FINITE ELEMENT ANALYSIS FOR EFFECTIVE ELECTRO-ELASTIC PROPERTIES OF THREE-DIMENSIONAL BRAIDED PIEZOELECTRIC CERAMIC MATRIX COMPOSITES

Abstract

Abstract: Based on the microstructure of three-dimensional (3-D) braided perform, the electro-elastic coupling field volume average theory and finite element method, the effective electro-elastic properties of 3-D braided piezoelectric ceramic matrix composites are studied, and a finite element model of 3-D braided piezoelectric ceramic matrix composites in displacement-electric coupling field is established. By applying the displacement load and electric load boundary conditions to the representative volume element of the composites, the effective elastic coefficients, piezoelectric coefficients and dielectric coefficients of 3-D braided piezoelectric ceramic matrix composites with different fiber volume fraction are predicted. Numerical results illustrate that 3-D braided piezoelectric ceramic matrix composites can improve the overall mechanical properties of the piezoelectric ceramic significantly, and the good electrical properties are maintained.

Key words: three-dimensional braided composites, displacement-electric coupling field, effective electro-elastic properties, finite element method

CLC Number:

TB332

MA Xiao, WEI Gao-feng. FINITE ELEMENT ANALYSIS FOR EFFECTIVE ELECTRO-ELASTIC PROPERTIES OF THREE-DIMENSIONAL BRAIDED PIEZOELECTRIC CERAMIC MATRIX COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 11-16.

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