Designing Cofired Multilayer Electrostrictive Actuators for Reliability
Designing Cofired Multilayer Electrostrictive Actuators for Reliability
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DOI：
10.1111/j.1151-2916.1989.tb06069.x
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发表时间：
1989-12
影响因子：
3.9
通讯作者：
S. Winzer;N. Shankar;A. Ritter
中科院分区：
文献类型：
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作者：
S. Winzer;N. Shankar;A. Ritter
多层电致伸缩致动器是大型电容器，其机械性能和电气性能都非常复杂。高工作场和恶劣的工作条件使得有必要预测和限制设备中产生的应力水平。开发并实现了电致伸缩器的三维本构模型，作为致动器的设计工具。电极几何形状和过渡层厚度对应力水平的影响已经建模，并且在高应力区域的失效与器件中缺陷（孔隙和分层）的存在相关。[关键词]电容器，电性能，应力，多层，建模]
Multilayer electrostrictive actuators are large capacitors with the added complexity of having to perform mechanically as well as electrically. High operating fields and severe operating conditions make it necessary to predict and limit stress levels generated in the device. A constitutive three-dimensional model for electrostrictors has been developed and implemented as a design tool for actuators. The effects of electrode geometry and transition-layer thickness on stress levels have been modeled and failure in high-stress regions has been correlated with the presence of flaws (pores and delaminations) in the devices. [Key words: capacitors, electrical properties, stress, multilayer, modeling.]