Journal ArticleDOI
Finite element stress analysis of an equal diameter branch pipe intersection subjected to out-of-plane and twisting moments
TLDR
In this article, the authors used the BERSAFE finite element computer program to model an equal diameter branch pipe intersection of mean diameter/thickness ratio 24.5 and compared the predicted stresses with results from tests on a 254 mm (10 inch) diameter welded branch junction, and also with the values from the current UK power piping code BS 806.Abstract:
The authors have used the BERSAFE finite element computer program to model an equal diameter branch pipe intersection of mean diameter/thickness ratio 24.5. Previous results for internal pressure and the two in-plane bending moments are augmented by the present results for the two out-of-plane and the two twisting moment load categories. The predicted stresses are compared with results from tests on a 254 mm (10 inch) diameter welded branch junction, and also with the values from the current UK power piping code BS 806.read more
Citations
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Junctions in shell structures: A review
TL;DR: In this article, the authors review different theoretical, numerical, and experimental approaches to modelling, analyses and design of the compound shell structures with junctions, and present alternative forms of boundary, continuity and jump conditions at the singular midsurface curves modelling the shell junction.
Journal ArticleDOI
Effective stress factors for piping branch junctions due to internal pressure and external moment loads
TL;DR: In this paper, finite element data have been combined with experimental data to produce design curves and an associated equation, which will allow the calculation of the effective stress factors (ESF) for a wide range of piping branch junctions for both internal pressure and all six external moment load categories.
Journal ArticleDOI
A new methodology for the prediction of burst pressure for API 5L X grade flawless pipelines
TL;DR: It can be concluded that the burst pressure prediction empirical formula derived by following the proposed methodology can calculate an accurate burst pressure for the API 5L X grade flawless pipelines.
Journal ArticleDOI
Stress analysis of nonradial cylindrical shell intersections subjected to external loading
TL;DR: In this article, the effects of changing geometric and angular parameters on the stress ratios in shell intersection under external loadings on the branch shell were investigated. But the results were limited to the case of cylindrical shells.
Journal ArticleDOI
Stress concentration in cone–cylinder intersection
TL;DR: In this paper, a parametric study of non-radial models of the cone-cylinder shell intersection subjected to internal pressure loading was performed and the intersections of thin and middle thickness shells were analyzed.
References
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Journal ArticleDOI
Experimental Stress Analysis of Four Fabricated Equal Diameter Branch Pipe Intersections Subjected to Moment Loadings and the Implications on Branch Junction Design
TL;DR: In this paper, the results of detailed experimental stress analyses are presented and discussed in the light of current American and British piping design codes, in order to evaluate the performance of four 250 mm (10 inch) equal diameter branch junctions of different thickness.
Stresses in reinforced nozzle-cylinder attachments under external moment loadings analyzed by the finite-element method: a parameter study
TL;DR: In this paper, a parameter study was conducted on stresses in reinforced nozzle-to-cylinder attachments under external moment loadings as analyzed by the finite-element method, and both of the reinforcement designs investigated significantly reduce maximum stresses relative to configurations having little or no reinforcement.
Journal ArticleDOI
Recent Developments in B.S. 806: Ferrous Pipes for and in Connection with Boilers
P. L. Popplewell,J. Hammill +1 more
TL;DR: In this article, the authors deal in general terms with certain aspects of B.S. 806 such as design pressure, design temperature and design stresses, and those areas where the requirements of this standard differ from others are highlighted.
Plastic instability analyses and prediction of creep buckling behavior of tee under in-plane and out-of-plane moment loadings
TL;DR: In this article, a modified reference stress method was used to predict the creep behavior of a 22/SUP B/ 22 /SUP B / 22 / SUP B/ B/ tee under in-plane and out-of-plane moment loadings, in order to show applicability of primary stress index for tees at elevated temperature.