A piezoelectric-inhomogeneity system with imperfect interface

“…The stress piezoelectric effective coefficientd is stiffer for the smallest values of χ * . Recently, Shodja et al [42] investigated the effects of different interface conditions on the electro-mechanical response of the matrix-fiber sensor system under loading conditions. Different boundary value problems in a unified manner and various fiber-matrix interface conditions were considered.…”

Section: Overall Piezoelectric Properties For Different Arrangementsmentioning

confidence: 99%

Influence of imperfect elastic contact condition on the antiplane effective properties of piezoelectric fibrous composites

et al. 2009

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A fiber-reinforced periodic piezoelectric composite, where the constituents exhibit transverse isotropic properties, is considered. The fiber cross-section is circular and the periodicity is the same in two orthogonal directions. Imperfect mechanic contact conditions at the interphase between the matrix and fibers are represented in parametric form. In order to analyze the influence of the imperfect interface effect over the behavior of the composite, the effective axial piezoelectric moduli are obtained by means of the Asymptotic Homogenization Method. Some numerical examples are given.

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“…This approach has been employed in some articles. [9][10][11][12] It is noteworthy to mention that the interface failure in the realm of elastic materials occurs in the form of normal debonding, inplane sliding, out-of-plane sliding or any combination of these types. In other words, imperfection takes place only in the form of displacement discontinuities.…”

Section: Introductionmentioning

confidence: 99%

Characterization of piezoelectric composites with mechanical and electrical imperfect contacts

Rodrı́guez-Ramos

Guinovart-Dı́az

López-Realpozo

et al. 2015

Journal of Composite Materials

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The aim of the present work is to study the influence of the mechanical and electrical imperfections in reinforced piezoelectric composite materials with unidirectional cylindrical fibers periodically distributed in rhombic cells under mechanical and electrical imperfect contacts. The behavior of the composites is studied through two approaches: the two-scale asymptotic homogenization method and the finite element method. The asymptotic homogenization method is applied to a two-phase composite with mechanical and electrical imperfect contacts and to a three-phase composite with perfect contact in the interphase. The constituents of the composite are homogeneous piezoelectric materials with transversely isotropic properties. The local problems are formulated for the spring-capacitor and three-phase models by the asymptotic homogenization method. The solution of each plane local problem is found using potential methods of a complex variable and the properties of doubly periodic Weierstrass elliptic functions. Closed-form formulae are obtained for the effective properties of the composites with both types of imperfect contacts and different configuration of the cells. The finite element method is implemented for analysis of piezoelectric composite materials with unidirectional cylindrical fibers periodically distributed in rhombic cells under mechanical and electrical imperfect contacts. Some numerical examples are given under the presence of both imperfect contacts and different arrangement of the cells. Comparisons between the numerical results reported by asymptotic homogenization method and finite element method are provided.

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A piezoelectric-inhomogeneity system with imperfect interface

Cited by 49 publications

References 16 publications

Overall properties in fibrous elastic composite with imperfect contact condition

Overall properties in fibrous elastic composite with imperfect contact condition

Influence of imperfect elastic contact condition on the antiplane effective properties of piezoelectric fibrous composites

Characterization of piezoelectric composites with mechanical and electrical imperfect contacts

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