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本项研究采用试验研究和理论分析相结合的方法对堆内构件流致振动进行了研究。根据流致振动试验的相似准则,完成了1:5试验模型设计,按照美国核管会RG1.20的要求进行试验研究及有限元分析计算。试验研究解决了传感器布置的多项技术难题,获得了大量、完整、可靠的试验数据。结合流致振动试验数据对堆内构件进行流致振动响应计算。最后利用试验和计算分析相结合的方法完成了堆内构件关键部件流致振动疲劳强度的评估。研究方法对后续的流致振动试验研究具有重要的参考价值。
In this study, the flow induced vibration of the in-pile components was studied by a combination of experimental research and theoretical analysis. According to the similarity criterion of flow-induced vibration test, the 1: 5 experimental model was designed, and the experimental research and finite element analysis were carried out according to the requirements of the US Nuclear Regulatory Commission RG1.20. The experimental research solves many technical problems of the sensor arrangement and obtains a large amount of complete and reliable test data. Based on the flow-induced vibration test data, the flow-induced vibration response of the reactor is calculated. Finally, the combination of experimental and computational analysis was used to evaluate the flow-induced fatigue strength of key components in the reactor. The research method has important reference value for the follow-up flow-induced vibration test research.