文献类型：期刊文献

中文题名：内压下焊制管道三通塑性极限载荷有限元分析

英文题名：Finite Element Analysis of Plastic Ultimate Load for Welded T Junction Pipe Subjected to Internal Pressure

作者：轩福贞[1];刘长军[1];李培宁[1]

机构：[1]华东理工大学化机所,上海200237

年份：2001

卷号：38

期号：2

起止页码：45

中文期刊名：化工设备与管道

外文期刊名：Process Equipment & Piping

收录：CSTPCD

语种：中文

中文关键词：极限压力;有限元方法;三通管件;内压;焊接;塑性极限载荷

外文关键词：welded T junction pipe, ultimate pressure, finite element method

摘要：本文采用理想弹塑性材料及小变形假设的有限元技术，系统分析并验证管径比 d/D≥ 0. 5管道焊接三通的塑性极限压力及网格密度、单元类型和约束形式对数值解的影响，结果表明，在管径比 d/D≥ 0. 5的范围内，等径三通的极限承载能力优于 d/D=0. 83和 d/D=0. 65的主管径厚比 D/T相同的异径等强度三通，且在 D/T较大时尤为明显；采用小变形的分析方法能够得到满足工程要求的极限压力数值解。
In this paper, the finite element technique based on the hypotheses of ideal elastic plastic material and small defection was applied to systematically analyze the affections of plastic ultimate pressure, the type of the elements and constraints to the value of the numerical solution for welded pipe with T junction when the ratio of d/D is greater than or equal to 0.5. It is proved from the calculation and experiment that within the scope stated above, equal diameter T junction pipe has the better ability to sustain the pressure load than unequal diameter T junction pipes that have the diameter ratio d/D of 0.83 and 0.65 and have the same ratio of D/T. It is more apparent when the ratio of D/T is larger. The numerical solution that meets the requirement in engineering use can be obtained by use of the analysis method based on the hypothesis of small deflection.