Continuum vibration analysis of dielectric elastomer membranes
Continuum vibration analysis of dielectric elastomer membranes
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介电弹性体膜的连续振动分析
DOI：
10.1117/12.2258609
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. Seelecke
中科院分区：
文献类型：
--
作者：
S. Nalbach;G. Rizzello;S. Seelecke
介质弹性体(DE)换能器以其响应相对较大的激励应变(通常大于100%)的施加电压的可能性以及相对较高的激励带宽(数量级为几kHz)而闻名。然而，到目前为止，使用DES动态行为的应用相对较少。一些相关的例子包括扬声器和液体分配器。基于DES在高频应用中的潜力，这项工作的目的是研究电驱动DE膜时观察到的连续振动。所分析的系统由预加有弹簧的圆形DE膜组成。在用高电压、高频信号激励DE膜驱动器的同时，利用三维激光测振仪检测膜的运动，利用多普勒效应重建系统的频谱和振动模式。通过大量的实验研究了膜的几何形状和预应力等参数对膜的频谱和振型的影响。
Dielectric Elastomer (DE) transducers are well known for the possibility of responding to an applied voltage with relatively large actuation strains, often larger than 100%, and for their relatively high actuation bandwidth (order of several kHz). However, up to date there are relatively few applications which use the dynamic behavior of DEs. Some relevant examples include loudspeakers and fluid dispensers. Motivated by the potentialities of DEs in high-frequency applications, the aim of this work is the investigation of the continuous vibrations observed when DE membranes are actuated electrically. The system under analysis consists of a circular DE membrane pre-loaded with a spring. While exciting the DE membrane actuator with high-voltage, high-frequency signals, the motion of the membrane is detected with a 3D laser vibrometer which uses Doppler effect to reconstruct the system spectrum and vibration modes. An extensive experimental investigation is performed to study the influence of system parameters, such as membrane geometry and pre-stress, on the membrane frequency spectrum and vibrational modes.
用于介电弹性体多层堆栈传感器的自感知算法
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Thorben Hoffstadt;J. Maas
通讯作者：
J. Maas