CAJ | 학술논문

针对国内二代改进型的两环路核电厂试验用支管中存在的振动疲劳问题,文章提出了一种确定疲劳振动的测量和计算分析方法,并运用该方法对国内某两环路核电厂小支管进行了工况分析、振动测量和最大有效振动速度计算,同时采用结构力学有限元程序ANSYS软件对小支管的振动疲劳应力进行了分析.结果表明,该方法能够很好地诊断出小支管中存在的第一类敏感管和第二类敏感管,从而为判断在两环路核电厂试验中支管是否为敏感管提供了理论依据.
침대국내이대개진형적량배로핵전엄시험용지관중존재적진동피로문제,문장제출료일충학정피로진동적측량화계산분석방법,병운용해방법대국내모량배로핵전엄소지관진행료공황분석、진동측량화최대유효진동속도계산,동시채용결구역학유한원정서ANSYS연건대소지관적진동피로응력진행료분석.결과표명,해방법능구흔호지진단출소지관중존재적제일류민감관화제이류민감관,종이위판단재량배로핵전엄시험중지관시부위민감관제공료이론의거.
As for the vibration fatigue problems existed in branch pipesused for test of domestic generation Ⅱ+ two-loop nuclear power plant, a measurement and calculation analysis method for identifying fatigue vibration is proposed, which is applied to carry out condition analysis, vibration measurement and maximum effective vibration speed calculation for small branch pipes of a domestic two-loop nuclear power plant. At the same time, the structural mechanics fi-nite element application program ANSYS is used to analyze the vibration fatigue stress of small branch pipes. The result shows that this method can diagnose the first type and the second type of sensitive pipes existed in small branch pipes. Thus, it can provide the theoreticalbasis for de-termining whether there are sensitive pipes in the branch pipes used for test of two-loop nuclear power plant.