HTR石墨堆内构件应力评价概率论和确定论方法比较

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基金项目:

国家重大科技专项经费资助项目(ZX06901)

Comparative Study on Probabilistic and Deterministic Methods for Stress Assessment of Reflector Graphite Bricks in HTR

Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

摘要: 为估算高温气冷堆中石墨构件的预期寿命,采用概率论方法和确定论方法对载荷作用结果进行评价。石墨材料强度的分散性对石墨部件的应力评价具有很大影响。本文取威布尔分布几何参数m为5、10和15计算分析,研究了概率论方法的失效概率和确定论方法应力限制安全系数的对应关系。
- 高温气冷堆 /
- 石墨堆内构件 /
- 概率论 /
- 确定论 /
- 应力评价
Abstract: Stress assessment of graphite components in high-temperature reactors should be carried out in order to estimate their lifetime.The assessment is affected greatly by dispersion of graphite strength,which can be described by Weibull distribution.The relationship was studied between failure probability of probabilistic method and stress limit of deterministic method,while shape parameter m of 2-parameter Weibull distribution is set as 5,10 and 15 respectively.
- High-temperature gas-cooled reactor /
- Graphite components /
- Probabilistic method /
- Deterministic method /
- Stress assessment