Stress analysis of freestanding risers subjected to waves and current loadings - Numerical modelling

Free Standing Risers are vertical steel pipes tensioned by a near surface buoyancy can. These risers are subjected to different types of loads that lead to fatigue damages. Therefore, this study aims to predict the stresses of freestanding risers subjected to hydrodynamic loads. The methods applied...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-03, Vol.1101 (1), p.12003
Main Authors: Al-Yacouby, A M, Arifin, Hakim, Liew, M S, Razak, Zahari
Format: Article
Language:English
Subjects:
Computer simulation
Diameters
Fatigue failure
Loads (forces)
Numerical analysis
Numerical methods
Risers
Steel pipes
Stress analysis
Tensile strength
Wall thickness
Water currents
Wave height
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Summary:Free Standing Risers are vertical steel pipes tensioned by a near surface buoyancy can. These risers are subjected to different types of loads that lead to fatigue damages. Therefore, this study aims to predict the stresses of freestanding risers subjected to hydrodynamic loads. The methods applied consists of numerical analysis and computer simulation. In this paper, the wave and current loads acting on the risers have been determined using Morison equation, then the stress analysis was conducted using ANSYS software. The important parameters investigated are the pipe diameter D, the wall thickness, t, the wave height, H max , the wave period, T ass , the tensile strength, fy and the water current, v. The outcome of the study shows that wave height, wave period, pipe diameter and the wall thickness are affecting the maximum stress on the risers.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1101/1/012003