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Limit loads for piping branch junctions under internal pressure and in-plane bending - Extended solutions

Authors
Kim, Yun-JaeLee, Kuk-HeePark, Chi-Yong
Issue Date
Jun-2008
Publisher
ELSEVIER SCI LTD
Keywords
finite element analysis; branch junction; internal pressure; in-plane bending; limit load
Citation
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, v.85, no.6, pp.360 - 367
Indexed
SCIE
SCOPUS
Journal Title
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
Volume
85
Number
6
Start Page
360
End Page
367
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123473
DOI
10.1016/j.ijpvp.2007.11.007
ISSN
0308-0161
Abstract
The authors have previously proposed plastic limit load solutions for thin-walled branch junctions under internal pressure and in-plane bending, based on finite element (FE) limit loads resulting from three-dimensional (3-D) FE limit analyses using elastic-perfectly plastic materials [Kim YJ, Lee KH, Park CY. Limit loads for thin-walled piping branch junctions under internal pressure and in-plane bending. Int J Press Vessels Piping 2006;83:645-53]. The solutions are valid for ratios of the branch-to-run pipe radius and thickness from 0.4 to 1.0, and for the mean radius-to-thickness ratio of the run pipe from 10.0 to 20.0. Moreover, the solutions considered the case of in-plane bending only on the branch pipe. This paper extends the previous solutions in two aspects. Firstly, plastic limit load solutions are given also for in-plane bending on the run pipe. Secondly, the validity of the proposed solutions is extended to ratios of the branch-to-run pipe radius and thickness from 0.0 to 1.0, and the mean radius-to-thickness ratio of the run pipe from 5.0 to 20.0. Comparisons with FE results show good agreement. (c) 2007 Elsevier Ltd. All rights reserved.
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