CAJ | 학술논문

基于流固耦合数值模拟相关理论与方法，利用有限元软件ANSYS12．0，构建了水流－闸门耦合分析的动力计算模型；结合ANSYS的声场分析功能及谐波声场分析准则，计算了各种腐蚀工况下闸门的自振频率并进行了模态扩展，探讨了腐蚀位置、蚀余厚度、腐蚀面积对弧形钢闸门自振频率及其振型形式的影响。动力计算成果分析表明：当面板腐蚀的位置在闸门顶端，或蚀余厚度≤5 mm（5、4 mm）时，对弧形钢闸门自振频率的影响相对比较明显；腐蚀工况下弧形钢闸门的自振频率偏低，若水流频率偏低时，可能产生共振现象，影响闸门的安全运行。
기우류고우합수치모의상관이론여방법，이용유한원연건ANSYS12．0，구건료수류－갑문우합분석적동력계산모형；결합ANSYS적성장분석공능급해파성장분석준칙，계산료각충부식공황하갑문적자진빈솔병진행료모태확전，탐토료부식위치、식여후도、부식면적대호형강갑문자진빈솔급기진형형식적영향。동력계산성과분석표명：당면판부식적위치재갑문정단，혹식여후도≤5 mm（5、4 mm）시，대호형강갑문자진빈솔적영향상대비교명현；부식공황하호형강갑문적자진빈솔편저，약수류빈솔편저시，가능산생공진현상，영향갑문적안전운행。
Based on the theories and methods of fluid-structure coupling numerical simulation ,this paper uses the finite element soft‐ware ANSYS12 .0 to establish the dynamic calculation models of the water-gate coupling structure .Based on ANSYS Mechanical sound field analysis function and harmonic sound field analysis principles ,ANSYS software is used to calculate the gate's natural fre‐quencies based on the direct method of ANSYS ,and model expansion is make under different corrosion conditions .The influences of the corrosion factors as corrosion location ,erosion thickness and corrosion area to the gate natural vibration frequency and the vibra‐tion modes are discussed .The dynamic calculation results show that :when the position of the panel corrosion at the top of the gate , or erosion thickness is equal to 5 mm or 4 mm ,the influence on the gate's natural vibration frequency is relatively obvious .All the gate natural vibration frequencies are low under different corrosion conditions .If water frequency is low ,resonance may appear and affect the safe operation of the gate .The research results serve as a reference for the steel gate of its design ,monitoring ,evaluation , operation management ,and so on .