带屈曲梁的双稳介质弹性体作动器设计与分析

Nianfeng F. Wang, Chaoyu Cui, Bicheng Chen, Xianmin Zhang
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引用次数: 1

摘要

介电弹性体作动器是一种新兴的软作动器,具有柔性、大应变、高能量密度等特点。双稳机构在其运动范围内具有两个无力稳定的平衡位置,可以在不消耗能量的情况下保持较长时间。本文提出了一种由一个十字形屈曲梁和两个锥形介电弹性体作动器组成的双稳系统设计方案。建立了分析介电弹性体机电耦合行为和十字形屈曲梁的力-位移关系的解析模型。从力平衡法和系统内能的角度解释了双稳态圆锥dea的工作原理。设计了一种开关力为0.05 N、行程为5.65 mm的双稳态介质弹性体作动器,验证了锥形DEAs、预压缩双稳态十字形梁的解析模型和设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and Analysis of Bistable Dielectric Elastomer Actuator with Buckling Beam
Dielectric elastomer actuators (DEAs) is an emerging soft actuator with attributes of flexibility, large strain, and high energy density. Bistable mechanisms have two force-free stable equilibrium positions in their range of motion, which can hold for a long time without energy consumption. In the present work, a design of bistable system is proposed, consisting of a cross-like shape buckling beam and two conical dielectric elastomer actuators. Analytical model has been developed to analyze the electromechanical coupling behavior of dielectric elastomer and the force-displacement relationship of the cross-like shape buckling beam. The working principle of the bistable conical DEAs is explained in terms of force equilibrium method and internal energy of the system. A bistable dielectric elastomer actuator with a switching force of 0.05 N and a stroke of 5.65 mm is developed to validate the analytical model of the conical DEAs, pre-compressed bistable cross-like beam, and the design.
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