基于导纳功率流方法的动力吸振系统研究

建立了动力吸振器对单自由度隔振系统吸振的导纳功率流理论模型,以主振系在整个吸振频带消耗的净功率为控制目标,通过数值仿真对动力吸振器结构参数变化对单层隔振系统隔振效果的影响进行了研究。研究结果表明:动力吸振器的加入对隔振系统共振区的振动有显著抑制作用,在动力吸振器各结构参数中阻尼比、调谐比对隔振系统的影响最为明显。

Study of a Dynamic Vibration Absorber Using Mobility Power Flow Method

We build the mobility power flow model to show how a dynamic vibration absorber absorbs the vibration of a single-DOF vibration-isolation system.To reduce the power consumed by the main vibration system,we carry out the numerical simulation of the effect of the dynamic absorber′s structural parameter change on the single-DOF vibration-isolation system.The study results indicate that the addition of the dynamic vibartion absorber is remarkly effective for absorbing the vibration in the resonance area of the vibration-isolation system.Among all other structural parameters,damp ratio and stiffness produce the most remarkable vibration absorption effect on the vibration isolation system.