内压圆筒开孔接管长度对有限元计算结果的影响  

Influence of Nozzle Length on the Finite Element Calculation for Cylindrical Shells under Internal Pressure

作　　者：刘海刚[1] 马嫄情 苏文献[3] 朱惠春[1] 张世程[1] 

机构地区：[1]中国船舶重工集团公司第七一一研究所,上海201108 [2]开利空调冷冻研发管理(上海)有限公司,上海201206 [3]上海理工大学化工过程机械研究所,上海200093

出　　处：《压力容器》2013年第3期20-24,共5页Pressure Vessel Technology

摘　　要：圆柱筒体开孔接管结构是压力容器和管道系统较常用的结构之一,采用有限元进行强度分析时,接管长度的选取对计算结果有很大影响。分五组共计84个模型对不同接管直径、壁厚,不同筒体直径、壁厚条件下内压圆筒上不同接管长度对有限元计算结果的影响进行分析比较,结果表明,有限元计算的模型选取上,接管长度需远大于2.5^(1/2)(Rt)。Opening - nozzle structure of cylindrical shell is usually used in the pressure vessel and the pipe system. The length of the nozzle has great influence on the stress results by using finite element meth- od. This article applies 84 models in five groups for comparative the influence of the different nozzle length to the finite element result under different nozzle diameter and nozzle thickness, different shell diameter and shell thickness. The result shows that the length of the nozzle is much more than 2. 5 √Rt for the building of the finite element model.

关 键 词：内压圆筒 接管长度 有限元分析 

分 类 号：TH123[机械工程—机械设计及理论] TQ053.6[化学工程]