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Vibration and Flow Analysis of Steel Jacket Structure Due To Corrosion
Effects
Nurul Syafiqah binti Abu Sapian
Supervisor: Dr. Mohd Hairil bin Mohd
Co-Supervisor: Dr Mohd Asamudin A Rahman
Bachelor of Applied Science (Maritime Technology)
School of Ocean Engineering
Universiti Malaysia Terengganu
Rig-to-Reef (RTR) program is one of the platform decommissioning methods which
required a thorough analysis of the corrosion effects in marine environment.
Therefore, in this paper the effects of different thickness of the steel jacket structure
on the structural response and flow around the structure will be studied. The steel
jacket structure will be modeled and analyzed using finite element software, ABAQUS.
Current, pressure and seawater density is considered as constant parameters.
Vibration characteristics of different diameters of steel structure, ranging between
5mm-10mm will be thoroughly studied. It was expected that, the corrosion rate
significantly affects the vibration frequency of the structure. Hence, increasing the
corrosion rate on a plate or a cylinder will decrease the frequency of vibration.
However, the reduction of the steel thickness due to corrosion will eventually decrease
the structural integrity. The result of the vibration analysis will be compared with those
available in the literature.
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