Dynamic Analysis for Structures Isolated with Dampers  

作　　者：Gu Peiying and Gao Ming M. Sc, Engineer, Material and Structure Department, Nanjing Hydraulic Research Institute, Nanjing 210024 Professor, Material and Structure Department, Nanjing Hydraulic Research Institute, Nanjing 210024 

出　　处：《China Ocean Engineering》1996年第3期269-280,共12页中国海洋工程（英文版）

摘　　要：In this paper, mathematical models and dynamic analyses for both SDOF and MDOF structures isolated with dampers are established and performed, and a comprehensive computation method is provided. The shock absorbing effect is illustrated through an example of a two DOF damper-isolated system excited by sinusoidal waves and actual ground acceleration input recorded in earthquakes. It is shown that most of the responses of the structure with dampers reduce greatly near the resonant zone, but acceleration is enlarged in the lower or higher frequency zone; among various parameters, the influence of frictional coefficient n is the most significant, that of damping ratio of the dampers , is the second, and that of stiffness coefficient of the dampers k, is the slightest.- In this paper, mathematical models and dynamic analyses for both SDOF and MDOF structures isolated with dampers are established and performed, and a comprehensive computation method is provided. The shock absorbing effect is illustrated through an example of a two DOF damper-isolated system excited by sinusoidal waves and actual ground acceleration input recorded in earthquakes. It is shown that most of the responses of the structure with dampers reduce greatly near the resonant zone, but acceleration is enlarged in the lower or higher frequency zone; among various parameters, the influence of frictional coefficient n is the most significant, that of damping ratio of the dampers , is the second, and that of stiffness coefficient of the dampers k, is the slightest.

关 键 词：shock absorbing structure isolated with dampers shock absorbing effect dynamic analysis parametric analysis 

分 类 号：O327[理学—一般力学与力学基础]