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http://dx.doi.org/10.3744/SNAK.2016.53.4.258

A Comparison Study of Structure Behavior of Flexible Riser Using Numerical and Theoretical Methods  

Yim, Ki-Ho (Interdisciplinary Program in Offshore Plant Engineering, Seoul National University)
Jang, Beom-Seon (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Yoo, Dong-Hyun (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.53, no.4, 2016 , pp. 258-265 More about this Journal
Abstract
A flexible riser consists of several layers which have different materials, shapes and functions. The layers designed properly can take the design load safely, and each property of layer provides a complexity of flexible riser. Such complexity/unit-property is an input for global analysis of flexible riser. There are several approaches to calculate the complexity of flexible riser, those are experimental, numerical and theoretical methods. This paper provides a complexity from numerical and theoretical analysis for 2.5 inch flexible riser of which details and the experimental data are already produced under tension, external pressure, and bending moment. In addition, comparison of stiffness and stress are also provided. Especially, analysis of stress could lead to researches on ultimate strength or fatigue strength of flexible risers.
Keywords
Flexible riser; Numerical method; Theoretical method; Axial stiffness; Stress; Bending stiffness; Hysteresis curve;
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