Computational Model of Hydrostatically Coupled Dielectric Elastomer Actuators
Computational Model of Hydrostatically Coupled Dielectric Elastomer Actuators
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DOI：
10.1115/1.4005885
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发表时间：
2012-05
期刊：
影响因子：
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通讯作者：
Huiming Wang;S. Cai;F. Carpi;Z. Suo
中科院分区：
文献类型：
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作者：
Huiming Wang;S. Cai;F. Carpi;Z. Suo
静压耦合介电弹性体 (HCDE) 执行器由两片介电弹性体膜组成，并用刚性圆环夹紧。限制在膜之间的是固定体积的流体，当施加电压或力时，该流体耦合两个膜的运动。本文提出了执行器的计算模型，假设膜是新胡克膜，能够进行大的轴对称变形。电压引起的变形由理想介电弹性体模型描述。通过将刚性平冲头压到其中一个膜的接触区域上来施加力。计算预测与实验数据非常吻合。该模型可用于探索 HCDE 执行器的非线性行为。 [DOI：10.1115/1.4005885]
A hydrostatically coupled dielectric elastomer (HCDE) actuator consists of two membranes of a dielectric elastomer, clamped with rigid circular rings. Confined between the membranes is a fixed volume of a fluid, which couples the movements of the two membranes when a voltage or a force is applied. This paper presents a computational model of the actuator, assuming that the membranes are neo-Hookean, capable of large and axisymmetric deformation. The voltage-induced deformation is described by the model of ideal dielectric elastomer. The force is applied by pressing a rigid flat punch onto one of the membranes over an area of contact. The computational predictions agree well with experimental data. The model can be used to explore nonlinear behavior of the HCDE actuators. [DOI: 10.1115/1.4005885]