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Flexoelectricity and apparent piezoelectricity of a pantographic micro-bar

Abstract : We discuss a homogenized model of a pantographic bar considering flexoelectricity. A pantographic bar consists of relatively stiff small bars connected by small soft flexoelectric pivots. As a result, an elongation of the bar relates almost to the torsion of pivots. Taking into account their flexoelectric properties we find the corresponding electric polarization. As a results, the homogenized pantographic bar demonstrates piezoelectric properties inherited from the flexoelectric properties of pivots. The effective stiffness properties of the homogenized bars are determined by the geometry of the structural elements and shear stiffness whereas the piezoelectric properties follow from the flexoelectric moduli of the pivots.
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https://hal.univ-lorraine.fr/hal-03283875
Contributor : Jean-François GANGHOFFER Connect in order to contact the contributor
Submitted on : Monday, July 12, 2021 - 11:37:53 AM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM

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Victor Eremeyev, Jean-François Ganghoffer, Violetta Konopińska-Zmysłowska, Nikolay Uglov. Flexoelectricity and apparent piezoelectricity of a pantographic micro-bar. International Journal of Engineering Science, Elsevier, 2020, 149, pp.103213. ⟨10.1016/j.ijengsci.2020.103213⟩. ⟨hal-03283875⟩

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