The crush of multilayer pipes is an important problem in mechanics. Many types of devices may be used to apply radial forces to keep a pipe fixed when it is loaded in the axial direction. To address this problem, one could use analytical or numerical approaches, dealing with the local bending of each cross section of the pipe. For taking into account the material and geometric nonlinearities, a finite element model can be also used. This work applies a numerical 2D model to address the crush problem caused by shoes applying radial loads in three-layered pipes. The inner and the outer layers are metallic, and the intermediate one polymeric. All the materials are considered to be nonlinear, being the metallic materials elastic-plastic. The polymeric material is assumed to have a nonlinear behavior. The main objective of the work is to study the pipe integrity and discuss the kinematics of the pipe layers when crushed. Two distinct conditions are considered: (i) slippage and gaps formations are allowed between the layers or (ii) the three layers are ideally adhered to each other. The effect of parametric variations of friction between layers is analyzed. This kinematics discussion is addressed by increasing the number of crushing loads applied to the pipe, from two to sixteen loads, from which a limit is inferred. The results and conclusions may be employed as a basis for improving simpler analytical models to face the same problem.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5532-4
PROCEEDINGS PAPER
Crush Behavior of Multilayered Pipes: Study of Pipe Integrity and Kinematic Assumptions
Alfredo Gay Neto,
Alfredo Gay Neto
University of São Paulo, São Paulo, SP, Brazil
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Guilherme Rosa Franzini,
Guilherme Rosa Franzini
University of São Paulo, São Paulo, SP, Brazil
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Clóvis de Arruda Martins,
Clóvis de Arruda Martins
University of São Paulo, São Paulo, SP, Brazil
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Celso Pupo Pesce,
Celso Pupo Pesce
University of São Paulo, São Paulo, SP, Brazil
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Eduardo Ribeiro Malta
Eduardo Ribeiro Malta
University of São Paulo, São Paulo, SP, Brazil
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Alfredo Gay Neto
University of São Paulo, São Paulo, SP, Brazil
Guilherme Rosa Franzini
University of São Paulo, São Paulo, SP, Brazil
Clóvis de Arruda Martins
University of São Paulo, São Paulo, SP, Brazil
Celso Pupo Pesce
University of São Paulo, São Paulo, SP, Brazil
Eduardo Ribeiro Malta
University of São Paulo, São Paulo, SP, Brazil
Paper No:
OMAE2013-10263, V02AT02A022; 10 pages
Published Online:
November 26, 2013
Citation
Gay Neto, A, Franzini, GR, Martins, CDA, Pesce, CP, & Malta, ER. "Crush Behavior of Multilayered Pipes: Study of Pipe Integrity and Kinematic Assumptions." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 2A: Structures, Safety and Reliability. Nantes, France. June 9–14, 2013. V02AT02A022. ASME. https://doi.org/10.1115/OMAE2013-10263
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