考虑堆积状态的阻尼颗粒起振及减振分析

英文篇名：ANALYSIS OF STARTING CONDITION OF PARTICLE DAMPING VIBRATION AND REDUCTION IN VIBRATION BY CONSIDERING STATE OF ACCUMULATIONS
中文刊名：工业建筑
英文刊名：Industrial Construction
作者：许维炳 ; 闫维明 ; 王瑾 ; 陈彦江
英文作者：Xu Weibing ; Yan Weiming ; Wang Jin ; Chen Yanjiang ; Construction Engineering Testing Center ; China Academy of Building Research ; Beijing Laboratory of Earthquake Engineering and Structural Retrofit ; Beijing University of Technology
中文关键词：颗粒阻尼 ; 堆积状态 ; 起振条件 ; 颗粒-单自由度结构振动系统 ; 运动状态
英文关键词：particle damper ; accumulating state ; starting conditions for the oscillation ; particle-SDOF oscillating system ; moving states
出版日期：2015-06-20
机构：中国建筑科学研究院建筑工程检测中心;北京工业大学工程抗震与结构诊治北京市重点试验室;
年：2015
期：06
出版单位：工业建筑

摘要

针对颗粒阻尼技术在机械、航天与土木工程领域减振控制使用环境的差异性,对颗粒阻尼技术在土木工程领域等低频、低幅振动条件下颗粒的减振控制机理进行理论分析,指出堆积状态是颗粒阻尼在土木工程领域应用的主要影响因素之一;推导出不同堆积状态下颗粒的起振条件;并以Hertz接触理论和Coulomb摩擦定律为基础,通过MATLAB编程建立颗粒-单自由度结构振动系统,对颗粒起振条件及起振前后颗粒的减振控制效果进行分析。
This paper is focusing on the difference between the circumstances of the particle damper's application in mechanical,astronautics and civil engineering seismic controls. A theoretical analysis was conducted aiming at the seismic control of the particle dampers with low frequency and amplitude. The analysis indicated that the accumulation was one of the key factors to the application of the particle dampers in civil engineering. Thus the starting conditions for the particle oscillation under different accumulating states were derived. Based on the Hertz contact theory and the Coulomb law of friction,a particle-SDOF oscillating system was established with MATLAB,and the starting conditions for the particle oscillation and the damping performance were also analyzed.

引文

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