Shakedown Analysis of Pressurizer Surge Line Based on Elasto-Plastic Theory
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摘要: 按照RCC-M规范的要求,建立了秦山核电厂二期扩建工程反应堆稳压器波动管接管嘴的1/4模型,进行完全的循环弹塑性分析。文中的载荷循环次数为10次,采用最保守的方法外推接管嘴在循环载荷作用100次后的累积平均应变,即认为11~100步的应变增量与第10步相等,将前10步的累计应变与90个第10步的应变增量相加。计算结果表明:反应堆稳压器波动管接管嘴在最严厉的包络载荷作用下,结构的变形是收敛的,不会发生渐进性变形,即稳压器波动管的设计满足规范要求。
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关键词:
- 秦山核电厂二期扩建工程 /
- 核电厂 /
- 弹塑性分析 /
- 安定性
Abstract: According to the RCC-M rule,1/4 scale model of the nozzle of pressurizer surge lines in Qinshan Phase II project is established,and the elastoplastic analysis is conducted.10 cycles of loads is calculated firstly,and then the response of pipe after which endured 100 cycles is calculated by extrapolation.The assessment results show that the plastic instability of pressurizer surge line will not occur under the most severe cyclic load of load case II.-
Key words:
- Qinshan Phase II project /
- Nuclear power plant /
- Elasto-plastic analysis /
- Stability
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