000207035 001__ 207035
000207035 005__ 20190317000138.0
000207035 0247_ $$2doi$$a10.1016/j.eml.2015.04.001
000207035 037__ $$aARTICLE
000207035 245__ $$aMaximizing the displacement of compact planar dielectric elastomer actuators
000207035 269__ $$a2015
000207035 260__ $$c2015
000207035 336__ $$aJournal Articles
000207035 520__ $$aWe present a model and its experimental validation for the optimization of the in-plane displacement of a rigid platform mounted on a compact dielectric elastomer actuator. Unlike the situation in which the mechanical prestretch of the membrane is maintained by a dead load (which leads to the highest strain, but is unsuitable for most practical applications), we study here the case in which the dielectric membrane is stretched on a frame, with the passive zones of the membrane acting as non-linear springs, thus avoiding external weights or springs, hence allowing for a compact and simple device. We demonstrate how to maximize the displacement of the platform relative to the overall size of the device by optimum choice of membrane prestretch and electrode geometry. In particular, we show that using a passive membrane decreases the maximum displacement of the platform by a factor of 2 compared to constant-force case. However, this loss can be compensated by using bidirectional actuation, with electrodes on both sides of the platform (one side at a time serving as the passive membrane). The differences between the idealised situation of the model and manufacturable devices are discussed and validated by finite element model simulations and experimental measurements.
000207035 700__ $$0241188$$g127048$$aRosset, Samuel
000207035 700__ $$0246642$$g229311$$aAraromi, Seun
000207035 700__ $$0240376$$g162368$$aShea, Herbert
000207035 773__ $$j3$$tExtreme Mechanics Letters$$q72-81
000207035 8564_ $$uhttps://infoscience.epfl.ch/record/207035/files/in-plane.pdf$$zPostprint$$s5022430$$yPostprint
000207035 8564_ $$uhttps://infoscience.epfl.ch/record/207035/files/rosset_EML_2015.pdf$$zPublisher's version$$s1527112$$yPublisher's version
000207035 909C0 $$xU10955$$0252107$$pLMTS
000207035 909CO $$qGLOBAL_SET$$pSTI$$ooai:infoscience.tind.io:207035$$particle
000207035 917Z8 $$x127048
000207035 917Z8 $$x127048
000207035 917Z8 $$x127048
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000207035 937__ $$aEPFL-ARTICLE-207035
000207035 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000207035 980__ $$aARTICLE