Dynamic analysis of a large-scale fast reactor core under seismic condition
文献类型：期刊论文
| 作者 | Liu BS(刘宝收)2; Peng Q(彭庆)1,2; Liu XM(刘小明)1,2
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| 刊名 | NUCLEAR ENGINEERING AND DESIGN
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 432页码:14 |
| 关键词 | Reactor core Nonlinear contact Modal superposition method Seismic analysis |
| ISSN号 | 0029-5493 |
| DOI | 10.1016/j.nucengdes.2025.113834 |
| 通讯作者 | Peng, Qing(qpeng@imech.ac.cn) ; Liu, Xiaoming(xiaomingliu@imech.ac.cn) |
| 英文摘要 | Seismic analysis of the entire Fast Reactor (FR) core is crucial for ensuring their structural integrity during earthquakes, particularly for large-scale FR cores. A typical FR core consists of hundreds of core assemblies, each with small gaps, and these core assemblies are likely to collide with neighboring ones. The large number of nonlinear contact pairs presents a significant challenge for both expensive experimental testing and numerical simulations, making them nearly impractical for seismic assessment of the FR core. To Address this issue, we propose a novel dynamic model for the seismic analysis of large-scale FR cores. By using a contact model, we decouple the nonlinear response of the large-scale core into a series of linear responses from individual assemblies, where the spring forces are treated as external forces. To improve computational efficiency, we employ the modal superposition method to reduce the dynamic response of a single-assembly linear system to solutions of multiple single-degree-of-freedom systems. Compared to commercial finite element simulations, our proposed computational framework demonstrates higher efficiency. Our results show that deflection and impact strength are positively correlated with both layer number and gap size. Moreover, the impact force of core assemblies located in the outer layers is significantly higher than that of the assemblies in the inner layers of the FR core. |
| 分类号 | 二类/Q1 |
| WOS关键词 | BEHAVIOR |
| 资助项目 | National Key R & D Program for International Cooperation Project of China[2022YFE0124700] ; Key R & D Development Program of China[2020-JCJQ-ZD-254] ; National Natural Science Foundation of China[12022210] ; National Natural Science Foundation of China[12032001] ; National Natural Science Foundation of China, Basic Science Center Program for Multi-scale Problems in Nonlinear Mechanics[11988102] ; Youth Innovation Promotion Association CAS[2018022] |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001396325300001 |
| 资助机构 | National Key R & D Program for International Cooperation Project of China ; Key R & D Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China, Basic Science Center Program for Multi-scale Problems in Nonlinear Mechanics ; Youth Innovation Promotion Association CAS |
| 其他责任者 | Peng, Qing ; Liu, Xiaoming |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98104]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.UCAS, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu BS,Peng Q,Liu XM. Dynamic analysis of a large-scale fast reactor core under seismic condition[J]. NUCLEAR ENGINEERING AND DESIGN,2025,432:14. |
| APA | 刘宝收,彭庆,&刘小明.(2025).Dynamic analysis of a large-scale fast reactor core under seismic condition.NUCLEAR ENGINEERING AND DESIGN,432,14. |
| MLA | 刘宝收,et al."Dynamic analysis of a large-scale fast reactor core under seismic condition".NUCLEAR ENGINEERING AND DESIGN 432(2025):14. |
入库方式： OAI收割
来源：力学研究所
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