Effective mass and damping of submerged structures
Effective mass and damping of submerged structures
复制标题
水下结构的有效质量和阻尼
DOI：
--
复制
发表时间：
1978
期刊：
影响因子：
--
通讯作者：
R. G. Dong
中科院分区：
文献类型：
--
作者：
R. G. Dong
在发生地震或其他动态现象时，对核电站安全至关重要的各种结构必须保持运转。其中一些重要结构，例如乏燃料储存架、主减压阀管线和反应堆容器的内部结构，都被淹没在水中。动态分析必须包括水的力和阻尼效应。该报告为评估设计分析中当前使用的各种建模假设提供了技术基础。当前的设计分析技术和文献中的信息构成了我们的结论和建议的基础。我们调查了32家工业企业，并审查了49个技术参考。我们尽可能地将各种理论与已发表的实验结果进行比较。我们的研究结果一般适用于理想化的结构，如单个孤立的成员，阵列的成员，和同轴圆柱体。我们通过观察和建议将这些发现与实际反应堆结构联系起来。只要有可能，我们建议一个明确的方法来评估这些结构上的水动力的影响。
Various structures important for safety in nuclear power plants must remain functioning in the event of an earthquake or other dynamic phenomenon. Some of these important structures, such as spent-fuel storage racks, main pressure-relief valve lines, and internal structures in the reactor vessel, are submerged in water. Dynamic analysis must include the force and damping effects of water. This report provides a technical basis for evaluating the wide variety of modeling assumptions currently used in design analysis. Current design analysis techniques and information in the literature form the basis of our conclusions and recommendations. We surveyed 32 industrial firms and reviewed 49 technical references. We compare various theories with published experimental results wherever possible. Our findings generally pertain to idealized structures, such as single isolated members, arrays of members, and coaxial cylinders. We relate these findings to the actual reactor structures through observations and recommendations. Whenever possible we recommend a definite way to evaluate the effect of hydrodynamic forces on these structures.