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Study of a propagating finite crack in functionally graded piezoelectric materials considering dielectric medium effect

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/j.ijsolstr.2008.11.005
AuthorSearch for: ; Search for: ORCID identifier: https://orcid.org/0009-0008-0777-7919
FormatText, Article
Subjectfunctionally graded piezoelectric materials (FGPMs); propagating crack; dielectric crack
Abstract
This paper provides a study of the problem of a propagating finite crack under in-plane loading in functionally graded piezoelectric materials (FGPMs). The analytical formulations are developed by Fourier transforms and the resulting singular integral equations are solved by using Chebyshev polynomials. By using a dielectric crack model with deformation-dependent electric boundary condition, numerical simulations are made to show the effects of the dielectric medium, the gradient of material properties and the speed of crack propagation on the fracture parameters, such as the stress, electric displacement and crack opening displacement intensity factors. A critical state for the electromechanical loading applied to the FGPMs is observed, which determines whether the traditionally impermeable (or permeable) crack model serves as the upper or lower bound for the dielectric model. The validity of this dielectric crack model is also examined by comparing the results of different existing crack models.
Publication date
PublisherElsevier
In
  • International Journal of Solids and Structures 46, no. 6 (14 November 2008): 1362–1372.
LanguageEnglish
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

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Record identifiere83b2063-26eb-46c7-b45a-cbec36fbf26b
Record created2024-12-19
Record modified2024-12-19
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