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Article Dans Une Revue Smart Materials and Structures Année : 2011

Optimization of the piezoelectric response of 0-3 composites: a modelling approach.

Résumé

Finite element modeling is used in this study to optimize the electromechanical behavior of 0-3 composites according to the material properties of their constituents. Our modeling approach considers an 'extended' 2D representative volume element (RVE) with randomly dispersed piezoelectric particles. A variable distribution of their polarization axes is also implemented because a full periodic arrangement of fillers and a unique poling orientation are unrealistic in practice. Comparisons with a simpler RVE and with an analytical model based on the Mori-Tanaka approach are performed as a function of the particle concentration for the elastic, dielectric and piezoelectric homogenized properties. An optimization of the piezoelectric response of 0-3 composites according to material considerations is then computed, allowing it to be shown that the piezoelectric strain coefficient is not the only relevant parameter and that lead-free piezoelectric fillers such as LiNbO3 and ZnO are competitive alternatives. Finally, the piezoelectric responses of 0-3 composites with different filler arrangements are quantitatively compared to 1-3 composites and to the corresponding bulk material.

Dates et versions

hal-00633570 , version 1 (18-10-2011)

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Bertrand Chambion, Laurent Goujon, Laurent Badie, Yannick Mugnier, Christine Barthod, et al.. Optimization of the piezoelectric response of 0-3 composites: a modelling approach.. Smart Materials and Structures, 2011, 20 (11), 115006 (8pp). ⟨10.1088/0964-1726/20/11/115006⟩. ⟨hal-00633570⟩
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