基于非线性理论的海上平台空调机组振动预测与减振研究

Vibration prediction and reduction research on platform refrigeration system based on nonlinear theory

基于非线性振动理论,建立振动预报方法。通过对空调机组振动的测试与分析,找出了该机组振动的主要激励源和有关影响因素。进而提出了具有针对性的改进措施和增加隔振器的方法,消除结构之间的半刚性连接,改变了海洋平台整体结构的固有频率,使之远离共振区域,取得了明显的减振效果。并通过现场勘探测量和计算,验证了振动分析方法。

Based on nonlinear vibration theory, vibration prediction method is established. By testing and analysis of air-conditioning vibration, the main relevant influence factor and main excited vibration source of air-conditioning are found. There is taking a targeted improved measure that eliminating the semi-rigid connection between structures by setting vibration isolation device.The natural frequency of ocean platform structure is changed and apart from the resonance area.The method gets obvious good effect on vibration isolation. According with in-situ detection and measure vibration analysis method is verified.