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首页> 外文期刊>International journal of mechanics and materials in design >A dielectric elastomer membrane integrated with protective passive layers under explicit and implicit prestretch
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A dielectric elastomer membrane integrated with protective passive layers under explicit and implicit prestretch

机译：一种介电弹性体膜，其与明确和隐式PRESTRECH的防护无源层集成

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Dielectric elastomers (DEs) are a category of soft electro-active materials that can be used as sensors, actuators and generators. In order to provide protection, insulation layers are essential and thicker layers can lead to stronger protecion. However, the presence of the additional layers can certainly constrain the deformation of DEs. Thus a balance between protection and performance is needed. Prestretch is widely used for the enhancement of actuation performance. Thus the DE membrane integrated with protective passive layers is studied here, focusing on the effect of the coexistence of the prestretch and passive layers. We identify two approaches of prestretches, where the DE membrane and protective passive layers can be explicitly prestretched by external loads, or the DE membrane can be implicitly prestretched by solely protective passive layers. For the latter approach, it does not require additional components such as rigid clamps or dead weights. We then establish a coupled model for the DE membrane and passive layers. The effects of the prestretches and passive layers on the electromechanical behavior and voltage-induced deformation of the DE membrane are then revealed numerically. Furthermore, we theoretically study the detailed effects of specific mechanical properties of passive layers such as the thickness and shear modulus, which are useful for the design of the system. This theoretical research thus sheds insights for the design of dielectric elastomer applications where both safety and performance are required.
机译：介电弹性体（DES）是一种软电活性材料，可用作传感器，执行器和发电机。为了提供保护，绝缘层是必不可少的，层较厚的层可以导致更强的邮政。然而，附加层的存在肯定可以限制DES的变形。因此，需要保护和性能之间的平衡。 PRESTRETCH广泛用于增强致动性能。因此，这里研究了与保护型无源层的DE膜集成，聚焦了PRESTRECH和被动层的共存的效果。我们鉴定了两种朊病毒方法，其中可以通过外部载荷明确地捕获DE膜和保护无源层，或者可以通过仅通过保护的无源层暗示DE膜。对于后一种方法，它不需要额外的部件，例如刚性夹具或止返砝码。然后，我们建立用于DE膜和被动层的耦合模型。然后在数值上揭示了诸如DE膜的机电行为和电压诱导变形的螯合物和被动层的效果。此外，理论上，从理论上研究了无源层的特定机械性能的详细效果，例如厚度和剪切模量，这对于系统的设计是有用的。因此，该理论研究因此揭示了介电弹性体应用设计，其中需要安全性和性能。

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