Electromechanical and dynamic analyses of tunable dielectric elastomer resonator
Electromechanical and dynamic analyses of tunable dielectric elastomer resonator
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可调谐介电弹性体谐振器的机电和动态分析
DOI：
10.1016/j.ijsolstr.2012.08.006
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发表时间：
2012-12-15
影响因子：
3.6
通讯作者：
Yang, Wei
中科院分区：
文献类型：
--
作者：
Li, Tiefeng;Qu, Shaoxing;Yang, Wei
当用作谐振器时，介电弹性体承受高频和非线性振荡。本研究聚焦于一种介电弹性体谐振器，其介电膜承受拉力和电压的组合载荷。当载荷为静态时，谐振器可能达到一种平衡状态。分析了在平衡状态附近作小振幅振荡的谐振器的稳定性和固有频率。当施加周期性电压时，该装置在多个激励频率下发生谐振。预拉伸和施加的静态电压可调节固有频率并改变谐振器的动态行为。膜可能会出现张力丧失和机电不稳定，导致谐振器失效。在驱动谐振器时，确定了防止失效的安全操作范围。（c）2012爱思唯尔有限公司。保留所有权利。
When used as resonators, dielectric elastomers are subjected to high frequencies and nonlinear oscillation. The present study is focused on a dielectric elastomer resonator whose dielectric membrane is subject to combined loads of tensile forces and voltages. When the loads are static, the resonator may reach a state of equilibrium. The stability and the natural frequency of the resonator with small-amplitude oscillation around the equilibrium state are analyzed. When a periodic voltage is applied, the device resonates at multiple frequencies of excitation. Pre-stretches and applied static voltages tune the natural frequency and modify the dynamic behavior of the resonator. The membrane may suffer loss of tension and electromechanical instability, causing the failure of the resonator. Safe operation range is identified for failure prevention while actuating the resonator. (c) 2012 Elsevier Ltd. All rights reserved.