- Title
- Aspects of numerical simulation of torpedo anchor installation
- Creator
- Nazem, Majidreza; Carter, John P.; Sloan, Scott W.
- Relation
- 25th International Ocean and Polar Engineering Conference (ISOPE 2015). Proceedings of the Twenty-fifth (2015) International Ocean and Polar Engineering Conference (Kailua-Kona, HI 21-27 June, 2015) p. 1032-1036
- Publisher
- International Society of Offshore and Polar Engineers (ISOPE)
- Resource Type
- conference paper
- Date
- 2015
- Description
- The dynamic penetration of anchors into the seabed is an important problem in offshore geomechanics and one of the most challenging for geotechnical analysts. Complications due to the nonlinear material response of the soil, the large deformations caused by the insertion of the object, and the changing boundary conditions at the contact between the soil and the anchors must be taken into account. Moreover, the presence of a pore fluid, and the pressure that it may exert, requires a fully coupled displacement-pore pressure analysis. Recent work has facilitated the modelling of the dynamic penetration of objects into soil. The finite element method is one of the most commonly used techniques for tackling problems of soil penetration because the resulting solutions satisfy the equation of dynamic equilibrium and the method can incorporate sophisticated soil models as well as complex boundary conditions. This study discusses a number of challenging aspects of the numerical simulation of dynamically embedded anchors, particularly torpedo anchors, and presents a robust analysis strategy for such problems. This technique is based on the Arbitrary Lagrangian-Eulerian method and rigorously incorporates displacements, velocities, and accelerations of the solid phase along with the pore pressure and velocities of the fluid phase.
- Subject
- anchors; seabed; deformations; displacement; finite element method
- Identifier
- http://hdl.handle.net/1959.13/1330682
- Identifier
- uon:26447
- Identifier
- ISBN:9781880653890
- Language
- eng
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