A methodology for analysis of defective pipeline by introducing stress concentration factor into beam-pipe finite element formulation

Hsu Yang Shang


This work proposes a methodology for defective pipe elastoplastic analysis using the Euler Bernoulli beam-pipe element formulation. The virtual work equation is modified to incorporate the stress concentration factor in beam-pipe element formulation. The stress concentration factor is evaluated a priori by a 2D or 3D finite element model according to the defect profile. In this work, a semicircular defect and a rectangular defect are considered. The stress concentration factor is inserted into the beam-pipe element elastoplastic formulation, and several applications are presented to show the applicability of the proposed method.



Euler-Bernoulli beam element; stress concentration factor; virtual work equation; elastoplastic analysis

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DOI: http://dx.doi.org/10.4025/actascitechnol.v38i3.27988

ISSN 1806-2563 (impresso) e ISSN 1807-8664 (on-line) e-mail: actatech@uem.br


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