核压力部件缺陷全息无损检测的有限元分析  

The Finite Element Analysis of Holographic Nondestructive Testing for Pressure-Containing Member

作　　者：熊渊博[1] 洪力[1] 

机构地区：[1]湖南大学工程力学系,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2000年第4期17-21,共5页Journal of Hunan University:Natural Sciences

摘　　要：针对核压力部件所含典型缺陷 ,建立简化缺陷的力学模型 ,采用有限元数值计算法计算和讨论了两种极端缺陷的大小与深度 ,材料性质及内压值之间的关系 .为了考查其计算的可靠性 ,文中对所建立的缺陷力学模型按 Timoshenko理论进行计算和在预制缺陷的钢容器上进行双曝光全息干涉实验 .理论和实验结果表明 ,所做缺陷模型的有限元分析计算结果有足够的精度 ,且计算数据可为核压力部件全息无损检测研究提供参考 .To counter representative defects in a pressure containing member,a simplified defect mechanical model is established and the relationships of the size and depth of two extreme defects,properties of material and internal pressure are calculated and discussed by use of finite element numerical method.To evlauate reliability of the calculation,the simplified defect mechanical model is also calculated by the use of Timoshenko thoery,and double exposure holographic interference experiment is made on a steel container with prefabricated defect.The results of theory and experiment indicate that the calculation of finite element analysis of the defect model possesses reasonable precision.And calculation value would be for reference during the pressure holographic nondestructive testing.

关 键 词：缺陷检测 全息干涉术 有限元法 核电站 

分 类 号：TM623[电气工程—电力系统及自动化]