| 乏燃料转运设备跌落冲击数值模拟研究 |
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| 引用本文： | 袁亮,杨洁.乏燃料转运设备跌落冲击数值模拟研究[J].核动力工程,2022,43(2):122-125. |
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| 作者姓名： | 袁亮 杨洁 |
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| 作者单位： | 苏州热工研究院有限公司，江苏苏州，215000 |
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| 摘 要： | 乏燃料转运设备核电厂内运输跌落分析是整体结构安全分析中最严苛的工况，为了解决设备跌落的动力学冲击分析评价问题，使用有限元分析模拟软件LS-DYNA对乏燃料转运设备进行数值模拟，针对典型乏燃料转运设备的跌落进行建模，并结合实际厂址条件，跌落的接触地面采用Holmquist-Johnson-Cook（HJC）模型，通过模拟计算，获得设备加速度曲线和关键位置形变量，研究结果表明:在结合厂内实际地面条件的情况下，贮存套筒变形量受跌落角度影响很大，在贮存运输过冲中应避免设备竖直姿态的跌落。本文的分析评价方法可以为乏燃料转运设备的自主化设计提供技术支持和理论依据。
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| 关 键 词： | LS-DYNA 跌落冲击 动力学 非线性 |
| 收稿时间： | 2021-01-25 |
Study on Numerical Simulation of Drop Impact of Spent Fuel Transfer Equipment |
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| Affiliation: | Suzhou Nuclear Power Research Institute, Suzhou, Jiangsu, 215000, China |
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| Abstract: | Analysis of drop of spent fuel transfer equipment in nuclear power plant is the most stringent condition in overall structural safety analysis. In order to solve the problem of dynamic impact analysis and evaluation of equipment drop, the finite element analysis and simulation software LS-DYNA is used to numerically simulate the spent fuel transfer equipment, and model the drop of typical spent fuel transfer equipment. Combined with the actual plant site conditions, the drop contact ground adopts Holmquist-Johnson-Cook (HJC) model. Through simulation calculation, the acceleration curve of equipment and the deformation variables of key position are obtained. The results show that the deformation of the storage sleeve is greatly affected by the drop angle when combined with the actual ground conditions in the plant. The vertical drop of the equipment shall be avoided in the overshoot of storage and transportation. The analysis and evaluation method in this paper can provide technical support and theoretical basis for the autonomous design of spent fuel transfer equipment. |
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