Limit Load of Pressurized Cylinder-Nozzle Intersection Using Finite Element Method

摘要：

　　Pressure vessel contained with different nozzles which caused geometric discontinuity of the pressure vessel wall,which resulted in stress concentration around the nozzle.There may be the chances of failure of vessel junction,which was attributed to the high stress concentration.Therefore,detail stress distribution analysis need to be done for pressure vessel with the nozzle.Limit pressure at different location on lateral nozzle was determined by finite element method.Lateral nozzle was subjected to internal pressure and in-plane bending moment.Results found that plastic hinge occurred in the nozzle-vessel junction area shoulder.Plastic limit loading increased with the increasing of outside diameter and wall thickness of branch pipe when the size of primary piping was constant value,whereby the influence of outside diameter of branch pipe was more remarkable.Moreover,engineering estimation formulas of plastic limit in-plane bending moment was obtained based on plastic limit loading database.

关键词： Cylinder-nozzle intersection Finite element analysis Limit load Engineering estimation formulas

作者: Xiaohui Chen Shiyuan Liu Tao Hu Dongxue Pei

作者单位: School of Control Engineering,Northeastern University,Qinhuangdao 066004,China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 276-280

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）