内伸式开孔接管应力分析及安全评定  

Stress analysis and safety assessment of the nozzle with the inward extended opening

作　　者：刘欢 张亚宁 吴喜军 LIU Huan;ZHANG Yaning;WU Xijun(College of Architectural Engineering,Yulin University,Yulin 719000,Shaanxi,China)

机构地区：[1]榆林学院建筑工程学院,陕西榆林719000

出　　处：《能源化工》2023年第2期81-84,共4页Energy Chemical Industry

基　　金：陕西省科技创新团队(2022TD-08);榆林市科技局项目(2019-101-7)。

摘　　要：以圆柱壳内伸式开孔接管为研究对象,采用ANSYS有限元分析软件,通过改变圆柱壳筒体内径、筒体厚度、接管外径、接管厚度、内压等操作参数,考察其对圆柱壳开孔接管区应力分布的影响,并进行安全评定。研究结果表明,圆柱壳内伸式开孔接管应力云图可以分为边缘区域和非边缘区域2个部分,边缘区域为薄膜应力和弯曲应力之和,非边缘区域为薄膜应力;最大应力随筒体内径、接管外径、内压的增大而增大;随筒体厚度和接管厚度的增大而减小;通过应力评定,最大应力处3条路径均能满足强度要求,不需要进行补强。Taking the cylindrical shell internally extended perforated nozzle as the research object,the influence of operating parameters such as cylindrical shell inner diameter,cylinder thickness,nozzle outer diameter,nozzle thickness,internal pressure on the stress distribution in the cylindrical shell perforated nozzle area is investigated by the ANSYS finite element analysis software,and the safety assessment is carried out.The research results show that the stress nephogram of the nozzle with an inward extending opening in the cylindrical shell can be divided into two parts:the edge region and the non edge region.The edge region is the sum of the membrane stress and the bending stress,and the non edge region is the membrane stress.The maximum stress increases with the increase of cylinder inner diameter,nozzle outer diameter and internal pressure,and decreases with the increase of cylinder thickness and nozzle thickness.Through stress assessment,the three paths at the maximum stress can meet the strength requirements without reinforcement.

关 键 词：ANSYS 开孔接管 圆柱壳 安全评定 

分 类 号：TQ055.8[化学工程]