Parametric finite element analysis of naturally corroded steel specimens using 3D surface laser scans

Corrosion is considered a uniform thickness reduction design guideline of the maritime industry. However, additionally, the corroded and irregular morphology of the surface affects the steel's load-bearing capacity and its impact on the strength and elongation behaviour of the steel is not yet fully understood. These effects on the local behaviour of steel structures under tensile loading were investigated with tensile tests on naturally corroded steel specimens and nonlinear finite element simulations including the corroded surface morphology with a uniform surface idealation. The models also include the deformed specimen shape. The developed approach led to highly accurate parametric finite element models predicting the ultimate tensile strength and longitudinal position of fracture. The results show that all included aspects are essential for accurate simulations, while solely the maximum available surface resolution was not as decisive.

Subjects

Corrosion | finite element analysis | integrity of steel structures | numerical simulation | strength analysis

DDC Class

623: Military Engineering and Marine Engineering

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publishedVersion

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https://creativecommons.org/licenses/by/4.0/

Name

Parametric finite element analysis of naturally corroded steel specimens using 3D surface laser scans.pdf

Type

Main Article

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2.88 MB

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Adobe PDF

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Parametric finite element analysis of naturally corroded steel specimens using 3D surface laser scans