不同阻尼情况下减振浮筏振动响应计算研究

提出一种计算减振浮筏系统振动响应的方法，建立浮筏系统力学模型，研究阻尼对系统响应的影响，并以一实际浮筏系统为例，分别使用振型叠加法与数值积分法计算了位移，速度响应及传递至基础的力、所得结果完全一致。

Calculation of Vibration Response for Floating Raft Isolation System at Varied Damping

The purpose of this paper is to provide an approach to calculate the overall response of floating raft isolation system containing any number of masses and isolators under the excitations caused by machinery. An analytical model of the floating raft isolation system is established. The affection of damping on the system response is studied. Taking a practical floating raft isolation system as an example,the displacement and velocity response and the transmitted force to the foundation were computed using the Mode Summation Method and Finite Difference Numerical Computation Method respectively. The agreement of the results calculated by both methods proves the correctness of the model and the calculating process.