Exact size-dependent connections between effective moduli of fibrous piezoelectric nanocomposites with interface effects

研究成果: Article

60 引文 斯高帕斯(Scopus)

摘要

We consider the macroscopic behavior of two-phase fibrous piezoelectric composites. The fibers are of circular cross-section with the same radius. Along the interfaces between the fibers and the matrix we consider the effects of surface stress and surface electric displacement. The constituents are transversely isotropic and exhibit pyroelectricity. We find that the overall thermoelectroelastic moduli of these solids must comply with two sets of exact connections. The first set, similar to Hill's universal connections, provides five constraints between the six axisymmetric overall electroelastic moduli. The second set relates the effective coefficients of thermal stress and pyroelectric coefficients to the effective electroelastic moduli, in analogy with Levin's formula. In contrast to their conventional counterparts, i.e., without surface effects, the presence of surface effects makes both sets of connections dependent on the absolute size of the nanoinclusions.

原文English
頁(從 - 到)205-217
頁數13
期刊Acta Mechanica
196
發行號3-4
DOIs
出版狀態Published - 2008 三月 1

    指紋

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanical Engineering

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