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SBFEM for fracture analysis of piezoelectric composites under thermal load
Chao Li, Ean Tat Ooi, Chongmin Song,
Published in Elsevier Ltd
2015
Volume: 52
   
Pages: 114 - 129
Abstract
This paper extends a semi-analytical technique, the so-called scaled boundary finite element method (SBFEM), to analyze fracture behaviors of piezoelectric materials and piezoelectric composites under thermal loading. In this method, only the boundary is discretized leading to a reduction of the spatial dimension by one. The temperature field in the domain is obtained using the SBFEM and expressed as a series of power functions of the radial coordinate. The resulting stress and electric displacement distribution along the radial direction is represented analytically. This permits the generalized stress and electric displacement intensity factors to be directly evaluated from the solution by following standard stress recovery procedures in the finite element method (FEM). Numerical examples are presented to verify the proposed technique with the analytical solutions and the results from the literature. The present results highlight the accuracy, simplicity and efficiency of the proposed technique. © 2014 Elsevier Ltd.
About the journal
JournalData powered by TypesetInternational Journal of Solids and Structures
PublisherData powered by TypesetElsevier Ltd
ISSN00207683
Open AccessYes
Concepts (18)
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    Electric fields
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    Fracture
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    FRACTURE MECHANICS
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    Numerical methods
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    Piezoelectric materials
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    Piezoelectricity
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    Stresses
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    Thermal load
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    Thermal stress
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    ELECTRIC DISPLACEMENT
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    GENERALIZED STRESS
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    PIEZOELECTRIC COMPOSITE
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    RADIAL COORDINATES
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    SBFEM
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    SCALED BOUNDARY FINITE ELEMENT METHOD
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    Semi-analytical techniques
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    STRESS AND ELECTRIC DISPLACEMENT INTENSITY FACTORS
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    Finite element method