Finite element homogenization technique for the characterization of <i>d</i><sub>15</sub> shear piezoelectric macro-fibre composites - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Smart Materials and Structures Année : 2011

Finite element homogenization technique for the characterization of d15 shear piezoelectric macro-fibre composites

Résumé

A finite element homogenization method for a shear actuated $d_{15}$ macro-fibre composite (MFC) made of seven layers (Kapton, acrylic, electrode, piezoceramic fibre and epoxy composite, electrode, acrylic, Kapton) is proposed and used for the characterization of its effective material properties. The methodology is first validated for the MFC active layer only, made of piezoceramic fibre and epoxy, through comparison with previously published analytical results. Then, the methodology is applied to the seven-layer MFC. It is shown that the packaging reduces significantly the shear stiffness of the piezoceramic material and, thus, leads to significantly smaller effective electromechanical coupling coefficient $k_{15}$ and piezoelectric stress constant $e_{15}$ when compared to the piezoceramic fibre properties. However, it is found that the piezoelectric charge constant $d_{15}$ is less affected by the softer layers required by the MFC packaging.
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hal-01572310 , version 1 (06-08-2017)

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Marcelo Areias Trindade, Ayech Benjeddou. Finite element homogenization technique for the characterization of d15 shear piezoelectric macro-fibre composites. Smart Materials and Structures, 2011, 20 (7), ⟨10.1088/0964-1726/20/7/075012⟩. ⟨hal-01572310⟩

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