Abstract
A simplified model of the motion of a grounding iceberg for determining the gouge depth into the seabed is proposed. Specifically, taking into account uncertainties relating to the soil strength, a nonlinear stochastic differential equation governing the evolution of the gouge length/depth in time is derived. Further, a recently developed Wiener path integral (WPI) based approach for solving approximately the nonlinear stochastic differential equation is employed; thus, circumventing computationally demanding Monte Carlo based simulations and rendering the approach potentially useful for preliminary design applications. The accuracy/reliability of the approach is demonstrated via comparisons with pertinent Monte Carlo simulation (MCS) data.
Original language | English |
---|---|
Article number | 011501 |
Number of pages | 8 |
Journal | Journal of Offshore Mechanics and Arctic Engineering |
Volume | 139 |
Issue number | 1 |
Early online date | 20 Sept 2016 |
DOIs | |
Publication status | Published - 28 Feb 2017 |
Keywords
- offshore pipelines
- offshore safety
- probabilistic models
- offshore structures
- structural safety
- forces motions
- pipelines
- risk analysis
- offshore reliability