简单浮筏隔振系统隔振器的传递率特性分析

Analysis on Transmissibility Characteristics of Isolator in Simple Floating Raft Vibration Isolating Devices

用连续系统论分析了简单浮筏隔振系统隔振器的力绝对传递率特性。将隔振器分别简化为离散弹性元件、一维杆和梁等几种模型,同时对经典Euler梁、不考虑剪切变形影响的Timoshenko梁、不考虑转动惯量影响的Timoshenko梁和Timoshenko梁这几种模型进行了分析比较。该研究方法能更正确地解决在中高频率下振动噪声控制的技术问题。

The theory of continuous object is used to analyze the transmissibility of isolator in vibration isolating devices of floating raft. Isolator is simplified to be several models such as a discrete elastic elements, a pole and a beam. In addition, the differences among classical Euler beam, Timoshenko beam without shear deformation, Timoshenko beam without rotary inertia and Timoshenko beam are investigated. This research method can settle down technology problem in medium and high frequency vibration and noise control more effectively.