核一级承压设备疲劳分析方法

基于Miner线性累积损伤理论和雨流计数法,得到单载荷历程作用下疲劳分析的方法,并根据核一级承压设备的特点和核承压设备分析规范的要求,给出了一种适用于核一级承压设备疲劳分析的方法;结合设备实际运行情况,提出了瞬态分组组合的优化疲劳分析的方法,并给出一个案例.结果表明,瞬态分组组合使疲劳分析与设备实际运行情况更加接近,计算结果更加精确.

Fatigue Analysis Method of RCC-M Class 1 Pressure-Retaining Component

In this paper, a fatigue analysis method suitable for RCC-M class 1 component was presented based on Miner linear cumulative damage theory, rain-flow counting method and RCC-M requirement, it also provided an optimized fatigue analysis method-Group Combination method by considering the actual operation condition. One simulated example was induced to present this optimized method. The result shows that Group Combination method allows to perform the analysis with more reality to the real situation and allows to obtain the result with more accuracy.