Effect of substrate to piezoceramic layer thickness ratio on the performance of a C-shape piezoelectric actuator
Effect of substrate to piezoceramic layer thickness ratio on the performance of a C-shape piezoelectric actuator
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DOI：
10.1016/j.sna.2007.07.031
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发表时间：
2008-01
影响因子：
4.6
通讯作者：
A. N. Mtawa;Bohua Sun;J. Gryzagoridis
中科院分区：
文献类型：
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作者：
A. N. Mtawa;Bohua Sun;J. Gryzagoridis
研究了压电陶瓷层与基片厚度比对C型驱动器位移和力输出的影响。基片/PZT层厚比是优化C型驱动器性能的参数之一。实验和有限元软件（MSC Marc）用于验证的理论结果。结果表明，在压电陶瓷层厚度固定的情况下，可以改变基底层的厚度，从而改变基底层的刚度，以获得一定范围的位移和力的值。随着基板厚度的增加，自由位移达到一个最大值，然后减小。这种行为的可能原因进行了讨论。这些信息对于设计人员来说是一个有用的指南，可以根据主要要求是大的力还是大的位移来选择C形致动器的适当材料和几何形状。当决定串联或并联的单个C形致动器的所需数量时，该信息也是有用的。
This paper is focused on the influence of the thickness ratio between substrate and piezoceramic layers on the displacement and force output of a C-shape actuator. The ratio of substrate/PZT layers thickness is one of the parameters that can be used for the optimization of performance of a C-shape actuator. Experimental and Finite Element software (MSC Marc) was used for validation of the theoretical results. The results show that with a fixed piezoceramic layer thickness, the thickness, hence the stiffness of the substrate layer can be varied to obtain a range of values of displacement and force. With increasing thickness of substrate, the free displacement reaches a maximum value after which it decreases. The possible causes for this behaviour are discussed. This information is a useful guide to designers enabling the selection of appropriate material and geometry for a C-shape actuator, depending on whether the primary requirement is large force or large displacement. The information is also useful when deciding on the required number of individual C-shape actuators in series or parallel.