Details
| Original language | English |
|---|---|
| Pages (from-to) | 2183-2202 |
| Number of pages | 20 |
| Journal | Nonlinear dynamics |
| Volume | 111 |
| Issue number | 3 |
| Publication status | Published - Feb 2023 |
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.
Keywords
- Cubic Perovskite, Dynamic flexoelectric effect, Energy harvesting, Large rotation/geometric nonlinearity, Micro inertial effect, Size dependent piezoelectricity/flexoelectricity, Strain gradient elasticity/couple stress theory
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Nonlinear dynamics, Vol. 111, No. 3, 02.2023, p. 2183-2202.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - An electro-mechanical dynamic model for flexoelectric energy harvesters
AU - Thai, Tran Quoc
AU - Zhuang, Xiaoying
AU - Rabczuk, Timon
N1 - Funding Information: The authors would like to thank the financial support of ERC Starting Grant (802205) and Heisenberg-Programme from DFG (ZH 459/5-1). The authors would like to thank the financial support of RISE-BESTOFRAC (734379) of Horizon 2020.
PY - 2023/2
Y1 - 2023/2
N2 - 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.
AB - 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.
KW - Cubic Perovskite
KW - Dynamic flexoelectric effect
KW - Energy harvesting
KW - Large rotation/geometric nonlinearity
KW - Micro inertial effect
KW - Size dependent piezoelectricity/flexoelectricity
KW - Strain gradient elasticity/couple stress theory
UR - http://www.scopus.com/inward/record.url?scp=85139627722&partnerID=8YFLogxK
U2 - 10.1007/s11071-022-07928-z
DO - 10.1007/s11071-022-07928-z
M3 - Article
AN - SCOPUS:85139627722
VL - 111
SP - 2183
EP - 2202
JO - Nonlinear dynamics
JF - Nonlinear dynamics
SN - 0924-090X
IS - 3
ER -