考虑泄漏和温度效应的黏滞阻尼器性能演变研究  

A study on the damping performance alteration of a fluid viscous damper considering oil leakage and temperature variation effect

作　　者：杨孟刚[1] 曹恺悦 李新 胡尚韬 YANG Menggang;CAO Kaiyue;LI Xin;HU Shangtao(School of Civil Engineering,Central South University,Changsha 410075,China;Luoyang Sunrui Special Equipment Co.,Ltd.,Luoyang 471000,China)

机构地区：[1]中南大学土木工程学院,长沙410075 [2]中船双瑞(洛阳)特种装备股份有限公司,河南洛阳471000

出　　处：《振动与冲击》2024年第8期169-177,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(52278232);中国中铁股份有限公司科技研究开发计划项目重大专项课题(2021-专项-04-2);中南大学研究生自主探索创新项目(2023ZZTS0406)。

摘　　要：黏滞阻尼器作为一种广泛使用的被动减振/震装置,其力学性能在全寿命周期内会发生演变。为探究其力学参数改变模式,揭示其性能演变机理,以油液泄漏和温度效应为主要影响因素开展了试验及仿真研究。首先,对不同漏油程度和环境温度下的黏滞阻尼器分别开展了滞回试验研究和黏温关系分析;其次,对黏滞阻尼器进行了流体动力学仿真,获得其性能演变规律;最后,建立了漏油与温度联合作用下黏滞阻尼器性能演变的力学模型,并对其进行了验证。研究结果表明,油液泄漏将导致滞回圈出现零力平台段,且平台长度与漏油比例成正比;温度升高会导致阻尼系数的减小,从而影响阻尼力峰值;所建立的性能演变模型能够较为精确地反映黏滞阻尼器力学性能的改变。As a widely used passive vibration control device,the fluid viscous damper exhibits mechanical performance alteration throughout the entire service life.To explore the mechanical parameter changing mode and reveal the mechanism of performance alteration,experimental and simulation studies were conducted with oil leakage and temperature effects as the main influencing factors.Firstly,cyclic tests and viscousity-temperature analysis were carried out on viscous dampers under different oil leakage levels and ambient temperatures,respectively.Secondly,fluid dynamics simulations were performed to obtain the alternating tendency of the hysteresis performance.Finally,an analytical model reflecting the performance alteration of viscous dampers under combined oil leakage and temperature effects was established and verified.The results show that oil leakage causes a“zero-force gap”appearing in the hysteresis loop,of which the length is proportional to the leakage level.Temperature increase leads to decrease in the damping coefficient,which affects the peak damping force.The established performance alteration model can accurately reflect the changes in mechanical performance of viscous dampers.

关 键 词：黏滞阻尼器 油液泄漏 温度效应 性能演变模型 滞回试验 流体动力学仿真 

分 类 号：U443.5[建筑科学—桥梁与隧道工程] TU894[交通运输工程—道路与铁道工程]