Article
Thermodynamics
Yimin Fan, Mergen H. Ghayesh, Tien-Fu Lu
Summary: This paper presents a wideband two-element piezoelectric energy harvester with both bistability and parametric resonance characteristics, achieving high-energy conversion through magnetic coupling effects. Theoretical modelling and experimental verification of the system dynamics are conducted to illustrate the flexibilities and limitations of the device.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Civil
Chaoran Liu, Wei Zhang, Kaiping Yu, Baopeng Liao, Rui Zhao, Tao Liu
Summary: This paper proposes a compact two-degree-of-freedom (2DOF) bistable piezoelectric energy harvester with a simple structure. The swinging mass-bar possesses bistable property, allowing for large force and moment on the piezoelectric cantilever beam. The experimental prototype demonstrates high electrical output in the low-frequency range, validating its broadband energy harvesting capability.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
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
Chemistry, Multidisciplinary
Qiong Wu, Hairui Zhang, Jie Lian, Wei Zhao, Shijie Zhou, Xilu Zhao
Summary: The study proposes a bistable vibration system for harvesting low-frequency renewable energy, showing that stochastic resonance phenomena can be reliably activated in a random wave environment and large-scale bistable responses can be generated after receiving input signals.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Hongchun Luo, Jiayi Liu, Tao Yang, Yongqi Zhang, Qingjie Cao
Summary: This study proposes a dipteran flight-inspired bistable triboelectric nanogenerator (DFIB-TENG) for harvesting low-frequency vibration energy. Experimental results show that the DFIB-TENG has high energy output in a specific range of excitation frequency, amplitude, and link length.
Article
Chemistry, Physical
Dongguo Tan, Jiaxi Zhou, Kai Wang, Xuhui Zhao, Qiang Wang, Daolin Xu
Summary: Triboelectric nanogenerators (TENGs) are promising devices for converting low-frequency vibration energy into electrical energy efficiently. The bow-type TENG, with bistable stiffness feature, successfully solves the challenge of harvesting energy from low-frequency ambient vibrations.
Article
Engineering, Mechanical
Wei Chen, Jiliang Mo, Huajiang Ouyang, Zaiyu Xiang, Jing Zhao
Summary: A bistable energy harvester in a friction system is modeled and numerically investigated. The study reveals that the vibration pattern of the energy harvester can be very complex under the influence of loading force and belt velocity, exhibiting various behaviors such as quasi-periodic, chaotic, and periodic oscillations.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Mechanical
David Gibus, Pierre Gasnier, Adrien Morel, Nicolas Garraud, Adrien Badel
Summary: This paper investigates the use of piezoelectric vibration harvesters with strong electromechanical coupling coefficients, and presents a nonlinear model to consider losses, demonstrating that neglecting nonlinear losses can lead to an overestimation of harvested power.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Shitong Fang, Keyu Chen, Juntong Xing, Shengxi Zhou, Wei-Hsin Liao
Summary: This paper proposes a tuned bistable nonlinear energy sink (TBNES) to simultaneously improve vibration suppression and energy harvesting performance, as well as extend the operating amplitude range to low-level excitations. Through optimization of system parameters, TBNES outperforms the typical bistable nonlinear energy sink (BNES) in both vibration suppression and energy harvesting.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Dongguo Tan, Jiaxi Zhou, Kai Wang, Huajiang Ouyang, Huai Zhao, Daolin Xu
Summary: This study proposes a novel sliding-impact bistable TENG (SIBTENG) for energy harvesting from low-frequency intrawell oscillation. The impact-mode structure significantly enhances energy harvesting from intrawell oscillation, resulting in a 100% improvement in output power compared to the traditional SBTENG. Experimental results confirm the effectiveness of the design concept.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Nan Shao, Jiawen Xu, Xiaosu Xu
Summary: This paper presents a two-degree-of-freedom piezoelectric energy harvesting system with a stopper for wideband operation. By optimizing the parameters, the frequency responses of the resonant peaks can be widened and a large amplitude voltage output can be achieved. It is demonstrated that arranging the stopper at the free end of the inner beam yields better performance.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Energy & Fuels
Zhemin Wang, Yu Du, Tianrun Li, Zhimiao Yan, Ting Tan
Summary: The flute-inspired mechanical-intelligent vibration energy harvester proposed in this study achieves broadband, high-efficiency vibration energy harvesting through self-tuning and self-locking mechanisms. Compared with its linear counterpart, this harvester demonstrates a significant improvement in working bandwidth and power.
Article
Engineering, Mechanical
R. Naseer, A. Abdelkefi
Summary: This study investigates the performance of a magnetoelastic multi-stability energy harvester in monostable and bistable configurations under a combination of vortex-induced vibration (VIV) and base excitation. A mathematical model is developed, and linear and nonlinear analyses are performed to study the effects of various factors on the harvester's response. Parametric studies are conducted to explore the impacts of different variables. The study provides valuable insights into the design and performance of energy harvesters in different configurations and operating conditions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Physics, Applied
Houfan Du, Zhichun Yang, Shengxi Zhou
Summary: This paper proposes a novel piezoelectric buckling beam-type bistable energy harvester (PBBEH) that efficiently harvests energy from rotational motions. The PBBEH consists mainly of a piezoelectric buckling beam and a rotational disk for low-speed rotational motions. Numerical analysis using a lumped parameter model demonstrates the energy harvesting features of the PBBEH. Experimental results indicate excellent energy harvesting performance in the frequency range of 1-9 Hz, with an output power of 28 μW. The PBBEH exhibits obvious nonlinear broadband dynamic characteristics, with the output power curve showing an increasing and then decreasing tendency.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Thermodynamics
Zehao Hou, Wenyu Zha, Hongbo Wang, Wei-Hsin Liao, Chris R. Bowen, Junyi Cao
Summary: Inspired by the dynamics of noninertial systems, a novel bistable energy harvesting backpack is proposed to improve biomechanical energy harvesting performance. The backpack uses a change in spring torque direction to achieve bistability. A detailed model is developed to analyze the influence of backpack mass on symmetry, bifurcation frequency, and amplitude of oscillation. Comparison with a traditional linear backpack shows that the new bistable design exhibits improved frequency bandwidth and harvesting performance.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Mechanics
Ge Yan, Hong-Xiang Zou, Sen Wang, Lin-Chuan Zhao, Zhi-Yuan Wu, Wen-Ming Zhang
Summary: This review provides an overview of recent studies on bio-inspired vibration isolators, categorizing key isolation mechanisms and performance characteristics to guide the design of new bio-inspired isolators for improved vibration isolation performance.
APPLIED MECHANICS REVIEWS
(2021)
Article
Engineering, Mechanical
Ge Yan, Hong-Xiang Zou, Sen Wang, Lin-Chuan Zhao, Zhi-Yuan Wu, Wen-Ming Zhang
Summary: A novel bio-inspired toe-like structure is developed for low-frequency vibration isolation, possessing favorable high static and low dynamic stiffness characteristics. It effectively isolates low frequency vibration loads and provides a feasible approach to passive vibration control in the low frequency band.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Energy & Fuels
Lin-Chuan Zhao, Hong-Xiang Zou, Ying-Jie Zhao, Zhi-Yuan Wu, Feng-Rui Liu, Ke-Xiang Wei, Wen-Ming Zhang
Summary: Energy harvesting technology enables self-powered rotor condition monitoring. A novel maximal utilization strategy for energy harvesting in a broad speed range is proposed and experimentally verified. The system operates effectively and achieves monitoring of rotor temperature and tire pressure in practical tests.
Article
Thermodynamics
Hongxiang Zou, Meng Li, Linchuan Zhao, Xinwen Liao, Qiuhua Gao, Ge Yan, Ronghua Du, Kexiang Wei, Wenming Zhang
Summary: This study proposes a human-friendly biomechanical energy harvester that utilizes a cooperative compliant traction mechanism. The harvester is driven by the knee joint through a compliant medium without any mechanical components, adding no weight or restraint to the knee joint. The harvester works in collaboration with the user's walking/running, collecting energy when the user does negative work. The use of frequency up-conversion and mechanical rectification improves the efficiency of electromechanical conversion. The prototype of this HF-BEH can generate power with little impact on mobility, and it has been shown to enable self-powered emergency call, positioning and tracking, health monitoring, and physical therapy. Human-vehicle interaction through self-powered wireless sensing based on HF-BEH has also been demonstrated to improve the safety of individuals with limited responsiveness and mobility in traffic environments.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Acoustics
Ge Yan, Wen-Hao Qi, Jun-Wei Shi, Han Yan, Hong-Xiang Zou, Lin-Chuan Zhao, Zhi-Yuan Wu, Xiao-Yong Fang, Xiu-Yuan Li, Wen-Ming Zhang
Summary: Inspired by the compensation effect of fat pad on toes in a paw of digitigrade, a unique paw inspired structure is proposed and investigated for passive vibration isolation. The structure consists of a toe-like structure simulated by rods and a spring, and a fat pad simulated by repulsive magnets. The structure can achieve quasi-zero stiffness and low-frequency vibration isolation.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Ge Yan, Zhi-Yuan Wu, Xin-Sheng Wei, Sen Wang, Hong-Xiang Zou, Lin-Chuan Zhao, Wen-Hao Qi, Wen-Ming Zhang
Summary: Various quasi-zero stiffness (QZS) vibration isolators have been successfully applied in low-frequency vibration isolation in recent years. However, the current approach is limited to compensating the negative stiffness of bistable structures using linear springs. This study proposes a nonlinear compensation method and verifies its effectiveness through a confirmatory system.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Mechanical
Lin-Chuan Zhao, Hong-Xiang Zou, Zhi-Yuan Wu, Qiu-Hua Gao, Ge Yan, Feng-Rui Liu, Ke-Xiang Wei, Wen-Ming Zhang
Summary: This study proposes a novel dynamically synergistic regulation mechanism for rotation energy harvesting in order to achieve sustainable energy supply for wireless sensor networks. Through experiments and simulations, the effectiveness and efficiency of this mechanism are verified. This research is of great significance for improving the comprehensive performance of rotation energy harvesters.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Chemistry, Physical
Hong-Xiang Zou, Lin-Chuan Zhao, Qiong Wang, Qiu-Hua Gao, Ge Yan, Ke-Xiang Wei, Wen-Ming Zhang
Summary: This paper proposes a self-regulation strategy for a triboelectric nanogenerator (TENG-SS) to achieve a self-powered wind-speed sensor. By rationally designing the centrifugal and nonlinear magnetic forces, the separation and contact degrees of the functional materials of TENG can be automatically adjusted for different wind speeds. Experimental results show that the proposed TENG-SS exhibits better performance and robustness in a natural wind environment.
Article
Mathematics, Applied
Qiong Wang, Zewen Chen, Linchuan Zhao, Meng Li, Hongxiang Zou, Kexiang Wei, Xizheng Zhang, Wenming Zhang
Summary: This paper proposes a galloping energy harvester with the cooperative mode of vibration and collision (GEH-VC) to address the issues of low power and narrow speed range in small-scale wind energy harvesting. It introduces curved boundaries attached with functional materials to improve the performance of the vibration energy harvesting system and convert more mechanical energy into electrical energy during collision.
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
(2022)
Article
Energy & Fuels
Feng-Rui Liu, Wen -Ming Zhang, Hong-Xiang Zou, Lin-Chuan Zhao, Ting Tan, Ke-Jing Ma, Ge Yan, Guang Meng
Summary: This paper proposes a multi-interference local pressure modulation mechanism in order to improve the harvesting performance of wind energy harvesters. The results show that the proposed multi-interference structure can effectively modulate the local pressure and improve the harvesting efficiency, achieving lower cut-in wind speed and higher harvesting efficiency.
Article
Engineering, Aerospace
Zhi-Yuan Wu, Han Yan, Lin-Chuan Zhao, Ge Yan, Ao Chen, Hai-Feng Hu, Wen -Ming Zhang
Summary: This paper proposes a new theoretical model to compensate for deficiencies in existing theoretical models. The flexible disk and blade are deduced based on Kirchhoff plate and Timoshenko beam theories. The accuracy of the developed model is verified by comparing it with the finite element method and experimental test. The influences of the crack depth and crack location on the coupling characteristics of the system are systematically investigated.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Zhi-Yuan Wu, Han Yan, Lin-Chuan Zhao, Ge Yan, Zhi-Bo Yang, Hai-Feng Hu, Wen-Ming Zhang
Summary: A novel axial-bending coupled breathing crack model for rotating blades is proposed in this study, providing valuable insights for fault diagnosis and safety monitoring of cracked blades.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Chemistry, Physical
Lin-Chuan Zhao, Hong-Xiang Zou, Xing Xie, Ding-Hua Guo, Qiu-Hua Gao, Zhi-Yuan Wu, Ge Yan, Ke-Xiang Wei, Wen-Ming Zhang
Summary: Harvesting wave energy through mechanical intelligent energy harvesting is a potential solution for irregular energy harvesting and self-powered Internet of Things (IoT) in marine environment monitoring. A novel concept of adaptive external excitation and regulation of energy harvesting system by mechanical structure or mechanism is proposed, and an irregular wave energy harvesting system is designed based on this concept. Experimental results demonstrate the effectiveness of the harvester at ultra-low frequencies and its capability to achieve a self-powered wireless marine environment monitoring system.
Article
Acoustics
Zhi-Yuan Wu, Han Yan, Lin-Chuan Zhao, Ge Yan, Ao Chen, Wen-Ming Zhang
Summary: This paper presents a theoretical framework for modeling a flexible dual-rotor system and investigates the effects of blade crack on the modal characteristics of the coupling system. The finite element and assumed modes hybrid method is adopted to model the system. The results show that blade crack causes frequency veering, mode shift, and mode localization, and also affects the coupling modes between the blade and the shaft.
JOURNAL OF SOUND AND VIBRATION
(2023)
Review
Electrochemistry
Sheng Liu, Sihua Liao, Kexiang Wei, Lianwen Deng, Linchuan Zhao, Hongxiang Zou
Summary: This review summarizes the work mechanism, research status, characteristics, and structures of self-biased magnetoelectric composites, and emphasizes the application and development of self-biased magnetoelectric devices for vibration and magnetic energy harvesting. The main challenges and future development directions for the design and implementation of energy harvesting devices based on the self-biased magnetoelectric effect are presented.
