某大型尾水事故闸门启闭机油缸振动有限元反演

Finite element inversion of hoist cylinder vibration of a large tail water emergency gate

对某大型尾水事故闸门启闭机油缸大幅振动进行了检测,通过有限元推定出了其震源机制,结合现场检测的油缸振动幅值反演得到了油缸振动干扰力,以及闸门面板上的脉动水压力分布。将有限元方法应用于油缸振动震源机制的推定和振动荷载的反演是一次有益尝试,鉴于某些振动荷载实测的困难性,此方法为结构检测提供了一种新的思路。

The hoist cylinder vibration of large magnitude at a large tail water emergency gate was detected.The finite element method was used to determine the vibration mechanism,the cylinder vibration disturbance force combined with the cylinder vibration amplitude through field detection,and the pulsating water pressure distribution on the gate panel.Using the finite element method for the determination of vibration mechanism and inversion analysis of vibration load of cylinder is a beneficial approach.Given the difficulties of the vibration load detection sometimes,the method provides a new solution for the structure detection.