Hydraulic hoses are components of subsea umbilicals that are responsible for Xmas tree gate valves actuation. These hoses are susceptible to collapse by external pressure and, since they are fabricated of rigid polymers, this failure can lead to strain concentration at specific points across the circumference, leading to rupture due to high internal pressure. The objective of this work is to study an alternative material to be employed in the manufacture of the hydraulic hose liner that can support the internal pressure (associated to the aramid layer) after an eventual collapse, and that have no chemical interaction with the hydraulic fluid used. This study is based on the comparison between the material currently used (Polyamide 11) and a fluorinated elastomer, Viton®. To compare the mechanical behavior of both materials, uniaxial tensile tests as well as nonlinear finite elements models were performed. The results obtained by finite element analysis showed that both, Polyamide 11 and Viton®, did not fail under external pressure. However, Polyamide 11 concentrates high plastic deformations after collapse that can lead to located hose rupture under internal pressure. For Viton®, it was found that the material concentrates deformations during collapse but these deformations are recovered when internal pressure is applied. Considering that the external aramid layer is responsible to withstand the internal pressure in both cases, Viton® can successfully replace Polyamide 11 for this application.
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ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
May 31–June 5, 2015
St. John’s, Newfoundland, Canada
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5650-5
PROCEEDINGS PAPER
Study of an Alternative Material for the Manufacture of Subsea Umbilical Hydraulic Hoses Available to Purchase
Ilson Pasqualino,
Ilson Pasqualino
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Marysilvia da Costa,
Marysilvia da Costa
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Geovana Drumond
Geovana Drumond
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Ilson Pasqualino
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Marysilvia da Costa
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Geovana Drumond
Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2015-41050, V004T03A022; 14 pages
Published Online:
October 21, 2015
Citation
Pasqualino, I, da Costa, M, & Drumond, G. "Study of an Alternative Material for the Manufacture of Subsea Umbilical Hydraulic Hoses." Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Materials Technology. St. John’s, Newfoundland, Canada. May 31–June 5, 2015. V004T03A022. ASME. https://doi.org/10.1115/OMAE2015-41050
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