摘要
针对黏滞阻尼器可提供控制力范围窄,磁流变等变阻尼装置需能量输入和反馈控制的局限性,设计制作了一种新型速度相关的被动变阻尼耗能装置(PVDD)。装置根据孔隙式黏滞阻尼器相关理论设计,采用机械方式随速度变化动态改变流孔面积,通过实时调节阻尼系数的方法实现可变阻尼力的输出;通过不同加载频率与幅值性能试验,检验装置变阻尼力输出的可行性。试验结果表明:装置阻尼系数可随外部激励速度大小连续可变,速度大时阻尼系数也相应变大,因而可以输出可变的阻尼力。被动变阻尼装置无需外部能源供给,构造简单可靠,更具高效和强适应性。
Due to the narrow output range of the viscous damper,and the magnetorheological damper needs external energy input and response data feedback control,a speed-dependent passive variable damping damper(PVDD)is designed.Based on the theories of cylinder-with-holes viscous damper,the device dynamically changes the orifice area with the change of the speed by mechanical means,and realizes the output of the variable damping force by adjusting the damping coefficient in real time.The feasibility of variable damping force output of the device is tested through different loading frequency and amplitude performance tests.The test results show that the damping coefficient of the device can be continuously variable with the velocity of excitation,and the damping coefficient correspondingly increases when the velocity is large,so that it can output a variable damping force.Passive variable damping device requires no external energy supply,and has a simple and reliable construction,and more efficient and adaptable.
作者
付伟庆
李茂
张春巍
FU Wei-qing;LI Mao;ZHANG Chun-wei(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Co-operative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao 266033,China)
出处
《振动工程学报》
EI
CSCD
北大核心
2020年第5期869-876,共8页
Journal of Vibration Engineering
基金
“十三五”国家重点研发计划资助项目(2017YFC0703600)
国家自然科学基金资助项目(51678322)
山东省自然科学基金资助项目(ZR2019MEE020)。
关键词
振动控制
被动变阻尼
性能试验
耗能装置
滞回曲线
vibration control
passive variable damping
performance test
energy dissipation device
hysteresis curve
