利用振动能量的传递与变化来描述系统的振动状态具有诸多优点，功率流作为隔振系统中能量传播的一个衡量指标，可以方便地分析机械振动的传播路径与隔振系统的隔振效果。本文将柔性基础上的单层隔振系统简化为四边简支薄板基础上的单层隔振系统模型。通过对模型的分析和数值计算，可以考察各变量对于隔振效果的影响，通过不同的方式来评估隔振系统的隔振效果，将功率流概念运用到隔振效果的评估中，分析其中的差别和相似点，为隔振系统的设计与评估提供指导。
It has a lot of advantages to describe system's vibration state from the perspective of energy. We can analyze the transmission characteristic of vibration and judge the vibration isolation effect conveniently by using the concept of power flow. In this paper, a single stage vibration isolation system on flexible base is simplified as a single stage vibration isolation system on simply supported plate. By using this model and numerical calculation, we can analyze each variable's effect to the vibration system. By using different method to evaluate the effect of the vibration reduction system with or without the concept of power flow, we can analyze the similarities and differences between them and provide guidance for the following work.
2017,39(3): 64-68 收稿日期：2016-05-28
DOI：10.3404/j.issn.1672-7619.2017.03.013
分类号：TU112.59+6
作者简介：郑迁(1991-),男,硕士研究生,主要研究方向为振动与噪声控制
参考文献：
[1] 严济宽, 柴敏, 陈小琳. 振动隔离效果的评定[J]. 噪声与振动控制, 1997(6):22-30.YAN Ji-kuan, CHAI Min, CHEN Xiao-lin. Evaluation of vibration isolation efficiency[J]. Noise and Vibration Control, 1997(6):22-30.
[2] 韩旭. 车辆系统振动传递路径分析与结构声辐射控制研究[D]. 上海:交通大学, 2013.
[3] 朱石坚, 何琳. 船舶机械振动控制[M]. 北京:国防工业出版社出版社, 2006.
[4] 严济宽. 振动功率流的一般表达式及其测量方法[J]. 噪声与振动控制, 1987(1):24-29.YAN Ji-kuan. General expression of vibration power flow and its measurement method[J]. Noise and Vibration Control, 1987(1):24-29.
[5] 霍睿, 施引. 功率流隔振效率评价指标及其与振级落差的关系[J]. 中国造船, 2007, 48(3):86-92.HUO Rui, SHI Yin. The power flow efficiency criterion for vibration isolation design and its relationship with vibration level difference[J]. Shipbuilding of China, 2007, 48(3):86-92.
[6] 周保国. 复杂隔振系统的功率流研究[D]. 上海:交通大学, 1994.
[7] 乔百杰, 赵彤, 陈雪峰. 功率流测量以及振动能量参数估计试验研究[J]. 振动与冲击, 2014(7):194-198.QIAO Bai-jie, ZHAO Tong, CHEN Xue-feng. Tests for power flow measurement and vibrational energy estimation[J]. Journal of Vibration and Shock, 2014(7):194-198.
