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CARR全堆芯流致振动试验是在CARR堆1:1试验模型上,进行堆内构件流致振动试验,属于工程验证试验。CARR堆与压水堆结构不同,堆芯结构较小,柔性件更多,流场复杂,堆芯流速高,流致振动问题较为突出,因此,通过流致振动试验确定堆内各重要构件的振动特性和在各种运行工况下的流致振动响应(频率、应变、振幅),找出本体结构设计的薄弱环节,以便为可能的设计修改提供参考依据,按照有关规范评定各部件在设计寿期内因流致振动而产生的疲劳特性以及为安全评审提供重要依据。
The CARR whole-core flow induced vibration test is a flow-induced vibration test of in-reactor components on a CARR reactor 1: 1 test model, which belongs to the engineering verification test. CARR reactor and PWR are different in structure, core structure is smaller, more flexible parts, flow field is complex, the core flow velocity is high, flow-induced vibration problem is more prominent, therefore, through flow-induced vibration test to determine the various components of the reactor Vibration characteristics and flow-induced vibration response (frequency, strain, amplitude) in various operating conditions to identify the weak links in the design of the structure of the body in order to provide a reference for the possible design modification, in accordance with relevant norms to assess the design of each component The fatigue characteristics caused by the vibration caused by the flow and the important basis for the safety assessment.