- Title
- Numerical modelling of offshore pipe-seabed interaction problems
- Creator
- Sabetamal, H.; Nazem, M.; Sloan, S. W.; Carter, J. P.
- Relation
- 14th International Conference of the International Association for Computer Methods and Recent Advances in Geomechanics. Computer Methods and Recent Advances in Geomechanics (Kyoto, Japan 22-25 September, 2014) p. 655-660
- Publisher Link
- http://dx.doi.org/10.1201/b17435-113
- Publisher
- Taylor & Francis
- Resource Type
- conference paper
- Date
- 2015
- Description
- This study outlines the development of a computational scheme which accounts for large deformation dynamic behaviour of saturated porous media and models soil-structure interaction using a high-order frictional contact algorithm. The numerical scheme is employed to analyse a dynamic coupled problem of pipeline-seabed interaction in two steps, including the simulation of the dynamic embedment process as well as the subsequent consolidation stage. The analysis considers a frictional interface between the pipe and the soil which is normally ignored in most analyses due to numerical difficulties. The nonlinear behaviour of the solid constituent is captured by the Modified Cam Clay soil model, allowing the incorporation of shear-induced pore water pressures during the embedment process. The results of this study indicate that the proposed method is able to solve the highly nonlinear problem of dynamic soil-pipe interaction coupled with pore water pressures and Darcy velocity. The results also show that a dynamic approach is necessary for coupled problems of pipe-seabed interaction involving very fast loading.
- Subject
- numerical modelling; offshore pipe-seabeds; dynamic behaviour; modified soils
- Identifier
- http://hdl.handle.net/1959.13/1332251
- Identifier
- uon:26821
- Identifier
- ISBN:9781138001480
- Language
- eng
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