Study on Modified θ-projection Creep Model of Reactor Pressure Vessel Steel SA533B
-
摘要: 反应堆严重事故下，压力容器存在因冷却不充分而蠕变失效的风险。基于修正θ-projection蠕变模型提出了一种针对反应堆压力容器钢SA533B的蠕变模型，该模型能够完整描述3段蠕变过程，模拟结果与实验结果蠕变曲线符合较好，同时可通过插值方法预测任意载荷下的蠕变行为。该模型可进一步用于压力容器失效的相关算例分析。
-
关键词:
- 修正θ-projection蠕变模型 /
- 蠕变模拟 /
- 反应堆压力容器 /
- 钢SA533B /
- 严重事故
Abstract: Under severe reactor accidents, there is a risk of creep failure of pressure vessel due to insufficient cooling. Based on the modified θ-projection creep model, a creep model for reactor pressure vessel steel SA533B is proposed. The model can completely describe the three-stage creep process, and the simulation results are in good agreement with the experimental result creep curve. At the same time, the creep behavior under any load can be predicted by interpolation method. The model can be further used in the relevant case analysis of pressure vessel failure. -
表 1 钢SA533B蠕变模型参数集
Table 1. Creep Model Parameters of Steel SA533B
序号 温度/K 应力/MPa θ1 θ2 θm θ3 θ4 1 900 69.7 1.508×10−3 5.273×10−4 1.040×10−7 5.313×10−5 1.120×10−5 2 900 140.1 1.885×10−3 1.318×10−3 8.388×10−7 1.389×10−3 8.446×10−5 3 1000 39 1.261×10−2 5.725×10−4 4.353×10−6 2.348×10−3 1.629×10−4 4 1000 55.6 3.331×10−2 7.038×10−4 4.960×10−6 3.391×10−3 1.937×10−4 5 1050 13.9 2.431×10−2 3.287×10−5 2.438×10−7 6.799×10−5 8.315×10−6 6 1050 26.3 3.329×10−2 3.395×10−5 3.023×10−6 5.174×10−3 6.418×10−5 7 1150 12.5 2.076×10−3 5.992×10−4 8.784×10−7 2.901×10−5 4.202×10−5 8 1150 26.5 1.084×10−2 9.838×10−3 1.129×10−5 4.107×10−3 1.949×10−4 9 1250 8 7.841×10−3 2.692×10−4 1.075×10−6 2.804×10−4 3.056×10−5 10 1250 12.6 1.904×10−2 2.296×10−3 9.741×10−6 1.056×10−2 4.336×10−4 11 1250 26.5 1.156×10−1 3.931×10−2 8.290×10−5 5.506×10−3 2.542×10−2 12 1373 3.5 1.188×10−2 2.467×10−5 1.018×10−6 1.594×10−4 4.164×10−5 13 1373 7 3.308×10−2 8.674×10−3 5.000×10−5 3.369×10−3 1.965×10−3 
下载: 导出CSV
-
[1] IMAOKA S. User creep subroutine STI0704A. ansys release: 11.0[R]. US: ANSYS, 2007: 1-8. [2] EVANS R W, PARKER J D, WILSHIRE B. The θ projection concept—A model-based approach to design and life extension of engineering plant[J]. International Journal of Pressure Vessels and Piping, 1992, 50(1-3): 147-160. doi: 10.1016/0308-0161(92)90035-E [3] DAY W D, GORDON A P. Life fraction hardening applied to a modified theta projection creep model for a nickel-based super-alloy[C]//Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Düsseldorf, Germany: ASME, 2014. [4] KUMAR M, SINGH I V, MISHRA B K, et al. A modified theta projection model for creep behavior of metals and alloys[J]. Journal of Materials Engineering and Performance, 2016, 25(9): 3985-3992. doi: 10.1007/s11665-016-2197-y [5] SONG M, XU T, WANG Q J, et al. A modified theta projection model for the creep behaviour of creep-resistant steel[J]. International Journal of Pressure Vessels and Piping, 2018, 165: 224-228. doi: 10.1016/j.ijpvp.2018.07.007 [6] FU C, CHEN Y D, YUAN X F, et al. A modified θ projection model for constant load creep curves-I. Introduction of the model[J]. Journal of Materials Science & Technology, 2019, 35(1): 223-230. [7] FU C, CHEN Y D, YUAN X F, et al. A modified θ projection model for constant load creep curves-II. Application of creep life prediction[J]. Journal of Materials Science & Technology, 2019, 35(4): 687-694. [8] YU P, MA W M. A modified theta projection model for creep behavior of RPV Steel 16MND5[J]. Journal of Materials Science & Technology, 2020, 47: 231-242. [9] REMPE J L, CHAVEZ S A, THINNES G L. Light water reactor lower head failure analysis: NUREG/CR-5642[R]. Washington: Nuclear Regulatory Commission, 1993. [10] ANSYS. ANSYS mechanical advanced nonlinear materials v16.0, lecture 2: rate dependent creep. ANSYS training materials[M]. US: ANSYS, 2015: 10-11. -
图(8) / 表(1)
计量
- 文章访问数: 305
- HTML全文浏览量: 121
- PDF下载量: 34
- 被引次数: 0
