研究外压下螺旋蒸汽发生器管的几何形状和材料特性对塌陷压力的影响

IF 2.6 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Engineering and Technology Pub Date : 2024-07-15 DOI:10.1016/j.net.2024.07.033
Gyo-Geun Youn , Kwanghyun Ahn , Myeong-Woo Lee
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引用次数: 0

摘要

本文进行了一项数值研究,分析了承受外部压力的一次通过式蒸汽发生器管的几何形状(管厚、椭圆度和螺旋直径)和材料特性对塌陷压力的影响。蒸汽发生器管的外径固定为 17 毫米,管厚分别为 2.5 毫米、2.29 毫米和 1.27 毫米。考虑了 0%、4% 和 8% 三种情况下的椭圆度,以及三种情况下的螺旋直径:577 毫米、937 毫米和 1297 毫米。作为材料属性,考虑了忽略塑性硬化的弹性完全塑性属性和反映塑性硬化的实际材料属性。在本文考虑的螺旋直径(Dm/do ≥ 34)下,螺旋弯曲导致的塌陷压力对椭圆度和两种材料特性都没有影响。另一方面,当出现椭圆度(0%)时,壁厚会根据材料特性影响塌陷压力。这是因为厚度不同,塌陷机理也不同。
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Study on the effect of geometry and material property on collapse pressure of a helical steam generator tube under external pressure
In this paper, a numerical study was conducted to analyze the effect of the geometry (tube thickness, ovality, and helical diameter) and material properties of once through steam generator tubes subjected to external pressure on collapse pressure. The outer diameter of the steam generator tube was fixed at 17 mm, and the tube thickness was changed to 2.5 mm, 2.29 mm, and 1.27 mm. Ovality was considered for three cases of 0 %, 4 %, and 8 %, and three cases for helical diameter were considered: 577 mm, 937 mm, and 1297 mm. As material properties, elastic perfectly plastic property that ignores plastic hardening and real material property that reflect plastic hardening were considered. At the helical diameter (Dm/do ≥ 34) considered in this paper, the effect of collapse pressure due to helical bending did not appear on ovalities and both material properties. On the other hand, the wall thickness affected the collapse pressures according to the material properties when ovality occurred (>0 %). This is explained because the collapse mechanism varies depending on the thickness.
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来源期刊
Nuclear Engineering and Technology
Nuclear Engineering and Technology 工程技术-核科学技术
CiteScore
4.80
自引率
7.40%
发文量
431
审稿时长
3.5 months
期刊介绍: Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development
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