大开孔焊制异径三通的极限载荷  

Limit Load for Large Opening Welded Tee with Different diameters

作　　者：张学伟[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《化工设备与管道》2013年第6期68-71,共4页Process Equipment & Piping

摘　　要：采用理想弹塑性有限元法,借助ANSYS对承受内压的大开孔焊制异径三通的极限载荷进行了模拟计算,并运用零曲率准则、双切线交点准则及两倍弹性斜率准则求取结构的极限压力。此外,还计算了主管和支管在不同厚度下的极限内压,对大开孔异径三通的设计计算提供参考。By using ANSYS, numerical simulation of limit load was carried out based on ideal elastic-plastic finite element method for large opening welded tee with different diameter. With zero-curvature criteria, double tangent intersection standard and twice elastic slope principle, the limit load for this structure was calculated. Otherwise, the limit internal pressures for the condition that host pipe and branch have different thicknesses were also calculated. What presented herein can be referenced for the design of large opening welded tee with different diameter.

关 键 词：理想弹塑性 大开孔 极限载荷 零曲率准则 双切线交点准则 两倍弹性斜率准则 

分 类 号：TQ050.2[化学工程] TH12[机械工程—机械设计及理论]