Electromechanical stability of cone dielectric elastomer actuator

摘要：

　　Dielectric elastomer actuators are susceptible to electromechanical instability,limiting operational voltages and attainable deformations.In this work,electromechanical stability is investigated at the example of a cone dielectric elastomer actuator.Under the preload and applied voltage,deformation of cone actuator is inhomogeneous.The electromechanical instability occurs when the Hessian of free-energy function of anyone particle in the membrane ceases to be positive definite.Critical voltage of the membrane decreases as the preload increases.The critical actuation stretches are proportional to the critical voltages.As the prestretch increases,the critical voltage decreases while the critical true electric field increases.These results can be used to guide the design of cone actuator.

关键词： dielectric elastomer actuator electromechanical instability inhomogeneous deformation

作者: Xiaohong Wu Wenjie Sun Meier Li Jinxiong Zhou

作者单位: State Key Laboratory for Strength and Vibration of Mechanical Structures and School of Aerospace,Xian Jiaotong University,Xian 710049,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）