Experimental modal analysis on hydraulic radial gate
NIU Hai?feng,SONG Yi?le,HE Wen?juan(Department of Civil Engineering, Wuhan University, Wuhan 430072,China)
Application of experimental modal analysis techniques in hydraulic structures remedies the defect produced by finite element calculating method by which a series of hypotheses and boundary conditions cant accord with the realities and provides the strong measure for treating engineering. This paper briefly presents the principle and experimental method of experimental modal analysis techniques,and a modal analysis to a working radial gate was conducted. The analysis reveals that: modal parameters of radial gate are not only under control of material properties in itself,but also influenced by operating mode; middle degree vibration occurs when the radial gate is operated in disadvantageous opening; in addition,there is a complex modal factor to a certain extent in the process of vibration.
【CateGory Index】： TV663.2