基于干扰力反演的某闸门油缸减振处理分析
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摘要
某大型抽水蓄能电站尾水事故闸门在脉动水流作用下产生悬挂振动,导致其上部启闭机油缸产生强迫振动。根据现场检测结果和有限元仿真计算首先反演出油缸干扰力的幅值,结合动力学基本原理提出一个较为合理的减振处理方案,并根据有限元仿真计算对该工程方案的减振效果进行预估。从减振方案实施后的检测结果,可以看出该方案取得了良好的工程减振效果,说明提出的干扰力反演计算方法是正确的,制定的减振方案是可行的,对类似工程问题的处理提供了有益的参考。
Because of the pulsating flow,a tailrace emergency gate of a large pumped storage power station generates the suspension vibration,causing the forced vibration of the gate upper hoist cylinder.Based on field test results and the FEM simulation calculation,performances cylinder exciting force amplitude at first,the fundamental principle of dynamics puts forward a reasonable damping treatment program,and assesses the effect of vibration reduction according to the FEM simulation calculation.From the test results after the vibration reduction measure,it can be seen that this method has obtained the good effect of vibration engineering,which shows that this paper puts forward the calculation method of the inversion of exciting force is right,for vibration reduction scheme is feasible,for similar engineering problems of processing serves as a beneficial reference.
引文
[1]林敦志.闸门振动现象与振动特性分析[J].科技资讯,2010,(16):116.
    [2]刘晓燕.水工钢闸门振动现象及振动特性分析[J].南水北调与水利科技,2010,8(2):145-146.
    [3]张社荣,黄虎,牛军宜,等.基于S变换的叠梁闸门水脉动压力特性研究[J].振动与冲击,2011,30(1):145-217.
    [4]汪芳.框架结构在爆破地震波作用下的动力安全性分析[D].武汉:武汉理工大学,2006.
    [5]胡少伟,聂建国,陈淮.共振与类共振[J].工业建筑,1999,29(4):37-39.
    [6]路观平.随机脉动水压力作用下的结构响应[J].水利学报,1993,(12):70-75.
    [7]严根华,陈发展.涌潮荷载作用下大型桁架式平面闸门动力响应仿真分析[J].水利水电科技进展,2010,30(3):42-57.
    [8]欧进萍,王光远.结构随机振动[D].北京:高等教育出版社,1998.
    [9]严根华.水动力荷载与闸门振动[J].水利水运工程学报,2001,(2):10-15.

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