On the role of sliding friction effect in nonlinear tri-hybrid vibration-based energy harvesting  

作　　者：Jiamei WANG Siukai LAI Chen WANG Yiting ZHANG Zhaolin CHEN 

机构地区：[1]Department of Civil and Environmental Engineering,The Hong Kong Polytechnic University,Hong Kong,China [2]The Hong Kong Polytechnic University Shenzhen Research Institute,Shenzhen 518057,Guangdong Province,China [3]Hebei Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures,Yanshan University,Qinghuangdao 066000,Hebei Province,China [4]School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第8期1295-1314,共20页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 12372024 and 12002300);the Natural Science Foundation of Hebei Province of China (No. A2021203013)。

摘　　要：This work aims to develop an experimental investigation into the effectiveness of the sliding-mode approach for hybrid vibration-based energy harvesting.A proposed sliding-mode triboelectric-electromagnetic-piezoelectric energy harvesting model involves a cantilever beam with a tip mass exposed to magnetic and frictional forces.The experimental findings indicate that the system can achieve its peak inter-well oscillation output within a low-frequency range of 4 Hz–6 Hz.Friction has a lesser impact on the open-circuit voltage output at an excitation acceleration of 1.5g compared with 1g.The distribution of tri-stability changes with the presence of friction.This model provides a deeper understanding of the influence of the dry friction coefficient(0.2–0.5) on the interactive behaviors of different generator units.

关 键 词：sliding mode tri-hybrid energy harvesting FRICTION nonlinear behavior 

分 类 号：O322[理学—一般力学与力学基础]