스마트원자로 노심지지배럴집합체 축소모형의 등가동특성 모델

Korea Atomic Energy Research Institute develops the SMART (System integrated Modular Advanced ReacTor), an environment-friendly nuclear reactor for the generation of electricity and the desalination. SMART reactors could be exposed to various external and internal loads caused by seismic and coolant flows. In this study, the research is investigated for dynamic characteristics in reactor internal, Core Support Barrel Assembly(CSB). The simplified scaled model of CSB is designed for the modal testing and 3D Solid model is built. finally, Equivalent dynamic model is developed using the verified 3D Solid model. In this procedure, the variables of SDC(Shear Deflection Coefficient), Young's modulus, Spring coefficient is considered, and Equivalent dynamic model is updated for accuracy by optimization method which is kind of a sub-problem method.