Research on Breeze Vibration Law and Modal Identification Method of Conductor Considering Anti-Vibration Hammer Damage

作     者：Long Zhao Xudong Lu Xinbo Huang Hao Yang Guoze Feng 

作者机构：School of Information and ElectronicsXi’an Polytechnic UniversityXi’an710048China 

出 版 物：《Structural Durability & Health Monitoring》 (结构耐久性与健康监测（英文）)

年 卷 期：2023年第17卷第4期

页      面：283-297页

核心收录：

学科分类：0821[工学-纺织科学与工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(No.52007138) the Natural Science Basis Research Plan in Shaanxi Province of China(No.2022JQ-568) the Key Research and Development Program of Shaanxi Province(No.2023-YBGY-069) 

主　　题：Transmission line conductor anti-vibration hammer breeze vibration modal parameter vibration characteristic 

摘      要：In the harsh environment,the structural health of the anti-vibration hammer,which suffers from the coupled effects of corrosion and fatigue damage,is significantly *** part of the conductor structure,the anti-vibration hammer is rigidly attached to the conductor,effectively suppressing conductor *** conductor’s breeze vibration law and natural modal frequency are altered damage to the anti-vibration hammer *** built a vibration experiment platform to simulate multiple faults such as anti-vibration hammer head drop off and position slippage,which to obtained the vibration acceleration signal of the *** acceleration vibration signal is processed and analyzed in the time and frequency *** results are used to derive the breeze vibration law of the conductor under multiple faults and propose an anti-vibration hammer damage online monitoring *** results show that the vibration acceleration value and vibration intensity of the conductor are significantly increased after the anti-vibration hammer *** natural frequency increases for each order,with an absolute change ranging from 0.15 to 6.49 *** anti-vibration hammer slipped due to a loose connection,the 1st natural frequency increases from 8.18 to 16.62 ***,in engineering applications,there can be no contact to determine the anti-vibration hammer damage situation by monitoring the modal natural frequency of the *** is even a tiny damage that cannot be *** method will prevent the further expansion of the damage that can cause accidents.