连续悬臂梁动力吸振器的模型研究

Study on Model of Continuous Cantilever Beam-type Dynamic Vibration Absorber

针对吸振器动力参数固定不可变或仅能产生离散变化的局限性问题,在连续悬臂梁的基础上通过增加滑动质量块的方式,设计了一种新型的参数可连续变化的悬臂梁吸振装置,并对其进行了共振频率、效果试验分析。为提高主体振动控制的效果又对参数进行了优化分析。结果表明,该装置对受固定频率简谐激励的主体结构进行动力吸振可行有效,动力参数连续可调。

Aiming at the limitation problem of constant or only discrete-state adjustable dynamic parameter for vibration absorber,a new cantilever beam-type absorber device with continuous adjustable parameters is designed by adding a movable mass block on the cantilever beam.And its resonant frequency and experimental effect are analyzed.Parameters optimization analysis is implemented for improving vibration control effect of subject.The results show that the feasibility and effectiveness of cantilever beam-type absorber device in vibration absorption of subject with fixed frequency harmonic vibration is confirmed,and the dynamic vibration absorber with continuous adjustable parameters is achieved.