Estimation of Buckling and Plastic Behaviour according to the Analysis Model of the Stiffened Plate

Ko, Jae-Yong; Oh, Young-Cheol; Park, Joo-Shin

doi:10.5394/kinpr.2007.31.3.271

Cited by 4 publications

(3 citation statements)

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“…T [1,2,3] indicate translation constraints and on R [1,2,3] indicate rotational constraints about the 1, 2 and 3 coordinates as shown in Fig.1. Boundary conditions are imposed on the edges and lines indicated in Fig.1.…”

Section: Finite Element Model (Fem)mentioning

confidence: 99%

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Estimation of Buckling Response of the Deck Panel in Axial Compression

Özgüç

2018

Polish Maritime Research

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In this work, buckling strength assessment of a deck of a double hull oil tanker is carried out using the non-linear finite element code ADVANCE ABAQUS. The comparisons are performed with the Det Norske Veritas (DNV-GL) PULS (Panel Ultimate Limit State) buckling code for the stiffened panels, DNV-GL Classification Notes (CN) No.30.1 and the DNV-GL Ship Rules. The case studied corresponds to axial compression. Two levels of imperfection tolerances are analyzed, in accordance with the specifications in the DNV-GL Instruction to Surveyors (IS) and the DNV-GL Classification Notes No. 30.1. Both "as built" and DNV-GL Rule "net" dimensions are analyzed. The strength values from ADVANCE ABAQUS and PULS are very close. DNV-GL CN 30.1 is in conservative side, but the strength differences between the "as built" and "net" dimension cases are consistent with the finite element analysis results. This paper gives a brief description of the background for the stiffened panel models used in PULS, and comparison against non-linear FE analysis, and DNV-GL Classification Society Rules. The finite element code ADVANCE ABAQUS is employed in a non-linear buckling analysis of a stiffened deck panel on a double skin tanker that is subjected to a Condition Assessment Program (CAP) hull survey. The aim of the analyses has been to validate and compare the buckling capacity estimates obtained from PULS, and the DNV-GL Ship Rules.

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Section: Finite Element Model (Fem)mentioning

confidence: 99%

“…Ko et al [1] performed a series of FEM elastoplastic large deflection analyses on a stiffened plate with flat-bar, angle-bar and tee-bar stiffeners to examine numerically characteristics of buckling and ultimate strength behavior according to the analysis method of ship's stiffened plate subject to axial loading.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Buckling Response of the Deck Panel in Axial Compression

Özgüç

2018

Polish Maritime Research

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“…Park et al [3] analyzed the difference in buckling and ultimate strength behavior according to the numerical modeling method of hull reinforcement plates. The specifications used for modeling idealized the double bottom structure of a capesize-class bulk carrier.…”

Section: Introductionmentioning

confidence: 99%

Root Causes of Thin-Plate Buckling Damage at the Aft-End in Crude Oil Tanker and Verification through Buckling Analysis

Park,

2024

Metals

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For large ships and offshore vessels, structural safety is verified through whole-ship analysis using commercial software. In the case of general oil tankers, classification rules for structural strength evaluation are uniformly applied. Structural strength evaluation is mainly divided into the cargo hold, fore-end, and aft-end parts. For the structural design of a cargo ship, it is important to calculate the design load and determine the thickness and size of the structural member. Structural FEA (Finite Element Analysis) is performed on only the cargo hold range as recommended by the CSR (Common Structure Rule). There is no FE analysis recommendation for either the aft- or the fore-end area. Therefore, structural safety is carried out based on existing design experience and engineer judgment. With previous approaches, it is difficult to clarify the safety of the aft-end part according to external loads such as hull girder load and local pressure. Recently, local buckling damage cases have investigated the aft-end of the shuttle tanker. Although this is a good example, it can be recognized that it is necessary to improve the accuracy of prediction when estimating the structural safety at the aft-end part. In this study, a novel FE-based evaluation methodology about buckling damage is proposed. In order to conduct a structural strength verification based on FE analysis modeling, reasonable solutions for load conditions, boundary conditions, modeling methods, and evaluation criteria are presented. This result is expected to be helpful in examining the structural strength of the aft-end part of similar carriers in the future.

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