摘要
通过对矩形水箱的动力学分析后,提出利用水构成一种非线性吸振器,进行低频振动的吸收。通过进一步对两自由度吸振系统仿真,可知增大子系统的阻尼可以在更大程度上降低主系统的响应,因此利用常见建筑材料沙子构成了另外一种吸振器,做了它和水以及无吸振材料时的对比性实验,通过最后的数据分析,认为子系统阻尼越大,其对低频振动的吸收效果愈好,尽管其在个别频率处的效果可能会低。这为低频振动的实际工程治理提供了一种新的方法。
A non-linear absorber using water was gular box to absorb low-frequency vibration. Deeply, through an conclusion was made, that is ,increasing damping of based on the dynamic analysis of rectan- simulation of two-degree freedom system, subsystem can reduce the response of main-system. Therefore, another absorber was lifted by using usual material-sand, and comparison experiment was carried out by water, sand and no absorbing material. The final data indicates that the damping of subsystem is bigger, the absorbing effect is better, although its effect is lower in some discrete frequencies, which provide a new method of low-frequency vibration control in actual project.
出处
《噪声与振动控制》
CSCD
北大核心
2007年第1期37-40,共4页
Noise and Vibration Control
关键词
振动与波
矩形箱
水
沙子
频谱分析
vibration and wave
rectangular-box
water
sand
spectrum analysis
