Article
Materials Science, Multidisciplinary
Xiao-Fang Zhang, Le Yang, Wen-An Jiang, Xing-Jian Jing, Li-Qun Chen
Summary: In this paper, a novel two-degree-of-freedom (TDOF) nonlinear energy harvester without internal resonance is proposed to achieve broadband harvesting characteristic. To demonstrate the performance, a TDOF nonlinear electromagnetic harvester is designed and analyzed using the harmonic balance method. The results show that the proposed harvester enhances the bandwidth of energy harvesting compared to conventional models.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2023)
Review
Engineering, Mechanical
Li-Qun Chen, Yimin Fan
Summary: Vibration-based energy harvesters (VEHs) utilize undesirable ambient vibrations to convert kinetic energy into electricity. Internal resonance, characterized by nonlinear modal couplings, has been extensively studied and applied in various fields. This review summarizes the utilization of internal resonance in VEHs, evaluates the performance of state-of-the-art devices, and provides guidance for future investigations.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Mechanical
M. Aravindan, S. Faruque Ali
Summary: Recent literature suggests that spectral characteristics of a harvester can be enhanced by invoking internal resonance between modes. This study analyzes the nonlinear dynamics and harvesting performance of a 1:3 internally resonant piezoelectric cantilever beam with a lumped mass under harmonic excitation. The results show that the higher mode invoked through internal resonance plays a significant role in broadband power generation.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Energy & Fuels
Hyo-Kyung Shim, Shuailing Sun, Hyun-Soo Kim, Dong-Gyu Lee, Yeon-Jeong Lee, Ji-Soo Jang, Kyung-Hoon Cho, Jeong Min Baik, Chong-Yun Kang, Yonggang Leng, Sunghoon Hur, Hyun-Cheol Song
Summary: A nonlinear piezoelectric energy harvester with a coupled beam array is designed to broaden bandwidth and improve energy harvesting performance. Experimental results show that the harvester outperforms traditional non-coupled multi-resonance harvester, with 144.2% higher output power and a 93.3% wider bandwidth in a certain frequency range. The harvester can be used in unstable or varying conditions.
Article
Thermodynamics
Bin Bao, Shaoyi Zhou, Quan Wang
Summary: The proposed structure demonstrated positive coupling effects between internal resonance and nonlinearity, resulting in a three times wider internal resonance bandwidth for energy harvesting in the x-direction compared to traditional systems. Additionally, the structure achieved an additional internal resonant frequency range (3.4 Hz-4.3 Hz) for enhancing energy harvesting performance in the z-direction. Experimental results showed a maximum power output of 0.64 mW at 7.5 Hz in the investigated frequency domain.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Zhemin Wang, Tianrun Li, Yu Du, Zhimiao Yan, Ting Tan
Summary: This paper presents a spring-based bistable energy harvester (SBEH) with two configurations (SBEHsup and SBEHsub) to achieve high working efficiency under different excitation levels through inter-well modulation. The nonlinear force generated by compressed springs broadens the effective bandwidth of the SBEH, while the SBEH-sub configuration utilizes magnetic force to dynamically alter the potential energy threshold, enhancing working performance under lower intensity excitation.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Automation & Control Systems
Ge Shi, Yinshui Xia, Yanmei Yang, Junfu Chen, Yansheng Peng, Huakang Xia, Xiudeng Wang, Libo Qian
Summary: This article introduces a broadband piezoelectric vibration energy harvesting system that actively adjusts its resonant frequency using a microstepper to regulate the position of the mass. It also presents a new method for online dynamic detection of the piezoelectric transducer's vibration status without additional sensors. Experimental results show that the system can efficiently self-power in a wide range of ambient vibration frequencies.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Mechanics
M. Serrano, K. Larkin, M. Ghommem, S. Tretiak, A. Abdelkefi
Summary: A multi-purpose energy harvesting microgyroscope system based on piezoelectric materials is proposed for small devices in remote areas. Numerical analysis shows that a system with a non-symmetric beam design is suitable for broadband energy harvesting. The nonlinear softening effects create a broadband frequency response with high voltage output, but careful selection of DC and AC voltages is necessary to avoid dynamic pull-in.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Mechanical
Yimin Fan, Mergen H. Ghayesh, Tien-Fu Lu
Summary: This research proposes a U-shaped vibration-based energy harvester with broadband and bidirectional features via an internal resonance. The device successfully transfers energy between two modes and exhibits high-efficient energy conversion through piezoelectric effects. It presents broadened resonance regions for both modes and can be excited in two orthogonal directions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Acoustics
Parisa Fatehi, Mojtaba Mahzoon, Mehrdad Farid, Hassan Parandvar
Summary: This study investigates the method of harvesting energy from a nonlinear functionally graded piezoelectric cantilever beam under harmonic excitation. The combined use of modal reduction and finite element methods reduces computational time, while the nonlinear modal reduction method estimates the unstable branches for frequency domain solution. A case study is conducted to analyze the effects of base amplitude values and material distribution on harvested power and bandwidth.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Mechanical
Saeed Lotfan
Summary: The article establishes a correspondence between multiple time scales (MTS) results and nonlinear system identification (NSI) method to identify nonlinear modal interactions in large amplitude vibrations of a coupled dynamical system. Energy exchange mechanisms and modal interactions are interpreted based on modal amplitudes extracted by the MTS method, and time-frequency analysis beside NSI is employed to detect modal interactions based on measured data.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Chemistry, Analytical
Siyang Hu, Ulrike Fitzer, Khai Chau Nguyen, Dennis Hohlfeld, Jan G. Korvink, Tamara Bechtold
Summary: In recent years, topology optimization has been proven to be the cutting-edge technology in mechanical structure design, while energy harvesting has gained significant attention in both research and industry. This work presents a novel topology optimization approach for a multi-resonant piezoelectric energy-harvester device, aiming to develop a broadband design that can generate constant power output over a range of frequencies, ensuring reliable operation under changing environmental conditions. The optimization results suggest a promising design with satisfactory frequency characteristics.
Article
Instruments & Instrumentation
Qiang Yan, Xianzhi Dai, Zhang Zhang, Lijun Wang, Yong Wang
Summary: This paper proposes a broadband vibration energy harvester based on nonlinear magnetic force and rotary pendulums. By utilizing magnetic nonlinearity, the working bandwidth of the harvester is improved. The mechanical-magnetic-electrical analytical model of the harvester is established, and the theoretical value obtained by the model is consistent with the experimental value. The results demonstrate that the harvester exhibits strong nonlinearity through magnetic force.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Mechanical
Oriel Shoshani, Steven W. Shaw
Summary: This paper explores the nonlinear interactions between vibration modes in micro- and nanoscale mechanical resonators, focusing on the regular, robust, and predictable dynamics. By using relatively simple two-mode models and combining model analysis with experimental observations, the paper supports suggestions for future research directions in the field.
NONLINEAR DYNAMICS
(2021)
Article
Energy & Fuels
Sallam A. Kouritem, Muath A. Bani-Hani, Mohamed Beshir, Mohamed M. Y. B. Elshabasy, Wael A. Altabey
Summary: This paper investigates a new energy harvesting device that utilizes Automatic Resonance Tuning (ART) technique to enhance energy harvesting mechanism. The research reveals that the bandwidth of the ART harvester is increased by 1130% compared to the fixed resonance energy harvester. The proposed broadband design provides a high-power density for energy harvesting.
