Ultimate strength of stiffened plates with pitting corrosion

Ahmad, Rohanin; Niamir, Nabi; Zarookian, A.

doi:10.1515/ijnaoe-2015-0037

Cited by 32 publications

(5 citation statements)

References 9 publications

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“…The grooving corrosion is assumed to appear in the attached plating and the bottom of the stiffener web. The corroded stiffened plates with irregular surfaces with different corrosion patterns, amount of corrosion loss, and roughness of surface were employed to assess the elastic buckling strength (Rahbar-Ranji 2015) while pitting corrosion was used to evaluate the ultimate strength of stiffened plate (Jing et al 2017;Rahbar-Ranji et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Hull Girder Ultimate Strength Assessment Considering Local Corrosion

Van

Dong

2020

J. Marine. Sci. Appl.

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The residual strength capacity of ship hull with full corrosion appearance in every structural member has been considered in a large number of research works; however, the influence of local corrosion on the ultimate strength and cross-section properties has not been taken into account and analyzed. Hence, this study aims to assess the effect of corrosion appearance in the flange section and web section on the ultimate vertical bending moment and several cross-section properties of a bulk carrier. To perform this task, a probabilistic corrosion rate estimation model and the common structural rule model are introduced and employed. The incremental-iterative method given by the International Association of Classification Societies-Common Structural Rules (IACS-CSR) is applied to determine the ultimate vertical bending moment, neutral axis position at the limit state, and other properties of the cross-section. The calculation results and discussions relative to the effect of corrosion on ship hull are presented.

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Section: Introductionmentioning

confidence: 99%

Hull Girder Ultimate Strength Assessment Considering Local Corrosion

Van

Dong

2020

J. Marine. Sci. Appl.

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“…As for a common method, instead of modeling a single pit body, a group of pits body damage adjacent to each other is modeled by applying rectangles or circles (Chen et al , 2018; Fu et al , 2018; Saad-Eldeen et al , 2013; Nakai et al , 2006). Generally, the DOP damage is defined as the ratio of the corrosion area to the entire area (Rahbar-Ranji et al , 2015): where A pi is the area of each pit, n is the pits number and a and b are the length and width dimensions of the plate, respectively.…”

Section: Details On the Finite Element Modelmentioning

confidence: 99%

Finite element analysis of pitting corrosion on mechanical behavior of E690 steel panel

Liu

2022

ACMM

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Purpose The purpose of this study is to analysis the pitting corrosion on the mechanical behavior of E690 high-strength steel sandwich panel. The pitting corrosion depth and degree of pitting (DOP) damage were used to evaluate the mechanical behaviors such as peak load and specific energy absorption of E690 panel. Design/methodology/approach The mechanical behavior of quasi-static compression, low-speed impact and three-point bending of E690 panel after pitting corrosion was simulated by ABAQUS nonlinear finite element method. Findings The quasi-static compression and low-speed impact mechanical properties can be greatly reduced by the pitting corrosion of the panel core, the pitting corrosion of the outer panel shows no obvious effect. The mechanical properties decrease with the increase of the pitting corrosion depth and DOP, and the influence of DOP is greater than that of pitting corrosion depth. The DOP of outer panel has less effect on mechanical properties of three-point bending compared with that of the core. Therefore, the pitting corrosion in the core of panel should be strictly controlled to prevent adverse effects on the mechanical properties of the structure. Originality/value To make up for the deficiency of the research on the corrosion behavior of high-strength steel sandwich panel structure, this paper chose E690 high-strength steel panel as the research object, and nonlinear finite element method was adopted to simulate the influence of pitting corrosion coverage area and pitting depth on its mechanical property degradation. The quasi-static compression, low-speed impact and three-point bending mechanical properties of panel with various DOPs and pitting depths were systematic studied.

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“…In the past decades, there have been a lot of studies related to the durability of the panels have cutouts made by scientists [4,18]. However, in order to accurately assess the effects of the cutouts to the structure, there are still a lot of challenges that have not been satisfactorily resolved.…”

Section: Introductionmentioning

confidence: 99%

A Novel Evaluate the Ultimate Strength of Plate Having Cutout Under In-Plane Compression

Hinh,

Phong,

Hai

2024

IJMEA

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In this study, investigating the effect of different sizes, cut out shapes and different shapes of the structural to the ultimate strength of steel panels. The nonlinear finite element method is applied in this study. A series of simulations have been performed for the unstiffened panels have the cutouts with different shapes and sizes. Effect of size and cutout shapes to the ultimate strength of steel plates and different shapes of the structural. The relationship between stress and strain is investigated and analyzed. A relationship showed that the effects of different shapes of structural to ultimate strength is presented. The aim of this study is to evaluate the stress and ultimate strength of perforated structures with holes under the compression edge load. Which is the main action type arising from cargo weight and water pressure affecting the ships structure and offshore structures. The cutout is circular and elongated circular in the located in the center of the plate. A series of Abaqus nonlinear finite element analyses performed with cutout size is investigated. By regression analysis of the FEA results is obtained, it helps marine designers to give the optimum structure for simultaneous durability to ensure the maximum saving of raw materials.

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Ultimate strength of stiffened plates with pitting corrosion

Cited by 32 publications

References 9 publications

Hull Girder Ultimate Strength Assessment Considering Local Corrosion

Hull Girder Ultimate Strength Assessment Considering Local Corrosion

Finite element analysis of pitting corrosion on mechanical behavior of E690 steel panel

A Novel Evaluate the Ultimate Strength of Plate Having Cutout Under In-Plane Compression

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