主动与被动比对圆形介电弹性体执行器变形的影响
Markus Koenigsdorff1, Hans Liebscher1, Petr Osipov1
1Institute of Solid-State Electronics, Faculty of Electrical and Computer Engineering, TUD Dresden University of Technology, Mommsenstraße 15, 01069 Dresden, Germany.
Micromachines
|January 23, 2024
概括
改进介电弹性体执行器 (DEAs) 需要了解电极尺寸如何影响性能. 这项研究量化了主动与被动的比率,表明50%的辐射覆盖率最大化了位移,提高了模型的准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 聚合物科学 聚合物科学
背景情况:
- 介电弹性体执行器 (DEAs) 对先进技术至关重要,需要改进材料和表征方法.
- 目前的DEA表征通常涉及具有预拉伸膜的圆形执行器,其中电极大小显著影响性能.
- 量化电极大小的影响对于跨研究一致和可比的实验结果至关重要.
研究的目的:
- 调查和量化主动与被动比率 (相对于尺寸的电极大小) 对DEA性能的影响.
- 开发和比较循环DEA的简化分析模型,考虑超弹性和线性弹性特性.
- 用实验数据验证分析结果,并确定最佳的电极尺寸以进行准确的表征.
主要方法:
- 开发两个循环DEA的简化分析模型:一个超弹性和一个线性弹性一次性参数模型.
- 模型预测与从膜执行器获得的实验数据的比较.
- 放射性主动与被动比率的系统变化,以评估其对电活性应变和位移的影响.
主要成果:
- 这两种分析模型都准确地预测了DEA的行为,并且显示了辐射活性-被动比率和电活性应变之间的显著线性关系.
- 约50%的辐射覆盖率被认为是最佳的,最大限度地提高了执行器位移.
- 电极大小被发现是关键参数,有时对模型准确性比材料的超弹性特性更有影响.
结论:
- 辐射主动与被动比率是DEA实验设计和性能分析的关键参数.
- 约50%的最佳辐射覆盖率最大化了位移,并提高了分析模型的可靠性.
- 准确地描述DEA需要仔细考虑和量化电极尺寸效应.
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