An Improved Version of ETS-Regression Models in Calculating the Fixed Offshore Platform Responses

An offshore structural design should accurately calculate wave loads and structural responses acting on slender cylinders. The hydrodynamic drag-dominated force was always challenging, hence the hydrodynamic wave loading became a complex solution; it led to a nonlinear relation between the wave forc...

Full description

Saved in:
Bibliographic Details
Published in:Journal of marine science and engineering 2022-11, Vol.10 (11), p.1727
Main Authors: Syed Ahmad, Sayyid Zainal Abidin, Abu Husain, Mohd Khairi, Mohd Zaki, Noor Irza, Mukhlas, Nurul ‘Azizah, Najafian, Gholamhossein
Format: Article
Language:English
Subjects:
Drag
extreme structural responses
High seas
Hydrodynamics
Inertia
Kinematics
Load
Monte Carlo simulation
Monte Carlo time simulation
Ocean waves
Offshore
Offshore platforms
offshore structure
Polynomials
Probability distribution
Regression analysis
regression model
Regression models
Sea state
Sea states
Simulation
Statistical methods
Structural design
Structural engineering
Structural response
time simulation
Wave diffraction
Wave forces
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An offshore structural design should accurately calculate wave loads and structural responses acting on slender cylinders. The hydrodynamic drag-dominated force was always challenging, hence the hydrodynamic wave loading became a complex solution; it led to a nonlinear relation between the wave force and responses caused by the diffracted and radiated waves, which was included in Morison’s equation. For more consistency in the structural assessment, the linearised drag–inertia force was considered in model development, such as an improved version of the efficient time simulation regression (ETS-Reg) procedure that was introduced. The study aimed to improve the prediction of structural responses using the predetermined linear, polynomial, and cubic regression models. These simulations were performed focusing on high sea state conditions without wave-induced current effects. In order to evaluate the level of accuracy, the recent ETS-Reg models were compared and validated using the Monte Carlo time simulation (MCTS) method. An amended ETS-Reg model, known as the ETS-RegLR model, was also compared with the previous results obtained using the conventional ETS-Reg models (ETS-RegSE), leading to better structural response calculations.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse10111727