Affiliation:
1. Harbin Engineering University
2. Daqing Oilfield Limited Company
3. Turbine Technology Research Center, Research Institute, Harbin Turbine Company Limited
Abstract
Flexible pipes, which can be divided into bonded and unbonded types, have been used for years in the oil industry. An unbonded structure presents a large interest in offshore production as they allow to realize simple liaison between the seafloor and the surface. In the present paper, an unbonded flexible pipe under axial force has been analyzed by finite element (FE) method in which eight layers of the unbonded flexible pipe have established. Solid and shell elements are used to simulate the layers. In the FE model, all layers are modeled separately with contact and friction interfaces between each layer. The numerical results are compared to the literature’s results, which shows very good agreement with numerical and other existing results, have validated the use of the given model. It might provide practical and technical support for the application of flexible steel pipes.
Publisher
Trans Tech Publications, Ltd.
Reference14 articles.
1. T. Kagoura, K. Ishii, S. Abe , T. Inoue , T. Hayashi , T. Sakamoto , T. Mochizuki, T. Yamada. Development of a flexible pipe for pipe-in-pipe technology [J]. Furukawa Review. 2003, 24: 69-75.
2. J. J. Feret, C. L. Bournazei. Calculation of stresses and slip in structural layers of unbonded flexible pipes [J]. Journal of Offshore Mechanics and Arctic Engineering, 1987, 109: 263-269.
3. P. Claydon, G. Cook, P.A. Brown, R. Chandwani. A theoretical approach to prediction of service life of unbonded flexible pipes under dynamic loading conditions [J]. Marine Structures, 1992, 5(5): 399-5429.
4. A. M. Harte, J. F. McNamara. Modelling procedures for the stress analysis of flexible pipe cross sections [J]. Transactions of the ASME, 1993, 115: 46-51.
5. I. Kraincanic, E. Kebadze. Slip initiation and progression in helical armouring layers of unbonded flexible pipes and its effect on pipe bending Behaviour [J]. Journal of Strain Analysis, 2001, 36(3): 265-275.