Original scientific paper
https://doi.org/10.21278/brod73207
AN APPLICATION OF SOFT COMPUTING TECHNIQUES TO PREDICT DYNAMIC BEHAVIOUR OF MOORING SYSTEMS
Ayhan Mentes
; Istanbul Technical University, Faculty of Naval Architecture and Ocean Engineering, Department of Shipbuilding & Ocean Engineering, 34469 Maslak, Istanbul, Turkey
Murat Yetkin
; INHA University, Department of Naval Architecture & OceanEngineering, Incheon, Republic of Korea
Abstract
A spread mooring system (SMS) allows a ship or a floating platform to moor the seafloor using multiple mooring lines at a restricted region with a fixed heading in harsh weather. These systems can be used for the operations of ships of different tonnage at different sea depths. The optimal design of these systems is a challenging engineering problem because of the effects of many design parameters and changing environmental conditions. Modern soft computing techniques allow difficult engineering problems to be solved easily and precisely and are becoming more and more popular. In this paper, Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) as soft computation techniques have been chosen to estimate the hawser tensions and displacements of a spread mooring system. The attained results show both techniques can give consistent indicators for the modelling of dynamic systems. Although these techniques performed very well, the ANFIS model is relatively superior to the ANN technique, considering the accuracy of hawser tensions and displacements in terms of the relative errors and coefficient of correlation obtained for the ANN and ANFIS.
Keywords
Spread Mooring System; Soft Computing; Artificial Neural Network; Adaptive Neuro-Fuzzy Inference System; OrcaFlex
Hrčak ID:
278889
URI
Publication date:
1.4.2022.
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