水工弧形闸门流激振动的改进简化力学模型

对弧形闸门危害性的流激振动进行振动控制，其中前提之一是对闸门模型做适当的简化。利用三维有限元方法计算的结构动力特性与简化结构动力特性相等的原则修正弧形闸门简化力学模型，并确定了等效的弧形闸门三维简化结构模型和系统参数。分析和计算表明，建立的简化三维力学模型较好地反映了弧形闸门结构的动力特性和随机脉动压力下的振动反应，可用于安装阻尼器的弧形闸门的智能控制设计。

Improvement of Mechanically Simplified Model for Flow-Inducing Vibration of Hydraulic Arch Sluice

Realization of vibration control of the harmful flow-inducing vibration of arch sluice needs simplification of sluice model. Three dimensional finite element method is used to calculate the structural dynamic properties, and the principle of equivalent dynamic properties is adopted to modify the simplified mechanical model of arch sluice. Three dimensional simplified structure model and its system parameter of the equivalent arch sluice are determined. The results of analysis and calculation show that the simplified three dimensional mechanical model can reflect the dynamic properties of arch sluice structures and the vibration reaction of stochastic pulse pressure. Therefore, it can be used in the intelligent control design of arch sluice installed with dampers.