Effective properties evaluation for smart composite materials

Medeiros, Ricardo de; Moreno, Mariano Eduardo; Marques, Flávio D.; Tita, Volnei

doi:10.1590/s1678-58782012000500004

Cited by 27 publications

(21 citation statements)

References 16 publications

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“…The effect of fibre distribution, effect of fibre shape and geometric connectivity, and effect of poling on the effective electromechanical properties of 1-3 piezoelectric composites have been reported by Kar-Gupta and Venkatesh [32][33][34]. Unit cell models of unidirectional periodic 1-3 piezoelectric composites using periodic boundary conditions have also been reported by Berger et al [35,36] and by Medeiros et al [37]. Recent years have seen an interest in nonlinear finite element modeling of laminated piezoelectric composites [38,39].…”

Section: Introductionmentioning

confidence: 86%

“…The first step towards prediction of effective properties of a composite using FEM is to select an RVE or a unit cell. The RVE must be small enough compared to the macroscopic body, but it should be large enough to capture the major features of the microstructure [37]. An RVE may be of several geometries, for example, cubic, hexagonal, and spherical.…”

Section: Micromechanics-based Approachmentioning

confidence: 99%

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Evaluation of Effective Elastic, Piezoelectric, and Dielectric Properties of SU8/ZnO Nanocomposite for Vertically Integrated Nanogenerators Using Finite Element Method

Mishra

Krishna

Singh

et al. 2017

Journal of Nanomaterials

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A nanogenerator is a nanodevice which converts ambient mechanical energy into electrical energy. A piezoelectric nanocomposite, composed of vertical arrays of piezoelectric zinc oxide (ZnO) nanowires, encapsulated in a compliant polymeric matrix, is one of most common configurations of a nanogenerator. Knowledge of the effective elastic, piezoelectric, and dielectric material properties of the piezoelectric nanocomposite is critical in the design of a nanogenerator. In this work, the effective material properties of a unidirectional, unimodal, continuous piezoelectric composite, consisting of SU8 photoresist as matrix and vertical array of ZnO nanowires as reinforcement, are systematically evaluated using finite element method (FEM). The FEM simulations were carried out on cubic representative volume elements (RVEs). Four different types of arrangements of ZnO nanowires and three sizes of RVEs have been considered. The volume fraction of ZnO nanowires is varied from 0 to a maximum of 0.7. Homogeneous displacement and electric potential are prescribed as boundary conditions. The material properties are evaluated as functions of reinforcement volume fraction. The values obtained through FEM simulations are compared with the results obtained via the Eshelby-MoriTanaka micromechanics. The results demonstrate the significant effects of ZnO arrangement, ZnO volume fraction, and size of RVE on the material properties.

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Section: Introductionmentioning

confidence: 86%

Section: Micromechanics-based Approachmentioning

confidence: 99%

Evaluation of Effective Elastic, Piezoelectric, and Dielectric Properties of SU8/ZnO Nanocomposite for Vertically Integrated Nanogenerators Using Finite Element Method

Mishra

Krishna

Singh

et al. 2017

Journal of Nanomaterials

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“…Numerous studies have been conducted analytically and numerically to predict the effective mechanical and electrical properties of lead-based piezoelectric fiber composites [19][20][21][22][23]. Chan and Unsworth [24] and Smith and Auld [25] reported analytical methods which were not sufficient to give overall material properties.…”

Section: Finite Element Modeling Of Microfiber Composites and Validationmentioning

confidence: 99%

A study on epoxy‐based 1–3 piezoelectric composites using finite element method

Kothari

Kumar

et al. 2015

Polymer Composites

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“…For this, intelligent devices capable for performing more than one function have been developed, often using an active material. These materials have been largely investigated during the last years [2].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Dynamic Analyses via Smart Composites

Medeiros

Ribeiro

Ferreira

et al. 2012

Int. J. Vehicle Structures and Systems

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This paper consists of evaluating a methodology based on a representative volume element and finite element analyses, using numerical and experimental modal analyses via smart composites. Vibration tests and finite element models are developed for aluminium cantilever beam with and without piezoelectric patches. The effective properties of the smart composites are calculated by applying the proposed methodology. Numerical predictions and experimental results are compared, showing that the relative differences between these dynamic analyses via piezoelectric patches are within 2.0%. The dynamic behaviour of the structure can be reasonably changed for a variation in the effective coefficients of the piezoelectric patches.

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Effective properties evaluation for smart composite materials

Cited by 27 publications

References 16 publications

Evaluation of Effective Elastic, Piezoelectric, and Dielectric Properties of SU8/ZnO Nanocomposite for Vertically Integrated Nanogenerators Using Finite Element Method

Evaluation of Effective Elastic, Piezoelectric, and Dielectric Properties of SU8/ZnO Nanocomposite for Vertically Integrated Nanogenerators Using Finite Element Method

A study on epoxy‐based 1–3 piezoelectric composites using finite element method

Numerical and Experimental Dynamic Analyses via Smart Composites

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