Study On The Dynamic Performance Of Air Filter

Nuclear power as a clean ener gy has been widely prom oted worldwide,and has brought convenience to people' s lives.Meanwhile,there have also been som e nuclear leakage accidents which caused people to talk about it.One of the caus es of nuclear leakage is the earthquake ef fect.Therefore,it is very im portant to study the dynam ic performance of nuclear power equipment under the earthquake.In this thesis,the finite element software ANSYS is used to analyze the air filter.The main work and innovation of the full text are summarized as follows:(1)The three-dimensional finite element model of air filter is established by APDL parameterization language in ANSYS,and the thermo-structural coupling field static analysis is used to get the stress and strain distribution of air filter.(2)The modal analysis and dynam ic response analysis are carried out,based on the results of numerical simulation preliminary analysis of st ructural vibration characteristics.(3)Based on the modal decom position response spectrum m ethod,the three-dimensional finite element model of the air filter is calcul ated and the maximum dynamic response(including the maximum displacement,the maximum stress and the maximum bottom shear force)of the air filter are obtained.(4)In order to verify the validity of th e calculation results,the dynam ic time history analysis of the structural m odel is carried out,and the results of dynamic time history analysis and response spectrum analysis are compared.(5)According to the calculation results of response spectrum analysis and dynam ic time history analysis,the maximum shear stress,the maximum pullout stress and the maximum stress of some structures are calculated.Through the above research to determ ine the overall safety perform ance of the air filter,the results of this thesis not only provide security for the project,but also provide useful reference for the same type of structural design and engineering application.