反应堆压力容器断裂力学分析中弹塑性有限元方法与工程方法的比较

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基金项目:

四川省青年科技基金项目（06ZQ026-036）

Comparison of Elastic-Plastic FE Method and Engineering Method for RPV Fracture Mechanics Analysis

National Key Laboratory of Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 通过ABAQUS程序对反应堆压力容器筒体裂纹进行了弹塑性断裂力学有限元分析,计算了在热冲击(PTS)瞬态作用下裂纹尖端的应力强度因子K_I、J积分。同时,与工程方法计算的结果进行了比较,结果表明:工程方法在PTS计算分析时较三维弹塑性断裂力学有限元方法的计算值偏大,计算结果保守。
- 反应堆压力容器 /
- 断裂力学 /
- 有限元 /
- J积分
Abstract: This paper described the FE analysis of elastic-plastic fracture mechanics for a crack in RPV belt line using ABAQUS code. It calculated and evaluated the stress intensity factor and J integral of crack under PTS transients. The result is also compared with that by engineering analysis method. It shows that the results using engineering analysis method is a little larger than the results using FE analysis of 3D elastic-plastic fracture mechanics, thus the engineering analysis method is conservative than the elastic-plastic fracture mechanics method.
- RPV /
- Fracture mechanics /
- FE /
- J integral