Abstract
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, Hmax, the wave period, Tass, 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.
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