Simple closed-form expressions for the effective properties of multilaminated flexoelectric composites

David Guinovart-Sanjuán, Kuppalapalle Vajravelu, Reinaldo Rodríguez-Ramos, Raúl Guinovart-Díaz, Federico J. Sabina, Jose Merodio

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A multilayered rectangular flexoelectric structure is considered. This composite has a unit cell of N-constituents which belong to the cubic crystal symmetry. Using the two-scale asymptotic homogenization method, explicit expressions of the local problems are derived. Simple closed-form formulas of the effective stiffness, piezoelectric, dielectric, and flexoelectric tensors are given, based on the solutions of local problems of stratified multilayered composites with perfect contact at the interface. These formulas provide information about the symmetry of the homogenized structure. As a numerical example, a bilaminate composite where the layers are perpendicular to the x3 axis is studied, and the constituents are Barium Titanate and Gallium Arsenide. The composite after the homogenization process exhibits flexoelectric properties with tetragonal 4 ¯ 2 m crystal symmetry. The effective properties are computed for several constituents of volume fractions.

Original languageEnglish (US)
Article number4
JournalJournal of Engineering Mathematics
Volume127
Issue number1
DOIs
StatePublished - Apr 2021
Externally publishedYes

Bibliographical note

Funding Information:
RRR thanks Departamento de Matemáticas y Mecánica, IIMAS and PREI-DGAPA, COIC at UNAM for their support to his research project. FJS thanks the sponsorship of PAPIIT-DGAPA-UNAM IA100919.

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.

Keywords

  • Flexoelectricity
  • Homogenization
  • Laminated structures

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