一、引言接管是压力容器部件中最基本的结构形式。国内外压力容器典型事故分析表明,压力容器失效发生在容器——接管的相贯处的几率最大。接管区是容器最危险的部位。循环应力实验表明,疲劳裂纹最先在该区形成。国内外对压力容器接管区的研究较多,也 I. Introduction Takeover is the most basic form of pressure vessel components. Typical accident analysis of pressure vessel at home and abroad shows that the failure of pressure vessel occurs most frequently at the intersection of vessel and vessel. The takeover zone is the most dangerous part of the container. Cyclic stress experiments show that fatigue cracks first formed in the area. At home and abroad more research on the pressure vessel takeover area, also