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Numerical estimation of stress intensity factors in cracked functionally graded piezoelectric materials – A scaled boundary finite element approach
Aladurthi L.N. Pramod, Ean Tat Ooi, Chongmin Song,
Published in Elsevier Ltd
2018
Volume: 206
   
Pages: 301 - 312
Abstract
The stress intensity factors and the electrical displacement intensity factor for functionally graded piezoelectric materials (FGPMs) are influenced by: (a) the spatial variation of the mechanical property and (b) the electrical and mechanical boundary conditions. In this work, a semi-analytical technique is proposed to study the fracture parameters of FGPMs subjected to far field traction and electrical boundary conditions. A scaled boundary finite element formulation for the analysis of functionally graded piezoelectric materials is developed. The formulation is linearly complete for uncracked polygons and can capture crack tip singularity for cracked polygons. These salient features enable the computation of the fracture parameters directly from their definition. Numerical examples involving cracks in FGPMs show the accuracy and efficiency of the proposed technique. © 2018 Elsevier Ltd
About the journal
JournalData powered by TypesetComposite Structures
PublisherData powered by TypesetElsevier Ltd
ISSN02638223
Open AccessNo
Concepts (18)
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    Boundary conditions
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    Crack tips
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    Finite element method
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    Geometry
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    Numerical methods
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    Piezoelectric materials
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    Piezoelectricity
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    Stress intensity factors
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    Structural analysis
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    ELECTRICAL BOUNDARY CONDITIONS
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    Finite element formulations
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    FUNCTIONALLY GRADED PIEZOELECTRIC MATERIAL
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    INTENSITY FACTORS
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    PEIZOELECTRIC
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    POLYGONS
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    SCALED BOUNDARY FINITE ELEMENT METHOD
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    Semi-analytical techniques
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    Functionally graded materials