柔索的微颗粒阻尼影响参数模拟研究  

SIMULATION STUDY ON MICRO PARTICLE DAMPING PARAMETERS OF FLEXIBLE CABLE

作　　者：赵玲[1] 马铁军[1] 张沫[1] 孙明杰[1] 

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225000

出　　处：《建筑技术开发》2014年第3期9-10,42,共3页Building Technology Development

基　　金：江苏省教育厅科研基金赞助项目(06KJD130207);江苏省高校优秀中青年教师和校长境外研修计划资助

摘　　要：研究对象是由钢丝模拟柔索,塑料管空腔和微颗粒共同组成的,通过离散元软件EDEM模拟分析,观察颗粒的运动和受力的状态,分析在振动中颗粒的接触、碰撞以及和能量消耗等重要参数的变化,对颗粒阻尼参数的作用进行分析。模拟结果表明:颗粒填充率、颗粒粒径是颗粒阻尼的重要的影响因素。设计颗粒阻尼减振装置时选取合适的颗粒填充率、颗粒粒径可以有效的增大阻尼的减振效果。The research object of this paper is composed of steel strand simulation soft rope, plastic pipe cavity and micro parti- cles. With the discrete element EDEM simulation analysis software, not only the movement of particles and the state of stress can be observed, but also change of the important parameters of particles collision, contact and energy con- sumption in vibration can be analyzed. The role of particle damping parameters is analyzed according to the result of experimentation. The simulation results show that the filling rate of the grain and the size of particle are important factors that influence the particle damping. Select suitable grain filling rate and particle size when you design parti- cle damping vibration reduction device can improved the damping effect of particle damping effectively. The simula- tion results provide bases fbr designing non-obstructive particle damping device legitimately.

关 键 词：非阻塞性颗粒阻尼 空腔 填充率 粒径 初始位移 

分 类 号：TU311.3[建筑科学—结构工程]