Nonlinear dynamics of curved IPMC actuators undergoing electrically driven large deformations
作者机构：School of MechanicalAerospace and Systems EngineeringKorea Advanced Institute of Science and Technology291 Daehak-roYuseong-guDaejeon 305-701Republic of Korea
出 版 物：《International Journal of Smart and Nano Materials》 (国际智能和纳米材料杂志（英文）)
年 卷 期：2012年第3卷第3期
页 面：214-225页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：ionic polymer-metal composite snap-through dynamics thermal treatment actuator
摘 要：The nonlinear dynamics of curved ionic polymer-metal composite(IPMC)actuators having large tip displacement and periodical jumping locomotion was investigated *** snap-through phenomena,the actuator generates much larger tip displacement and shows abrupt jumps in the transitions of upswings and downswings with low input *** curved IPMC cantilever actuators having two different constant curvatures of 0.01 mm^(−1) and 0.02 mm^(−1) were fabricated through thermal treatment from flat IPMCs,simultaneously with no residual ***-fabricated IPMC actuators were tested to evaluate the effect of initial curvature under static and dynamic electrical *** the case of the flat IPMC actuator,asymmetric characteristics in step and harmonic responses were investigated in the curved IPMC ***,at relatively higher input voltage,snap-through phenomena were observed with much larger transverse displacements and periodical abrupt jumps of the instant *** revealed jumping movements between the multiple equilibrium *** results show that optimum curvatures for better bending performance of curved cantilever IPMCs exist and that this snap-through mechanism could be applied to IPMC actuators by considering their soft and flexible properties and the geometric structures.
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