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基于光滑粒子和有限元耦合算法,利用显式动力学分析软件LS-DYNA,对装载放射性废液的车载式废树脂接收装置在三种不同跌落方式下的跌落冲击过程进行了数值分析。以装置水平跌落为典型算例,对其在跌落过程中所受的动态激励、装置的压力变化和装置的应力状态进行了分析。结果表明,光滑粒子和有限元耦合算法对于解决装载放射性废液的运输容器在跌落冲击过程中流固耦合问题是有效的。同时,基于有限元分析结果,提出了一种按照RCC-M《压水堆核岛机械设备设计和建造规则》等规范对放射性物质运输容器跌落冲击过程进行应力强度评定的方法,并依据该方法对装置的结构强度进行了评定,结果显示装置在三种不同跌落方式下的应力强度均满足要求。
Based on the coupled algorithm of smooth particle and finite element method, the dynamic impact analysis software LS-DYNA was used to analyze the drop impact process of vehicle-mounted waste resin receiving device loaded with radioactive waste liquid in three different drop modes. Taking the device falling horizontally as a typical example, the dynamic excitation during dropping, the pressure change of the device and the stress state of the device were analyzed. The results show that the smooth particle and finite element coupling algorithm is effective to solve the problem of fluid-structure coupling during drop impact in the transport container with radioactive waste liquid. At the same time, based on the results of finite element analysis, a method for evaluating the stress intensity of drop impact process of radioactive material transport container according to the RCC-M Code for Design and Construction of Mechanical Equipment for PWR Nuclear Island was proposed. According to this method The structural strength of the device was evaluated and the results showed that the stress intensity of the device in three different drop modes met the requirements.