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组件在反应堆运行过程中的结构完整性是反应堆安全运行的基本保障,堆内冷却剂流动很可能导致相邻组件间的相互碰撞,同时由于冷却剂的持续冲击,组件也可能产生周期性的受迫振动,这两种情况都会导致组件的破坏,进而影响到反应堆的正常运行。因此,组件的模态实验(固有振动特性测量)是组件设计验证实验中的关键一环,关系到组件的设计合理性及运行可靠性。
The structural integrity of the components during reactor operation is the basic guarantee for the safe operation of the reactor. Coolant flow in the reactor is likely to cause collisions between adjacent components, and the components may also experience cyclical effects due to the continuous impact of the coolant Forcing vibration, both cases will lead to the destruction of components, thereby affecting the normal operation of the reactor. Therefore, the modal experiment of components (measurement of natural vibration characteristics) is a key part in the component design verification experiment, which is related to the design rationality and operational reliability of the components.