced Open-Circuit Voltage Subjected to Harmonic Excitations

Zhang

et al. 2022

Materials

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“…The use of FGMs with a gradient chemical composition has found wide application in materials used to eliminate thermal stresses and fractures [ 60 ], increase fracture toughness [ 61 ], and also increase wear resistance [ 62 ]. This conception was further extended to smart materials, such as piezoceramics, to improve reliability and create higher-order movements in actuators [ 63 , 64 , 65 ]. General research focuses on manufacturing a monolithic FGP by doping additional chemical elements and compounds to influence the change in resistivity, conductivity, piezoelectric coefficient, permittivity, porosity, or a combination of these properties [ 66 , 67 , 68 , 69 , 70 ].…”

Section: Functionally Graded Piezoceramicmentioning

confidence: 99%

A Review on Additive Manufacturing of Functional Gradient Piezoceramic

et al. 2022

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Functionally graded piezoceramics are a new generation of engineering materials whose final properties are determined by a chemical composition gradient (volume distribution), material microstructure, or design characteristics. This review analyzes possible ways to create a functionally graded piezoceramic material (gradient chemical composition, gradient porosity—controlled and disordered porosity) by additive manufacturing methods, to control such materials’ functional characteristics. An analysis of the creation of gradient piezoceramics using binder jetting technology is presented in more detail. The review shows that today, the creation of functional gradient piezoceramics by additive manufacturing is a poorly-studied but promising research area, due to the rapid development of the additive manufacturing market and their unique features in shaping parts.

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“…The piezoelectric composite cantilever beam model is also used in the work of He et al [24] to determine the optimal thickness of the PZT layer in the piezoelectric energy harvesters (PEH) to obtain the maximum electrical energy under static mechanical and external electrical excitation. FEM (finite element method) is used in the framework of the exact relations of linear piezoelectricity to obtain concrete numerical results on the influence of the volume fraction of the PZT material on electrical energy.…”

Section: Introductionmentioning

confidence: 99%

Vibration of a Two-Layer “Metal+PZT” Plate Contacting with Viscous Fluid

Kuzeci¹,

Akbarov²

2023

Computers, Materials &Amp; Continua

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The present work investigates the mechanically forced vibration of the hydro-elasto-piezoelectric system consisting of a two-layer plate "elastic+PZT", a compressible viscous fluid, and a rigid wall. It is assumed that the PZT (piezoelectric) layer of the plate is in contact with the fluid and time-harmonic linear forces act on the free surface of the elastic-metallic layer. This study is valuable because it considers for the first time the mechanical vibration of the metal+piezoelectric bilayer plate in contact with a fluid. It is also the first time that the influence of the volumetric concentration of the constituents on the vibration of the hydro-elasto-piezoelectric system is studied. Another value of the present work is the use of the exact equations and relations of elasto-electrodynamics for elastic and piezoelectric materials to describe the motion of the plate layers within the framework of the piecewise homogeneous body model and the use of the linearized Navier-Stokes equations to describe the flow of the compressible viscous fluid. The plane-strain state in the plate and the plane flow in the fluid take place. For the solution of the corresponding boundary-value problem, the Fourier transform is used with respect to the spatial coordinate on the axis along the laying direction of the plate. The analytical expressions of the Fourier transform of all the sought values of each component of the system are determined. The origins of the searched values are determined numerically, after which numerical results on the stress on the fluid and plate interface planes are presented and discussed. These results are obtained for the case where PZT-2 is chosen as the piezoelectric material, steel and aluminum as the elastic metal materials, and Glycerin as the fluid. Analysis of these results allows conclusions to be drawn about the character of the problem parameters on the frequency response of the interfacial stress. In particular, it was found that after a certain value of the vibration frequency, the presence of the metal layer in the two-layer plate led to an increase in the absolute values of the above interfacial stress.

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Multi-material topology optimization of piezoelectric composite structures for energy harvesting

Cited by 38 publications

References 48 publications

Topology Optimization of Piezoelectric Energy Harvesters for Enhanced Open-Circuit Voltage Subjected to Harmonic Excitations

Topology Optimization of Piezoelectric Energy Harvesters for Enhanced Open-Circuit Voltage Subjected to Harmonic Excitations

A Review on Additive Manufacturing of Functional Gradient Piezoceramic

Vibration of a Two-Layer “Metal+PZT” Plate Contacting with Viscous Fluid

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