Abstract
In order to construct the characteristics evaluation system of nuclear power valves, multiphysics analysis (including structural static analysis, thermal-mechanical coupling analysis, flow field analysis and Seismic analysis) are completed on a typical nuclear power valve based on finite element analysis (FEA). Binding the load standard of ASEM, each performance index of the nuclear power valve is tested and forecasted in order to verify the safety performance. Meanwhile, in view of the demands in multidisciplinary design optimization (MDO) of nuclear power valve products, the MDO model for valves is established, which integrates multi-characteristic simulation and multidisciplinary design of nuclear power valves together. The validity of the analysis method above is verified by the valve strength and sealing tests, which is of certain guiding significance for other class of nuclear power valves.
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