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Influence of localized pit distribution and bench-shaped pits on the ultimate compressive strength of steel plating for shipping

Influence of localized pit distribution and bench-shaped pits on the ultimate compressive strength of steel plating for shipping
Influence of localized pit distribution and bench-shaped pits on the ultimate compressive strength of steel plating for shipping
This work has developed numerical models simulating steel plate corrosion degradation and presents a series of novel finite element modeling to assess the influence of localized pit distribution and bench-shaped pits, which are often observed in long-term exposures. Four location patterns of one-sided corroded shipping steel plates have been considered, which include both geometric and material non-linearities. Validation of the modeling method is achieved by a thermoelastic stress analysis, which provides the principal stress distribution over the plate surface. The modeling results demonstrate that the frequently detected localized corrosion may reduce the ultimate strength by up to 20% compared to uniformly corroded plate. In addition, bench-shaped pits may further decrease the ultimate strength by up to 14% compared to the no-bench condition with the same degree of pitting.
degree of pitting, finite element modelling, pitting corrosion, thermoelastic stress analysis, ultimate strength
0010-9312
915-927
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960

Wang, Yikun, Wharton, J.A. and Shenoi, R.A. (2014) Influence of localized pit distribution and bench-shaped pits on the ultimate compressive strength of steel plating for shipping. Corrosion, 70 (9), 915-927. (doi:10.5006/1223).

Record type: Article

Abstract

This work has developed numerical models simulating steel plate corrosion degradation and presents a series of novel finite element modeling to assess the influence of localized pit distribution and bench-shaped pits, which are often observed in long-term exposures. Four location patterns of one-sided corroded shipping steel plates have been considered, which include both geometric and material non-linearities. Validation of the modeling method is achieved by a thermoelastic stress analysis, which provides the principal stress distribution over the plate surface. The modeling results demonstrate that the frequently detected localized corrosion may reduce the ultimate strength by up to 20% compared to uniformly corroded plate. In addition, bench-shaped pits may further decrease the ultimate strength by up to 14% compared to the no-bench condition with the same degree of pitting.

Text
CORROSION_Y Wang main article revision2.0 corrected - Accepted Manuscript
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More information

Accepted/In Press date: 9 April 2014
e-pub ahead of print date: 22 April 2014
Published date: September 2014
Keywords: degree of pitting, finite element modelling, pitting corrosion, thermoelastic stress analysis, ultimate strength
Organisations: nCATS Group, Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 377821
URI: http://eprints.soton.ac.uk/id/eprint/377821
ISSN: 0010-9312
PURE UUID: e4635f82-6535-40c1-9550-63da9d9eff99
ORCID for Yikun Wang: ORCID iD orcid.org/0000-0001-5619-7795
ORCID for J.A. Wharton: ORCID iD orcid.org/0000-0002-3439-017X

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Date deposited: 23 Jun 2015 13:47
Last modified: 27 Jan 2020 13:46

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