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Title: Determination of flexibility factors in curved pipes with end restraints using a semi-analytic formulation
Author: Fonseca, E.M.M.
Melo, F.J.M.Q. de
Oliveira, C.A.M de
Keywords: Curved pipe
Pure bending
Previous term
Flexibility factornext term
Semi-analytic formulation
Fourier series
Issue Date: 2002
Publisher: Elsevier
Citation: Fonseca, E.M.M.; Melo, F.J.M.Q. de; Oliveira, C.A.M de (2002) - Determination of flexibility factors in curved pipes with end restraints using a semi-analytic formulation. International Journal of Pressure Vessels and Piping. ISSN 0308-0161. 79:12 p. 829-840
Abstract: Piping systems are structural sets used in the chemical industry, conventional or nuclear power plants and fluid transport in general-purpose process equipment. They include curved elements built as parts of toroidal thin-walled structures. The mechanical behaviour of such structural assemblies is of leading importance for satisfactory performance and safety standards of the installations. This paper presents a semi-analytic formulation based on Fourier trigonometric series for solving the pure bending problem in curved pipes. A pipe element is considered as a part of a toroidal shell. A displacement formulation pipe element was developed with Fourier series. The solution of this problem is solved from a system of differential equations using mathematical software. To build-up the solution, a simple but efficient deformation model, from a semi-membrane behaviour, was followed here, given the geometry and thin shell assumption. The previous termflexibility factorsnext term are compared with the ASME code for some elbow dimensions adopted from ISO 1127. The stress field distribution was also calculated.
ISSN: 0308-0161
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Appears in Collections:DMA - Artigos em Revistas Indexados ao ISI/Scopus

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