考虑热分层效应的格林函数法在疲劳监测系统快速计算中的应用  

Application of Green Function Method Considering Thermal Stratification Effect in Rapid Calculation of Fatigue Monitoring System

作　　者：陈蓉 章贵和 梁恩铭 Chen Rong;Zhang Guihe;Liang Enming(State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment,Shenzhen,Guangdong,518172,China;China Nuclear Power Engineering Co.,Ltd.,Shenzhen,Guangdong,518172,China)

机构地区：[1]核电安全技术与装备全国重点实验室,广东深圳518172 [2]中广核工程有限公司,广东深圳518172

出　　处：《核动力工程》2024年第4期150-154,共5页Nuclear Power Engineering

摘　　要：针对在疲劳监测系统中考虑热分层效应的情况下如何实现快速计算展开了分析。提出了一种考虑热分层效应的格林函数计算方法,同时使用该方法针对波动管弯头模型在假定瞬态下的热分层应力进行了计算研究并与有限元方法进行了对比,验证本文方法的合理性和准确性。结果表明,本文提出的在格林函数基础上叠加考虑热分层效应的计算方法具有高效、快速、准确的特点,可应用于弯头拐角处的应力苛刻位置。目前该方法已应用于核电厂设备的疲劳监测系统。This paper analyzes how to realize fast calculation when thermal stratification effect is considered in fatigue monitoring system.A new Green's function considering thermal stratification effect is proposed.At the same time,the thermal stratification stress of elbow model under assumed transient state is calculated by this method and compared with the finite element method,which shows that this method is reasonable and accurate.The results show that the calculation method based on Green's function and considering thermal stratification is efficient,fast and accurate,and can be applied to the stress servere position at the corner of elbow.At present,the method has been applied to the fatigue monitoring system of nuclear power plant equipment.

关 键 词：热分层 格林函数法 疲劳监测系统 

分 类 号：TL334[核科学技术—核技术及应用]