质量弹簧串联系统发生原点反共振时子系统的响应特性  

RESPONSE CHARACTERISTICS OF A SUBSYSTEM IN THE SERIALLY CONNECTED MASS-SPRING SYSTEM AT ORIGIN ANTIRESONANCE

作　　者：刘杰[1] 闻邦椿[1] 纪盛青 

机构地区：[1]东北大学

出　　处：《振动与冲击》1997年第1期38-42,共5页Journal of Vibration and Shock

摘　　要：本文利用机械阻抗方法,对无阻尼质量弹簧串联系统进行了动力学分析,发现该系统在发生反共振时,子结构各质量的振幅之比总是等于该子结构模态向量各元素之比,从而可以方便地求得系统在简谐激振力下的响应.In this paper, the dynamic analysis of a serially connected mass-spring system in which the damping is disregarded is presented. It is found that in a subsystem, at antiresonance, the ratio of the amplitude of any two masses is always equal to the ratio of the corresponding two elements of the modal vector. As a result, the response of the system may be easily got under harmonic excitation.

关 键 词：反共振 机械阻抗 子系统 机械系统 响应 

分 类 号：TH113.1[机械工程—机械设计及理论]