Determination of ovality and wall thinning effects on B2 stress indices for pipe bends under in-plane closing bending moment

被引：11

作者：

Balakrishnan, S. ^{[1
]}

Veerappan, A. R. ^{[1
]}

Shanmugam, S. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Mech Engn, Tiruchirappalli 620015, Tamil Nadu, India

来源：

SIMULATION-TRANSACTIONS OF THE SOCIETY FOR MODELING AND SIMULATION INTERNATIONAL | 2019年 / 95卷 / 02期

关键词：

Twice-elastic-slope method; pipe bends; B-2 stress index; ovality; in-plane closing moment; PLASTIC COLLAPSE LOADS; INTERNAL-PRESSURE; LIMIT LOADS; ELBOWS;

D O I：

10.1177/0037549718769738

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The present work evaluates the combined effect of variable wall thickness and ovality on the B-2 stress index of bends under in-plane closing moment using finite element analysis. The material chosen is assumed to be elastic-perfectly plastic and large geometrical change effect was considered. Moment rotational curves were drawn for each bend model and from these curves the critical collapsing limit loads were determined by using the twice-elastic-slope method. The existence of ovality in the pipe bends has a major effect on B-2 stress index, while thinning has no effect. A general closed form equation for the B-2 stress index is presented for bends subjected to an in-plane closing moment.

引用

页码：185 / 192

页数：8

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