摘要
压力容器接管嘴位置结构和载荷情况比较复杂,若假想缺陷位于压力容器进口接管内隅角位置,在考虑接管载荷作用时,裂纹为复合型裂纹。建立含裂纹的三维有限元模型,分析在接管载荷单独作用、内压与接管载荷共同作用下裂纹尖端应力强度因子的分布和变化规律。分析结果表明,在仅考虑接管载荷时,进口接管内隅角位置应力强度因子KI、KII和KIII都比较小,应力强度因子近似对称分布;内压对裂纹尖端的应力强度因子KII和KIII基本没有影响。
The structure and load is complex at the nozzle of pressure vessel, a crack is supposed in the comer angular of the RPV inlet nozzle and it is a mixed model crack while considering the pipe load. A three-dimensional finite element model with the supposed crack is established and the SIF （Stress Intensity Factor） distribution and variation of the crack tip with pipe load and internal pressure is analyzed. The results show that the SIF is approximately in symmetrical distribution in the crack tip and the SIF KI, KII, KIII are small with pipe load, and internal pressure do not affect the SIF Ku and Km of the crack tip.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2015年第5期120-123,共4页
Nuclear Power Engineering
