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TECHNICAL PAPERS

Structural Behavior of Dented Tubular Members Under Lateral Loads

[+] Author and Article Information
Claudio Ruggieri

Department of Naval Architecture and Ocean Engineering, University of São Paulo, São Paulo, SP 05508-900, Brazile-mail: claudio.ruggieri@poli.usp.br

José Alfredo Ferrari

Petróleo Brasileiro S. A.-Petrobrás-Exploitation and Production (E&P) Division, Rio de Janeiro, RJ 20035-900, Brazile-mail: jferrari@petrobras.com.br

J. Offshore Mech. Arct. Eng 126(2), 191-197 (May 18, 2004) (7 pages) doi:10.1115/1.1712979 History: Received December 20, 2002; Revised November 20, 2003; Online May 18, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic illustration of potential collision between two adjacent risers
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Deformation of simply supported beam subjected to indentation 8. (a) Schematic trajectory of lateral load normalized by the plastic limit load vs. dent depth; (b) pure denting; (c) denting and bending; (d) collapse.
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Schematic illustration of test rig for testing the pipe specimens with a rigid cylindrical indenter having the same diameter as the tube: (a) simply supported pipes; (b) axially loaded pipes
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Tensile stress-strain response at room temperature for the API N80 steel employed in the experiments
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Measured load-dent depth response for the simply supported pipes
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Measured load-dent depth response for the axially loaded pipes
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Quarter symmetric, 3D finite element model for the simply supported tested pipe with S=1000 mm
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Comparison between experimentally measured load-dent depth and numerical predictions for the simply supported pipes
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Comparison between experimentally measured load-dent depth and numerical predictions for the axially loaded pipes
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Comparison between the Ellinas and Walker formulation and the experimental results for the simply supported pipes
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Load vs. dent depth response for a 9 5/8 riser with varying load spans S=1000, 2000, 3000 and 6000 mm
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Load vs. dent depth response for a 9 5/8 riser with S=3000 mm and varying applied axial tension (top tension)

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