主动隔振与动力吸振器的联合减振研究  

RESEARCH ON THE JOINT VIBRATION REDUCTION OF ACTIVE VIBRATION ISOLATION AND DYNAMIC VIBRATION ABSORBER

作　　者：孙红灵[1] 张培强[1] 张鲲[1] 

机构地区：[1]中国科学院材料力学行为和设计重点实验室,中国科学技术大学力学和机械工程系,合肥230027

出　　处：《机械强度》2005年第4期432-435,共4页Journal of Mechanical Strength

基　　金：总装备部"十五"预研项目~~

摘　　要：针对单层主动隔振系统,研究主动隔振对隔振对象振幅的影响。发现存在临界频率,对于临界频率以下的激励,主动隔振会加剧隔振对象的振动。临界频率是阻尼的函数,选择合适的阻尼可使临界频率尽量小,但存在下限。引入动力吸振器能有效降低隔振对象低频响应的振幅,分析表明,对于舰船的低频噪声,主动隔振与动力吸振器联合减振是一种有效的综合治理方法。Based on a single-layer active vibration isolation system, the influence relationship between active vibration isolation andt he vibration amplitude of isolation object was investigated. It is found that there exists a critical frequency and the active vibration isolation will deteriorate the vibration of isolation object when the frequency of the excitation is under the critical frequency. The critical frequency is the function of damping and can be made as small as possible through selecting suitable damping. However the critical frequency has a lower limit. The dynamic vibration absorber is combined with the active vibration isolation and it can reduce the amplitude of low frequency response of isolation object. The analysis shows that for the low frequency noise of ship, the joint vibration reduction of active vibration isolation system and dynamic vibration absorber is an effective considerate method.

关 键 词：主动隔振 振幅 临界频率 动力吸振器 联合减振 

分 类 号：TB535.1[理学—物理] O329[理学—声学]