弹性安装设备等效总激励力的计算方法研究  

Estimation Method on Equivalent Total Exciting Force of Flexible Mounting Machinery

作　　者：张继明[1] 彭伟才[1] 刘彦[1] 汪浩[1] 邵汉林[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2011年第6期54-57,65,共5页Chinese Journal of Ship Research

摘　　要：针对弹性安装条件下多机脚设备总激励力估算繁琐的问题,提出一种设备等效激励力的计算方法。该方法将弹性安装的多机脚设备等效为只有一个机脚支撑的设备,将原有的多个隔振器简化为一个具有有效总阻抗的隔振器,利用原机脚隔振器上下端的响应与隔振器的有效总阻抗估算出的激励力,即可等效为该设备的总激励力。为验证该方法的准确性,利用该方法对某船用设备振动激励力进行估算。实验数据分析表明,在临界频率以内,可以忽略隔振器之间的耦合,估算值与实际测量值之间的误差小于5 dB,满足工程要求。To simplify the estimation of the total exciting force for machinery flexibility mounted by multi-feet,proposing an equivalent estimation method of exciting force.The flexible mounting machinery mounted by multi-feet is equivalent to that mounted by single machine foot.Then the velocity on the input-end and output-end,and effective total impedance of isolator are used to estimate the exciting force,namely the total exciting force.The proposed method is compared with the experimental results.The results show that the coupling effects between isolators can be ignored below the critical frequency and the error of proposed method is less than 5 dB.

关 键 词：有效总阻抗 总激励力 隔振器 四端参数 

分 类 号：U661.44[交通运输工程—船舶及航道工程]