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Stress Analysis of Gate under Flow-induced Vibration

Author: HuZuo
Tutor: LiuXiaoQing
School: Hohai University
Course: Hydraulic Structure Engineering
Keywords: Hydraulic gate Underwater lie down door Fluid-structure interaction Vibration characteristics of Fluctuating pressure Dynamic Response
CLC: TV312
Type: Master's thesis
Year: 2006
Downloads: 248
Quote: 4
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Abstract


The steel gate is an important part of the hydraulic structures , from the the gate crashed view , discharge or a small opening in the gate opening and closing process generally has a vibration phenomenon . How more accurate solving the vibration characteristics of steel gate and how to solve the gate to provide a practical basis for the flow-induced vibration response of the various components of the dynamic design of the gate , is urgently needed to resolve the problem . The vibration of the gate wide-ranging and in-depth analysis : analysis of the gate vibration caused by reason and its corresponding measures , the gate vibration characteristics analysis method , and compare their advantages and disadvantages . Gate of such a combination of complex spatial structure dynamic finite element analysis principles and methods . On this basis , this paper uses the current value of the most commonly used in the calculation of \the vibration characteristics of the gate in the air and consider the coupling effect , and draw the appropriate conclusions . The gate vibration analysis method is difficult to give the gate of the various components of flow-induced vibration response to specific values ??, In this paper, based on hydraulic model test measured fluctuating pressure conditions gate model , the test measured flow fluctuating pressure spectrum analysis more accurate to consider the different levels of fluctuating pressure of time and space and the different frequency components , measuring point fluctuating pressure transducer finite element calculation of nodal loads of random vibration calculation method for solving the gate flow-induced vibration power response. Thus explores a combination of the hydraulic model test with numerical calculation to calculate shutter excited response to specific values ??, and applied to the Qingshuihe pump gate underwater lie down the door flow-induced response calculation , the result is reasonable and reliable , the method can be applied to the spillways , guide wall , pier fluctuating loads other hydraulic structures . Underwater lie down door is a new door type , by comparative analysis of the common gate , the door type suitable to promote the use of urban waterways .

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CLC: > Industrial Technology > Hydraulic Engineering > Hydraulic structures > Structural theory and computational > Structural Dynamics
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