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contributor authorYvonnet, J.
contributor authorChen, X.
contributor authorSharma, P.
date accessioned2022-02-04T23:01:28Z
date available2022-02-04T23:01:28Z
date copyright11/1/2020 12:00:00 AM
date issued2020
identifier issn0021-8936
identifier otherjam_87_11_111003.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4275934
description abstractRecent work has highlighted how the phenomenon of flexoelectricity can masquerade as piezoelectricity. This notion can not only be exploited to create artificial piezoelectric-like materials without using piezoelectric materials but may also explain measurement artifacts in dielectrics. In this article, we show that the reverse is also possible and potentially advantageous in certain situations (such as energy harvesting). By constructing a computational homogenization approach predicated on the finite element method, we argue that composites made of piezoelectric phases can conspire to endow the material with a distinct overall flexoelectric-like response even though the native flexoelectricity of the constituent materials is negligible. Full finite element procedures for numerical evaluation of the different effective tensors, including the flexoelectric tensor, are provided. Numerical investigations are conducted, showing variation of the effective flexoelectric properties with respect to local geometry and properties of the composite in piezoelectric–piezoelectric and polymer–piezoelectric composites. We find that the flexoelectric response can be tuned to nearly five times higher than the constituents.
publisherThe American Society of Mechanical Engineers (ASME)
titleApparent Flexoelectricity Due to Heterogeneous Piezoelectricity
typeJournal Paper
journal volume87
journal issue11
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.4047981
journal fristpage0111003-1
journal lastpage0111003-10
page10
treeJournal of Applied Mechanics:;2020:;volume( 087 ):;issue: 011
contenttypeFulltext


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