摘要
水工平面闸门流激振动的模态参数包括固有频率、阻尼比以及模态振型,而识别这些参数的基础是获得准确的频率响应函数.对获得频率响应函数的两种方法进行分析比较后,提出了基于拉普拉斯变换的频谱分析方法,可以获得高精度的频率响应函数.
The modal parameters of flow-induced vibration of hydraulic plate gates consist of natural frequency, damping and mode shapes. The identification of these parameters is based on the obtaining of accurate frequency response function. Two methods of obtaining frequency response function are analyzed and compared in this paper. The frequency spectrum analysis based on the Laplace Transform could obtain a high precision FRF.
出处
《中国计量学院学报》
2005年第4期279-282,339,共5页
Journal of China Jiliang University
