Characterizing flexoelectricity in composite material using the element-free Galerkin method

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He, B.; Javvaji, B.; Zhuang, X.: Characterizing flexoelectricity in composite material using the element-free Galerkin method. In: Energies 12 (2019), Nr. 2, 271. DOI: https://doi.org/10.3390/en12020271

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Abstract: 
This study employs the Element-Free Galerkin method (EFG) to characterize flexoelectricity in a composite material. The presence of the strain gradient term in the Partial Differential Equations (PDEs) requires C 1 continuity to describe the electromechanical coupling. The use of quartic weight functions in the developed model fulfills this prerequisite. We report the generation of electric polarization in a non-piezoelectric composite material through the inclusion-induced strain gradient field. The level set technique associated with the model supervises the weak discontinuity between the inclusion and matrix. The increased area ratio between the inclusion and matrix is found to improve the conversion of mechanical energy to electrical energy. The electromechanical coupling is enhanced when using softer materials for the embedding inclusions. © 2019 by the authors.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Fakultät für Maschinenbau

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