A simplified calculation method and algorithm for mechanical responses of nuclear containment

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2024-10-30 DOI:10.1016/j.pnucene.2024.105513

Qiaoqiao Fan , Menghong Xie , Zheng Lu , Di Jiang , Di Yao , Mengyan Song

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引用次数: 0

Abstract

To address the time-consuming and costly problems associated with the analysis methods primarily adopted at present (experimental test and numerical simulation), a simplified calculation method and algorithm are proposed. According to the theoretical solution of the thin-walled cylinder under inner pressure, the relationship between stress and strain is analyzed theoretically and the formula for calculating the mechanical response of the containment is derived and established with consideration of the material properties of containment's each component. Finally, the corresponding software, named as NCMC, is proposed. Three different containment types are selected for verification and these cases provide both numerical data and measured data. The comparison results demonstrate that NCMC can have good accuracy with exceptionally high computational efficiency, as well as it is highly flexible and has a significantly wider application scenario. NCMC is put forward to provide a relatively simplified method compared with traditional finite element (FE) software. This simplified calculation algorithm requires only a few seconds to a few minutes to obtain mechanical response results, which has significant advantages as FE software takes days to finish the same analysis. Hence, NCMC can have a promising application.

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核安全壳机械响应的简化计算方法和算法

针对目前主要采用的分析方法（实验测试和数值模拟）耗时长、成本高的问题，提出了一种简化的计算方法和算法。根据内压下薄壁圆柱体的理论解，从理论上分析了应力和应变之间的关系，并结合安全壳各部件的材料特性，推导和建立了安全壳力学响应的计算公式。最后，提出了相应的软件，命名为 NCMC。我们选择了三种不同类型的安全壳进行验证，这些案例同时提供了数值数据和测量数据。对比结果表明，NCMC 不仅具有很高的计算效率，而且具有很高的精确度，同时还具有很高的灵活性和更广阔的应用前景。与传统的有限元（FE）软件相比，NCMC 提供了一种相对简化的方法。这种简化的计算算法只需要几秒到几分钟就能得到机械响应结果，这与 FE 软件需要几天才能完成同样的分析相比具有显著优势。因此，NCMC 具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.