Mechano-electrochemical modelling of corroded steel structures
Mechano-electrochemical modelling of corroded steel structures
A numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage.
1-14
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
1 December 2016
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Wang, Yikun, Wharton, Julian and Shenoi, Ajit
(2016)
Mechano-electrochemical modelling of corroded steel structures.
Engineering Structures, 128, .
(doi:10.1016/j.engstruct.2016.09.015).
Abstract
A numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage.
Text
ENGSTRUCT-D-16-00354R1_accepted.pdf
- Accepted Manuscript
More information
Submitted date: 25 February 2016
Accepted/In Press date: 12 September 2016
e-pub ahead of print date: 22 September 2016
Published date: 1 December 2016
Organisations:
Fluid Structure Interactions Group
Identifiers
Local EPrints ID: 400769
URI: http://eprints.soton.ac.uk/id/eprint/400769
ISSN: 0141-0296
PURE UUID: a24ee680-38a2-459c-ab9e-ce54d015c7bb
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Date deposited: 27 Sep 2016 09:10
Last modified: 15 Mar 2024 05:55
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Author:
Yikun Wang
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