核反应堆堆芯吊篮压紧弹簧松弛特性

杨泰波, 刘佳鑫, 彭志科, 罗能, 刘才学

Relaxation Characteristics of Hold-Down Spring of Core Support Barrel in Nuclear Reactor

YANG Taibo, LIU Jiaxin, PENG Zhike, LUO Neng, LIU Caixue

表3 压紧弹簧松弛时的堆芯吊篮一阶梁式模态频率拟合值

Tab.3 Fitting values of first-order beam mode frequency of CSB with relaxation of HDS

序号 压紧弹簧 松弛程度/% 堆芯吊篮一阶梁式频率 仿真值/Hz 试验值/Hz 拟合值/Hz 1 0 10.62 10.4 10.400 2 5 10.31 10.110 3 10 9.95 9.770 4 15 9.56 9.4 9.400 5 20 9.17 9.020 6 30 8.23 8.1 8.100 7 40 7.16 7.115 8 50 5.98 6.1 6.100 9 60 4.76 5.005 10 70 3.39 3.760