Study of two-section composite chain of beads under vertical vibration  

作　　者：DING Mang MIAO GuoQing 

机构地区：[1]Institute of Acoustics and Key Laboratory of Modern Acoustics of Ministry of Education, Nanjing University, Nanjing 210093, China

出　　处：《Chinese Science Bulletin》2012年第14期1631-1636,共6页

基　　金：supported by the National Natural Science Foundation of China (10674067 and 10474045)

摘　　要：We investigated the dynamic properties of a two-section composite chain of beads under vertical vibration.By analyzing the chain's motion,including phase-shift,mean dilation,center-of-mass displacement,and energy,we found that with different bead arrangements,the chain behaved in different ways.We believe that interaction existing at the interface between bead sections provides the underlying cause.This interaction causes different energy in different arrangements,which leads to different dynamic characteristics.We investigated the dynamic properties of a two-section composite chain of beads under vertical vibration. By analyzing the chain＇s motion, including phase-shift, mean dilation, center-of-mass displacement, and energy, we found that with different bead arrangements, the chain behaved in different ways. We believe that interaction existing at the interface between bead sections provides the underlying cause. This interaction causes different energy in different arrangements, which leads to different dynamic characteristics.

关 键 词：垂直振动 复合 链 动态特性 相互作用 质量中心 

分 类 号：TB535[理学—物理]