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首页> 外文期刊>International Journal of Modern Physics, B. Condensed Matter Physics, Statistical Physics, Applied Physics >Impact analysis and test for the spacer grid assembly of a nuclear fuel assembly
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Impact analysis and test for the spacer grid assembly of a nuclear fuel assembly

机译：核燃料组件的隔栅组件的冲击分析和测试

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摘要

A spacer grid assembly is one of the main structural components of the nuclear fuel assembly for a Pressurized light Water Reactor (PWR). The spacer grid assembly supports and aligns the fuel rods, guides the fuel assemblies past each other during a handling and, if needed, sustains lateral seismic loads. The ability of a spacer grid assembly to resist these lateral loads is usually characterized in terms of its dynamic and static crush strengths, which are acquired from tests. In this study, a finite element analysis on the dynamic crush strength of spacer grid assembly specimens is carried out. Comparisons show that the analysis results are in good agreement with the test results to within about a 30% difference range. Therefore, we could predict the crush strength of a spacer grid assembly in advance, before performing a dynamic crush test. And also a parametric study on the crush strength of a spacer grid assembly is carried out by adjusting the weld penetration depth for a sub-sized spacer grid, which also shows a good agreement between the test and analysis results.
机译：间隔栅组件是用于压水反应堆（PWR）的核燃料组件的主要结构部件之一。间隔栅组件支撑并对准燃料棒，在搬运过程中引导燃料组件经过彼此，并在需要时承受横向地震载荷。间隔栅组件抵抗这些侧向载荷的能力通常根据其动态和静态抗压强度来表征，这些强度是从测试中获得的。在这项研究中，对隔栅组件的动态抗压强度进行了有限元分析。比较表明，分析结果与测试结果非常吻合，差异在30％左右。因此，我们可以在执行动态抗压测试之前，预先预测隔栅组件的抗压强度。通过调整小尺寸隔栅的焊缝熔深，对隔栅组件的抗压强度进行了参数研究，这也表明了测试和分析结果之间的良好一致性。

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