An electro-mechanical dynamic model for flexoelectric energy harvesters
Abstract
Flexoelectricity is a universal electro-mechanical coupling effect that occurs in dielectrics of all symmetric groups and becomes dominant at the micro- and nano-scales. It plays an important role in evaluating micro-electro-mechanical systems (MEMS) such as energy harvesters which convert vibrational energy to electric energy. At finer length scales, micro-inertia effects significantly contribute to the behavior of flexoelectric materials due to the mechanical dispersion. Hence, to properly characterize the vibrational behavior of MEMS, a reliable theoretical approach is required accounting for all possible phenomena that affect the output of the system such as voltage or power density. In this work, we present a consistent (dynamic) model and associated computational framework for flexoelectric structures to study the characteristics of the vibrational behavior of energy harvesters showing the dominance of the flexoelectric effect at micro- and nano-scales. In this context, we quantify the impact of the micro-inertia length scale and the flexoelectric dynamic parameter on both frequency and time responses of energy harvesters.
Details
- Organisationseinheit(en)
-
Institut für Photonik
- Externe Organisation(en)
-
Tongji University
Bauhaus-Universität Weimar
- Typ
- Artikel
- Journal
- Nonlinear dynamics
- Band
- 111
- Seiten
- 2183-2202
- Anzahl der Seiten
- 20
- ISSN
- 0924-090X
- Publikationsdatum
- 02.2023
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Steuerungs- und Systemtechnik, Luft- und Raumfahrttechnik, Meerestechnik, Maschinenbau, Angewandte Mathematik, Elektrotechnik und Elektronik
- Elektronische Version(en)
-
https://doi.org/10.1007/s11071-022-07928-z (Zugang:
Offen
)
