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Research output: Contribution to conference - Without ISBN/ISSN › Conference paper › peer-review
Research output: Contribution to conference - Without ISBN/ISSN › Conference paper › peer-review
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TY - CONF
T1 - Local and Global Design of Composite Risers on Truss SPAR Platform in Deep waters
AU - Amaechi, Chiemela Victor
AU - Ye, Jianqiao
AU - Hou, Xiaonan
AU - Gillett, Nathaniel
AU - Odijie, Agbomerie Charles
AU - Wang, Facheng
N1 - Conference code: 5th
PY - 2019/7/3
Y1 - 2019/7/3
N2 - The application of risers in offshore deep waters have been necessitated due to the increase in the water depths. Thus, the number of marine riser segments increase, which also increase the weight of the offshore platform. To reduce the weight of the risers, composite risers are proposed. The material property of composites can be harnessed to develop composite marine risers, which will reduce the weight on the offshore platform. Numerical tools are employed and the system is coupled using ANSYS 19.2 System Coupling tool, ANSYS ACP and ANSYS AQWA. The local design of the composite risers involved 18 layers and an inner liner. Composite materials used include AS4/PEEK, AS4/Epoxy and different configurations were investigated. Other liner materials on the composite risers were also looked at in the study. Hydrodynamic investigations were also carried out using environmental conditions. Results of the local analysis of the riser were applied in the global design on a Truss SPAR Platform in a deep water condition of 2000m water depth. Comparative studies of the composite risers and the steel risers were carried out. From the results of the study, the composite risers local and global designs applied in deep water conditions were satisfactory. Recommendations too were given in line with the industry standards.
AB - The application of risers in offshore deep waters have been necessitated due to the increase in the water depths. Thus, the number of marine riser segments increase, which also increase the weight of the offshore platform. To reduce the weight of the risers, composite risers are proposed. The material property of composites can be harnessed to develop composite marine risers, which will reduce the weight on the offshore platform. Numerical tools are employed and the system is coupled using ANSYS 19.2 System Coupling tool, ANSYS ACP and ANSYS AQWA. The local design of the composite risers involved 18 layers and an inner liner. Composite materials used include AS4/PEEK, AS4/Epoxy and different configurations were investigated. Other liner materials on the composite risers were also looked at in the study. Hydrodynamic investigations were also carried out using environmental conditions. Results of the local analysis of the riser were applied in the global design on a Truss SPAR Platform in a deep water condition of 2000m water depth. Comparative studies of the composite risers and the steel risers were carried out. From the results of the study, the composite risers local and global designs applied in deep water conditions were satisfactory. Recommendations too were given in line with the industry standards.
KW - composite risers
KW - Truss SPAR
KW - SPAR platform
KW - SPAR
KW - offshore structures
KW - local design
KW - global design
KW - deep waters
M3 - Conference paper
T2 - MECHCOMP2019 5th International Conference on Mechanics of Composites
Y2 - 1 July 2019 through 4 July 2019
ER -