Ultimate strength assessment of rectangular steel plates subjected to a random localised corrosion degradation

• Autor: Silva, J.E. ; Garbatov, Y. ; Guedes Soares, C.
• Assuntos: Aged steel plates ; Applied sciences ; Buckling ; Building structure ; Buildings. Public works ; Computation methods. Tables. Charts ; Computer simulation ; Construction (buildings and works) ; Corrosion ; Degradation ; Durability. Pathology. Repairing. Maintenance ; Exact sciences and technology ; Hydraulic constructions ; Mathematical analysis ; Metal structure ; Monte Carlo simulation ; Offshore structure (platforms, tanks, etc.) ; Pitting ; Plates ; Regression analysis ; Structural analysis. Stresses ; Structural steels ; Ultimate strength ; Ultimate tensile strength
• É parte de: Engineering structures, 2013-07, Vol.52, p.295-305
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• Descrição: ► The effects of a random corrosion thickness on the ultimate strength of steel plates is studied. ► Two new and distinct corrosion surface models are proposed and investigated. ► 3575 Corroded plate surface are generated by simulation for different degrees of degradation. ► Non-linear finite element analyses of ultimate strength are carried out. ► A regression formulae is derived to predict strength reduction due to corrosion. The objective of the present study is to investigate the effects of a random corrosion thickness distribution on the ultimate strength of unstiffened rectangular steel plates subjected to uniaxial compressive load. Two new and distinct corrosion surface models are proposed and investigated. A total of 3575 corroded plate surface geometries are generated by Monte Carlo simulation for different degrees of degradation, location and ages and non-linear finite element analyses are carried out, using a finite element code. Based on a regression analysis, empirical formulae to predict strength reduction due to corrosion have been derived demonstrating a good accuracy.
  
• Editor: Kidlington: Elsevier Ltd
  
• Idioma: Inglês