基于铁电陶瓷的RAINBOW元件是一种具有内部应力偏移,含有还原层,并有特殊结构的大位移铁电驱动器.本文通过力学方法分析了其应力分布状态,并建立了相应的有限元模型.结果表明,两种分析方法得到了相同的规律,即还原层厚度比率为1/3时元件内部的应力状态最优,有利于获得最大的电场诱导位移.
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