• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Electroactive Polymer Actuators and Devices(EAPAD) >Cylindrical Dielectric Elastomer Actuators Reinforced with Inextensible Fibers
【24h】

Cylindrical Dielectric Elastomer Actuators Reinforced with Inextensible Fibers

机译：不可拉伸纤维增强的圆柱形介电弹性体致动器

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel actuator configurations for various applications can be obtained using cylindrical dielectric elastomer actuators. A new configuration for a contractile electro-elastomer is presented here for the first time. A cylindrical or tubular configuration is used to realize simultaneous axial shortening and radial expansion when a voltage is applied across the thickness of the hollow cylinder. In this configuration, the inner and outer surfaces of a cylindrical dielectric elastomer are coated with compliant electrodes. The outer cylindrical surface is then enclosed by a network of helical fibers that are very thin, very flexible and inextensible. Fiber networks or cord families are commonly used in many different materials and for a variety of applications. The primary purpose of these networks is structural, that is to say, for reinforcement. The composite active structure proposed here is reminiscent of the McKibben actuator, a pneumatically actuated cylindrical construct consisting of a flexible rubber bladder sheathed in a fiber network, which garners its impressive contracting force from the inextensible fibers that prevent axial extension when an inflation pressure is applied to the internal bladder. The system is modeled using an electro-elastic formulation derived from the large deformation theory of reinforced cylinders. The model combines Maxwell-Faraday electrostatics and nonlinear elasticity theory. Illustratively, solutions are obtained assuming a Mooney-Rivlin material model for a silicone actuator. The results indicate that the relationship between the axial contraction force and the axial shortening is linear for the voltage range considered. The importance of other system parameters such as the fiber angle and the applied constant pressure is also reported.
机译：使用圆柱形介电弹性体执行器可以获得适用于各种应用的新型执行器配置。此处首次提出了一种收缩型弹性体的新配置。当在中空圆柱体的整个厚度上施加电压时，圆柱或管状构造用于同时实现轴向缩短和径向膨胀。在这种构造中，圆柱形介电弹性体的内表面和外表面涂覆有顺应性电极。然后，圆柱形的外表面被非常细，非常柔韧且不可延伸的螺旋形纤维网包围。光纤网络或软线系列通常用于许多不同的材料中，并用于多种应用。这些网络的主要目的是结构性的，也就是说，是为了增强。此处提出的复合主动结构让人想起McKibben促动器，这是一种气动促动的圆柱形结构，由包裹在纤维网络中的柔性橡胶囊组成，该组件从不可拉伸的纤维中获得了令人印象深刻的收缩力，可防止在施加充气压力时轴向伸长到内部膀胱。该系统使用源自弹性圆柱体大变形理论的电弹性公式建模。该模型结合了麦克斯韦-法拉第静电学和非线性弹性理论。说明性地，假设有机硅致动器的门尼-里夫林材料模型获得解决方案。结果表明，在考虑的电压范围内，轴向收缩力和轴向缩短之间的关系是线性的。还报告了其他系统参数（如纤维角度和施加的恒定压力）的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号