To investigate the dynamic response and validate the structural integrity of a spent fuel transportation cask under the 9 m drop condition, a 1/3 scale model was utilized in a 9 m side drop test, considering the constraints of development cost and test facilities. The relationship between the response variables of the scaled model and the prototype model is obtained by Π theorem under impact drop conditions. The influencing parameters for the scale model of spent fuel transport cask drop were systematically discussed. Several numerical models of varying scales are used for verification. Finally, the 9 m drop test of the 1/3 scale model was conducted to compare the acceleration response and deformation of the 1/3 scale numerical model. The study concludes that the acceleration and deformation of the numerical model closely match the test results, and the numerical model of the prototype model represents the dynamic response of the prototype model. Furthermore, the study examined the reflections of the scale model in comparison to the real model, taking into account the dispersity of wood material and strain rate. The analysis and conclusions can be applied in engineering practice and can inspire subsequent cask designs, especially for a scaled model.

中文翻译：

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用于开发乏核燃料运输桶的比例模型的实验和数值研究

为了研究乏燃料运输桶在9 m跌落条件下的动态响应并验证结构完整性，考虑开发成本和测试设施的限制，采用1/3比例模型进行9 m侧跌落试验。通过冲击跌落条件下的Π定理得到了缩比模型和原型模型的响应变量之间的关系。系统讨论了乏燃料运输桶掉落缩尺模型的影响参数。使用几个不同尺度的数值模型进行验证。最后对1/3比例模型进行9 m跌落试验，比较1/3比例数值模型的加速度响应和变形情况。研究结论：数值模型的加速度和变形与试验结果吻合较好，原型模型的数值模型代表了原型模型的动态响应。此外，该研究还考虑了木质材料的分散性和应变率，检查了比例模型与真实模型的反映。分析和结论可应用于工程实践，并对后续的木桶设计，特别是缩比模型设计具有启发意义。