On the properties of dielectric elastomer actuators and their design implications
On the properties of dielectric elastomer actuators and their design implications
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DOI：
10.1088/0964-1726/16/2/s05
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发表时间：
2007-04
影响因子：
4.1
通讯作者：
J. Plante;S. Dubowsky
中科院分区：
文献类型：
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作者：
J. Plante;S. Dubowsky
介电弹性体致动器（DEA）已被广泛研究，在实验室条件下，他们已经显示出有前途的性能。然而，在实际应用中，它们并没有充分发挥其潜力。在这里，详细的分析和实验研究的故障模式和性能边界的DEA的结果编入这些致动器的设计原则。分析表明，由高粘弹性聚合物膜制成的DEA的性能由四个关键机制决定：拉入失效，介电强度失效，粘弹性和电流泄漏。设计图显示这四种机制在不同的工作条件下的性能的影响。这项研究表明，DEA的粘性性质是非常重要的性能/可靠性权衡。性能和可靠性的适当平衡是成功设计DEA的关键。
Dielectric elastomer actuators (DEA) have been studied extensively under laboratory conditions where they have shown promising performance. However, in practical applications, they have not achieved their full potential. Here, the results of detailed analytical and experimental studies of the failure modes and performance boundaries of DEAs are codified into design principles for these actuators. Analysis shows that the performance of DEAs made with highly viscoelastic polymer films is governed by four key mechanisms: pull-in failure, dielectric strength failure, viscoelasticity and current leakage. Design maps showing the effect of these four mechanisms on performance under varying working conditions are proposed. This study shows that the viscous nature of DEA is very important in their performance/reliability trade-offs. A proper balance of performance and reliability is key to successful design of DEAs.