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Dynamic analysis of piezoelectric-solid-liquid coupled system of micro nebulizer

机译:微型雾化器压电-固液耦合系统的动力学分析

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摘要

Piezoelectric micro nebulizer is a typical piezoelectric-solid-liquid coupling problem. A 2D FEM model was presented for this system. Numerical results show that when the piezoelectric actuator is vibrated, nozzle film also is generated vibration, and the phase relationship occurs to them, and the operation at the second resonance frequency is more desirable than others. A good agreement between experimental results and theoretical results confirmed the validity of the theoretical model we developed. Therefore, the design of micro nebulizer to consider only the amplitude of piezoelectric vibration is not comprehensive, we must also consider the nozzle film vibration, as well as the phase between the back film and the nozzle film, and this can provide guidance for the optimal design of micro nebulizer.
机译:压电微雾化器是一个典型的压电-固-液耦合问题。为此系统提出了一个二维有限元模型。数值结果表明,当压电致动器振动时,喷嘴膜也产生振动,并且它们之间发生相位关系,并且在第二谐振频率下的操作比其他操作更可取。实验结果与理论结果之间的良好一致性证实了我们开发的理论模型的有效性。因此,在微雾化器的设计中仅考虑压电振动的幅度是不全面的,还必须考虑喷嘴膜的振动以及背膜与喷嘴膜之间的相位,这可以为优化设计提供指导。微型雾化器的设计。

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