Stacked dielectric elastomer actuator for tensile force transmission
Stacked dielectric elastomer actuator for tensile force transmission
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DOI：
10.1016/j.sna.2009.08.027
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发表时间：
2009-10-01
影响因子：
4.6
通讯作者：
Terrasi, G.
中科院分区：
文献类型：
--
作者：
Kovacs, G.;Duering, L.;Terrasi, G.
提出了一种由软介电活性聚合物(EAPs)驱动的主动结构的新方法，它可以在外部拉伸载荷下实现收缩位移。有源结构由等段阵列组成，其中电介质膜以堆叠的形式排列。所提出的主动结构在承受外部拉力的同时，具有单轴收缩变形的能力。有源段的串联布置在介质EAP膜层的厚度方向上具有一个收缩自由度。由于设想的张力传递能力，特别关注电极设计，这对于执行器的功能至关重要。基于纳米碳粉，提出了一种具有各向异性变形特性的柔性电极系统。在实验中，描述了几种不同结构的驱动器在外加拉载荷作用下的自由变形和收缩运动。其中包括研究不同大小和数量的堆叠薄膜层以及不同的电极设计。(C)2009爱思唯尔B.V.保留所有权利。
This paper presents a novel approach for active structures driven by soft dielectric electro-active polymers (EAPs), which can perform contractive displacements at external tensile load. The active structure is composed of an array of equal segments, where the dielectric films are arranged in a pile-up configuration. The proposed active structure has the capability of exhibiting uniaxial contractive deformations, while being exposed to external tensile forces. The serial arrangement of active segments has one contracting degree of freedom in the thickness direction of the dielectric EAP film layers.Due to the envisaged tension force transmission capability, special attention is paid to the electrode design which is of paramount importance with regard to functionality of the actuator. A compliant electrode system with anisotropic deformation properties is presented based on nano scale carbon powder. In experiments, the free deformation as well as the contractive motion under external tensile loading of several actuator configurations with different setups is characterized. These involve the study of various sizes and numbers of stacked film layers as well as different electrode designs. (C) 2009 Elsevier B.V. All rights reserved.