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由于电活性聚合物材料在电场作用下所表现出的许多独特的力电性能,如大应变、响应快、高能量转换率等特点,使得这种高分子智能材料引起了广泛关注,已被加工成作动器、传感器及俘能器等能量转换器,有望在工程领域发挥巨大作用.论文针对美国人工肌肉公司(Artificial Muscle Inc.)开发的一款电活性聚合物介电薄膜作动器的优化设计开展研究,主要研究了在外加力电载荷作用下,当薄膜发生面外轴对称大变形时,不同初始预拉伸即设计参数对薄膜厚度、拉伸变形、应力及薄膜中电场强度等的影响效应.该薄膜作动器有三个设计参数,结果表明,通过优化设计参数,在设计参数的某一组合下,薄膜的厚度、薄膜中的电场分布将趋于均匀,而薄膜的拉伸变形、应力并未呈现类似的均匀性.本文所提供的研究方法,可为此类作动器的优化设计提供基本的分析模式.
Due to the unique properties of electro-active polymer materials such as large strain, fast response and high energy conversion rate under the action of electric field, this kind of polymer intelligent material has attracted much attention and has been processed Energy converters such as actuator, sensor and captor are expected to play an important role in the field of engineering.In this paper, an electroactive polymer dielectric film actuator developed by Artificial Muscle Inc. In this paper, the optimal design is studied. The influence of different initial pre-stretching parameters, such as design parameters on the film thickness, tensile deformation, stress and the electric field strength in the film The results show that the thickness of the film and the distribution of the electric field in the film tend to be uniform by optimizing the design parameters, Deformation and stress do not show similar uniformity.The research methods provided in this paper can provide the basic analysis mode for the optimal design of such actuators.