Artículo
Flexoelectric anisotropy and shear contributions in lead-free piezocomposites
Autor/es | Jagdish, A.K.
Buroni Cuneo, Federico Carlos Melnik, Roderick Rodríguez de Tembleque Solano, Luis Sáez Pérez, Andrés |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras |
Fecha de publicación | 2024-09 |
Fecha de depósito | 2024-09-10 |
Publicado en |
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Resumen | Flexoelectricity is the coupling between strain gradients and electric fields. This phenomenon can significantly
enhance piezocomposite response in addition to linear piezoelectricity. This enhancement is especially ... Flexoelectricity is the coupling between strain gradients and electric fields. This phenomenon can significantly enhance piezocomposite response in addition to linear piezoelectricity. This enhancement is especially important for lead-free piezocomposites, which generally underperform compared to lead-based counterparts. Flexoelectric enhancement is facilitated by structural anisotropy in piezocomposites. However, challenges in modeling flexoelectric effects arise from several unknowns. Firstly, the shear flexoelectric coefficient is not wellcharacterized experimentally. Secondly, significant discrepancies exist between theoretical predictions and experimental measurements of flexoelectric coefficients. Thirdly, the influence of matrix mechanical properties on flexoelectric behavior is poorly understood. To address these issues, we construct a parametric flexoelectric model of a lead-free piezocomposite with graded inclusion concentration. We then systematically analyze the impact of each parameter to identify which significantly influence flexoelectric behavior. This study is intended to provide direction to further experimental studies towards understanding and tailoring this subset of parameters |
Agencias financiadoras | Ministerio de Ciencia, Innovación y Universidades (MICIU). España Agencia Estatal de Investigación. España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | PID2022-137903OB-I00 |
Cita | Jagdish, A.K., Buroni, F.C., Melnik, R., Rodríguez-Tembleque, L. y Sáez, A. (2024). Flexoelectric anisotropy and shear contributions in lead-free piezocomposites. Mechanics Research Communications, 140, 104321. https://doi.org/10.1016/j.mechrescom.2024.104321. |
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