Abstract:
The flow induced vibration is studied in this paper by the combined methods of experiment and simulation. Based on the similarity criterion for the flow induced vibration, a 1:5 test model is designed. According to the RG1.20, the experiment study and analysis and calculation are conducted by finite element method. The challenges in the layout of sensor are solved in this test, and full test data are obtained. Based on the test data, the response of the key structures is obtained. Finally the comprehensive assessment for nuclear reactor internals fatigue strength is implemented. These methods can be of important reference value for other reactor internals FIV studies.