This paper presents the results of an investigation into the post-buckling behavior and ultimate strength of imperfect corroded steel plates used in ship and other marine-related structures. A series of elastic-plastic large deflection finite element analyses is performed on both-sides randomly corroded steel plates. The effects of general corrosion are introduced into the finite element models using a random thickness surface model considering Gaussian distribution with different standard deviation. The effects on plate compressive strength as a result of parametric variation of the corroded surface geometry are evaluated. A proposal on the effective thickness is concluded in order to estimate the ultimate strength and explore the post-buckling behavior of randomly corroded steel plates under uniaxial compression.

Subject
Steel structures, Steel surfaces, Materials, Finite element analysis, Buckling, Stress, Deflection, Corrosion modeling, Steel, Marine vessels, Risk reduction, Elements, Types of corrosion
Keywords:
Buckling, Random Corrosion, Ultimate Strength, Stiffened Plate, FE Modeling
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2011
Association for Materials Protection and Performance (AMPP)
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