| Summary: | 碩士 === 國立高雄海洋科技大學 === 造船及海洋工程研究所 === 102 === Subsea pipeline connects the two lands to transport liquids, gases, etc.; in generally, the pipeline is laid on the seabed and the water pressure would cause corrosion, whether or not corrosion of the pipeline is safe, it is necessary for professional judgment.
In this paper, we first consider the strength types that pipelines may be damaged. We use an ANSYS modeling to simulate corrosion defects in a single case by a different width or depth and understand the stress effects. To generate random numbers by MATLAB, a 3D curve surface with the random numbers is created and exported to IGES files by AUTOCAD VBA program. Next, it is modeling by CATIA and stress analysis by ANSYS. There are single rectangular, spherical defects, two defects each other affect to investigate stress analysis.
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