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Modeling of Poling Behavior of Ferroelectric 3-3 Composites
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Modeling of Poling Behavior of Ferroelectric 3-3 Composites
- 发表刊物：
- International Journal of Engineering Science
- 摘要：
- Piezoelectric 3–3 composites are often prepared from unpoled PZT ceramics and polymer matrices. During
the poling process the PZT cannot deform freely due to the clamping by the surrounding polymer,
which after poling results in the occurrence of residual mechanical stress in the composite. Based on the
multi-linear constitutive model of ferroelectric and ferroelastic piezoceramics, a nonlinear finite element
analysis was performed within the representative volume element to model the poling behavior of this kind
of composites, in which appropriate periodic boundary conditions were prescribed for the displacements
and the electric field of the composites. Considering the fact from experimental data that changes of the
remanent strain induced by the switching process are volume preserving, we introduced different criteria
in evaluating the maximum and minimum values of the ferroelastic strain Sf. A numerical simulation
was then conducted to investigate the effects of different poling voltages and volume fractions of the
PZT ceramic on the distribution of residual mechanical stress in the PZT of composites. The results show
that if Vf < 18% a portion of the compressive mechanical stress in the poling direction on the PZT ceramic
may cause a mechanical depolarization of the PZT ceramic.
- 合写作者：
- HY Zhang, LX Li et al
- 卷号：
- 43, 13-14 (2005)
- 页面范围：
- 1138-1156
- 是否译文：
- 否
- 发表时间：
- 2005-10-05
