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Method for Real-Time Hybrid Model Testing of ocean structures: Case study on horizontal mooring systems

Abstract

This paper presents a method for Real-Time Hybrid Model testing (ReaTHM testing) of ocean structures. ReaTHM testing is an extension to traditional hydrodynamic model-scale testing, where the system under study is partitioned into physical and numerical substructures. The physical and numerical subsystems are connected in real-time through a control system. Based on experience with various ReaTHM tests, a general method for ReaTHM testing of ocean structures has been proposed. An experimental case study was carried out to illustrate the proposed method. The study was conducted in a state-of-the-art hydrodynamic laboratory, where a physical cylindrical buoy was placed in a still-water basin. Horizontal mooring loads from a numerical mooring system, which were modelled using the nonlinear finite element software RIFLEX were actuated onto the physical substructure. System performance was verified through comparison with a physical horizontal mooring system consisting of physical springs.
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Category

Academic article

Language

English

Author(s)

  • Stefan Arenfeldt Vilsen
  • Thomas Sauder
  • Asgeir Johan Sørensen
  • Martin Føre

Affiliation

  • SINTEF Ocean / Aquaculture
  • SINTEF Ocean / Skip og havkonstruksjoner
  • Norwegian University of Science and Technology

Date

15.01.2019

Year

2019

Published in

Ocean Engineering

ISSN

0029-8018

Volume

172

Page(s)

46 - 58

View this publication at Norwegian Research Information Repository