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针对铍材的机械性能和辐照特性,在考虑机械应力、热应力、辐照肿胀应力以及按工况进行载荷组合的基础上,对辐照后铍构件的应力进行分析计算,并采用最大拉应力理论进行评价。以高通量工程试验堆(HFETR)铍组件为例,采用ABAQUS软件计算其关键部件铍套管的应力状态。结果显示,其最大主应力远小于材料拉伸强度,从应力破坏的角度看,该铍组件仍可继续使用较长时间。
According to the mechanical properties and irradiation characteristics of beryllium material, the stress of beryllium after irradiation is calculated and analyzed considering mechanical stress, thermal stress, irradiation swelling stress and load combination according to working conditions, Stress theory to evaluate. Taking the high-throughput HFETR beryllium component as an example, the stress state of the beryllium bushing, a key component of the beryllium alloy, was calculated by using ABAQUS software. The results show that the maximum principal stress is far less than the tensile strength of the material, and the beryllium component can still be used for a long time from the viewpoint of stress destruction.