Closed-Form Collapse Moment Equations of Elbows Under Combined Internal Pressure and In-Plane Bending Moment-Reference-Cited by-同舟云学术

Closed-Form Collapse Moment Equations of Elbows Under Combined Internal Pressure and In-Plane Bending Moment

Published:2000-03-07 Issue:4 Volume:122 Page:431-436
ISSN:0094-9930
Container-title:Journal of Pressure Vessel Technology
language:en
Short-container-title:

Author:

Chattopadhyay J.¹,Nathani D. K.²,Dutta B. K.¹,Kushwaha H. S.¹

Affiliation:

1. Reactor Safety Division, Hall-7, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, Maharastra, India

2. Reactor Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, Maharastra, India

Abstract

Elastic-plastic finite element analysis has been carried out to evaluate collapse moments of six elbows with elbow factors varying from 0.24 to 0.6. The loading conditions of combined in-plane closing/opening bending moment and varying degree of internal pressure are considered in the analysis. For each case, collapse moment is obtained by twice elastic slope method from the moment versus end-rotation curve. Based on these results, two closed-form equations are proposed to evaluate the collapse moments of elbows under combined internal pressure and in-plane closing and opening bending moment. [S0094-9930(00)00103-7]

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Link

http://asmedigitalcollection.asme.org/pressurevesseltech/article-pdf/122/4/431/5740371/431_1.pdf

Reference15 articles.

1. Marcal, P. V. , 1967, “Elastic-Plastic Behavior of Pipe Bends With In-Plane Bending,” J. Strain Anal., 2, No. 1, pp. 84–90.

2. Spence, J., and Findlay, G. E., 1973, “Limit Load for Pipe Bends Under In-Plane Bending,” Proceedings of the 2nd International Conference on Pressure Vessel Technology, San Antonio, pp. 393–399.

3. Calladine, C. R. , 1974, “Limit Analysis of Curved Tubes,” J. Mech. Eng. Sci. Inst. Mech. Eng., 16, No. 2, pp. 85–87.

4. Goodall, I. W., 1978a, “Large Deformations in Plastically Deforming Curved Tubes Subjected to In-plane Bending,” Research Division Report RD/B/N4312, Central Electricity Generating Board, UK.

5. Goodall, I. W., 1978b, “Lower Bound Limit Analysis of Curved Tubes Loaded by Combined Internal Pressure and In-plane Bending Moment,” Research Division Report RD/B/N4360, Central Electricity Generating Board, UK.

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