摘要
在吸振器振子与主系统之间引入惯容器,与阻尼、弹簧元件并联或串联,采用阻抗导纳法可以对吸振系统传递率进行计算,从而获得系统传递特性曲线,分析各参数(惯容器惯容量,阻尼系数,弹簧刚度)对吸振效果的影响。对比三种模型分析惯容器惯容量对系统影响,结果表明惯容器并联时,惯容值变化会影响反共振峰位置,但只能向低频偏移;惯容器与阻尼串联时,惯容值变化对系统的影响与阻尼类似,增大惯容值会使共振峰和反共振峰响应减小,但是反共振峰位置不会偏移;惯容器与弹簧串联时反共振峰可以向两侧偏移。三种基本模型中惯容量的影响各不相同,可以为复杂含惯容元件的吸振器模型提供参考和借鉴。
The inerter elements were introduced to the vibration absorber systems in parallel or series connection form with the damping and spring. Dynamic transmission characteristics of the systems were calculated using impedance-mobility approach. Influences of various parameters, such as inertance, damping and spring stiffness, on the vibration absorber performance were analyzed. Three models for different inerter connection forms were established for comparative analysis of the inertance influence on system dynamic performance. Numerical results show that when the inerter element is in parallel connection with the damper and spring, the inertance variation will affect the position of the anti-resonance peak,which can only shift towards the low frequency direction. For the inerter in series connection with the damper, influence of the inertance variation is similar to the damping influence. Increase of inertance can reduce the resonance and anti-resonance peaks, but the location of the anti-resonance peak will not shift. For the inerter in series connection with spring, the antiresonance peak will shift to both sides. Inertance influences are different for the three different inerter connection forms.This work may give some guidance for the design of more complex vibration absorbers with inerters.
作者
张贇
杜敬涛
何谦
ZHANG Yun;DU Jingtao;HE Qian(College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)
出处
《噪声与振动控制》
CSCD
2018年第A01期339-343,共5页
Noise and Vibration Control
关键词
振动与波男
惯容器
吸振器
串联
并联
阻抗-导纳
vibration and wave
inerter
vibration absorber
impedance-mobility approach
