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Accidental Limit States of Marine Structures
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Accidental Limit States of Marine Structures

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 18842

Special Issue Editors

Dr. Burak Can Cerik

E-Mail Website
Guest Editor
Department of Naval Architecture and Ocean Engineering, Inha University, Incheon, Korea
Interests: ship structures; structural impact; ductile fracture; structural integrity; ultimate strength
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Joonmo Choung

E-Mail Website
Guest Editor
Department of Naval Architecture and Ocean Engineering, Inha University, Incheon, Incheon, Korea
Interests: ductile fracture; plasticity; structural impact; material characterization

Special Issue Information

Dear Colleagues,

The design of ships and offshore structures for extreme actions, such as collision and grounding, explosions, abnormal waves, and ice impact, poses particular challenges in terms of the assessment of highly nonlinear structural responses, uncertainties related to material and load modelling, and the establishment of acceptance criteria which define functional requirements concerned with the structures’ resistance to accidental effects. In particular, well-established guidance for the quantitative assessment and management of accidental risks is sorely needed. This Special Issue aims at collecting contributions reflecting the latest developments in the accidental limit states of marine structures including ships, offshore installations, subsea structures, and offshore pipelines. High-quality papers are encouraged for publication that are directly related to various aspects mentioned below:

  • Computational models for nonlinear structural response analysis;
  • Constitutive models addressing dynamic inelastic behaviour of marine-use materials;
  • External dynamics and internal mechanics of collision and grounding;
  • Safety assessment of damaged structures, including stability and residual strength;
  • Assessment of consequences of accidental events, e.g., oil spill and flooding;
  • Quantitative marine accident risk assessment and management.

Submissions may address problems of theoretical and numerical modelling, physical model testing, applications, case studies, operational studies, or other scientifically based approaches. Contributions presenting novel creative approaches, properly supported by consistent scientific reasoning, are particularly welcomed.

Dr. Burak Can Cerik
Prof. Dr. Joonmo Choung
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • collision and grounding
  • dropped object
  • explosion and fire
  • abnormal ice action
  • abnormal waves
  • stability and residual strength
  • unintended flooding
  • structural impact testing
  • nonlinear FEA
  • design against accidents

Published Papers (5 papers)

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Research

18 pages, 6129 KiB  
Article
Numerical Simulations and Experimental Study on the Reeling Process of Submarine Pipeline by R-Lay Method
by Ming Ju, Xiaodong Xing, Liquan Wang, Feihong Yun, Xiangyu Wang and Hongqian Liao
J. Mar. Sci. Eng. 2021, 9(6), 579; https://doi.org/10.3390/jmse9060579 - 27 May 2021
Cited by 5 | Viewed by 3107
Abstract
During the reeling process of the reel-lay method, the pipe will be subjected to combined loading of tension and bending. Excessive ovalization of the pipe will affect the structural performance and even lead to structural instability of the pipe. In this paper, a [...] Read more.
During the reeling process of the reel-lay method, the pipe will be subjected to combined loading of tension and bending. Excessive ovalization of the pipe will affect the structural performance and even lead to structural instability of the pipe. In this paper, a numerical simulation model of the pipe-reeling process is established by finite element tools. The Ramberg–Osgood material model is used to study the ovalization and bending moment of the pipe cross-section during the pipe-reeling process based on the Von Mises plasticity and nonlinear kinematic hardening rules. The results show that the ovalization and bending moment of the pipe section will change significantly during the pipe-reeling process. Subsequently, one set of 6-inch pipe-reeling experimental setups was designed to conduct a full-scale experiment. Compared with the experimental results, the feasibility of the finite element model is verified. Finally, the effects of diameter-to-thickness ratio, the material parameters of the pipe, and the pipe axial tension on the ovalization and bending moment changes are studied. Research shows that each parameter has a certain influence on the pipe of the reeling process, and the diameter-to-thickness ratio of the pipe has the most obvious effect. When the diameter-to-thickness ratio decreases, the bearing capacity for bending moments and the ability to resist ovalization of pipe are enhanced. At the same time, each parameter has a significant impact on the reeling process of the pipeline. Full article
(This article belongs to the Special Issue Accidental Limit States of Marine Structures)
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19 pages, 9976 KiB  
Article
Numerical Validation of the Two-Way Fluid-Structure Interaction Method for Non-Linear Structural Analysis under Fire Conditions
by Donghan Woo and Jung Kwan Seo
J. Mar. Sci. Eng. 2021, 9(4), 400; https://doi.org/10.3390/jmse9040400 - 9 Apr 2021
Cited by 6 | Viewed by 2787
Abstract
Fire accidents on ships and offshore structures lead to complex non-linear material and geometric behavior, which can cause structural collapse. This not only results in significant casualties, but also environmental catastrophes such as oil spills. Thus, for the fire safety design of structures, [...] Read more.
Fire accidents on ships and offshore structures lead to complex non-linear material and geometric behavior, which can cause structural collapse. This not only results in significant casualties, but also environmental catastrophes such as oil spills. Thus, for the fire safety design of structures, precise prediction of the structural response to fire using numerical and/or experimental methods is essential. This study aimed to validate the two-way fluid-structure interaction (FSI) method for predicting the non-linear structural response of H-beams to a propane burner fire by comparison with experimental results. To determine the interaction between a fire simulation and structural analysis, the Fire-Thermomechanical Interface model was introduced. The Fire Dynamics Simulator and ANSYS Parametric Design Language were used for computational fluid dynamics and the finite element method, respectively. This study validated the two-way FSI method for precisely predicting the non-linear structural response of H-beams to a propane burner fire and proposed the proper time increment for two-way FSI analysis. Full article
(This article belongs to the Special Issue Accidental Limit States of Marine Structures)
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19 pages, 4005 KiB  
Article
Predicting the Deflection of Square Plates Subjected to Fully Confined Blast Loading
by Cheng Zheng, Yiwen Wang, Xiangshao Kong, Hu Zhou, Haibao Liu and Weiguo Wu
J. Mar. Sci. Eng. 2020, 8(12), 1031; https://doi.org/10.3390/jmse8121031 - 18 Dec 2020
Cited by 2 | Viewed by 2109
Abstract
The main objective of this study is to conveniently and rapidly develop a new dimensionless number to characterize and predict the deflection of square plates subjected to fully confined blast loading. Firstly, based on the Kirchhoff–Love theory and dimension analysis, a set of [...] Read more.
The main objective of this study is to conveniently and rapidly develop a new dimensionless number to characterize and predict the deflection of square plates subjected to fully confined blast loading. Firstly, based on the Kirchhoff–Love theory and dimension analysis, a set of dimensionless parameters was obtained from the governing equation representing the response of a thin plate subjected to impact load. A new dimensionless number with a definite physical meaning was then proposed based on dimensional analysis, in which the influence of bending, torsion moment and membrane forces on the dynamic response of the blast-loaded plate were considered along with the related parameters of the blast' energy, the yield strength of the material, the plate thickness and dimensions of the confined space. By analyzing the experimental data of plates subjected to confined blast loading, an approximately linear relationship between the midpoint deflection–thickness ratio of the target plate and the new dimensionless number was derived. On this basis, an empirical formula to predict the deflection of square plates subjected to fully confined blast loading was subsequently regressed, and its calculated results agree well with the experimental data. Furthermore, numerical simulations of square plates subjected to blast loading in a cuboid chamber with different lengths were performed. The numerical results were compared with the calculated data to verify the applicability of the present empirical formula in different scenarios of blast loading from explosions in a cuboid space. It is indicated that the new dimensionless number and corresponding empirical formula presented in this paper have good applicability and reliability for the deflection prediction of plates subjected to fully confined explosions in a cuboid chamber with different lengths, especially when the plates experience a large deflection–thickness ratio. Full article
(This article belongs to the Special Issue Accidental Limit States of Marine Structures)
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23 pages, 5148 KiB  
Article
Progressive Collapse Analysis of Intact and Damaged Ships under Unsymmetrical Bending
by Burak Can Cerik and Joonmo Choung
J. Mar. Sci. Eng. 2020, 8(12), 988; https://doi.org/10.3390/jmse8120988 - 4 Dec 2020
Cited by 5 | Viewed by 3044
Abstract
This study examined the hull girder strength of intact and damaged ships by adopting the incremental-iterative method for progressive collapse analysis, which was extended to the general case of the unsymmetrical bending of beams with an arbitrary cross-section. The sources of an unsymmetrical [...] Read more.
This study examined the hull girder strength of intact and damaged ships by adopting the incremental-iterative method for progressive collapse analysis, which was extended to the general case of the unsymmetrical bending of beams with an arbitrary cross-section. The sources of an unsymmetrical loading, including rotation of the loading plane and section asymmetry caused by structural damage, are described. A fast and robust procedure is presented to determine the translation and rotation of the instantaneous neutral axis at each curvature increment when applying Smith’s progressive collapse analysis method. A series of analyses were conducted on a double hull VLCC and a bulk carrier, considering various loading plane angles and damage conditions. The decrease in ultimate strength and the influences of rotation of the instantaneous neutral axis and ship heeling are discussed. The proposed method can be used for a rapid and rational assessment of the hull girder strength under adverse conditions. Full article
(This article belongs to the Special Issue Accidental Limit States of Marine Structures)
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24 pages, 12335 KiB  
Article
A Useful Manufacturing Guide for Rotary Piercing Seamless Pipe by ALE Method
by Ameen Topa, Burak Can Cerik and Do Kyun Kim
J. Mar. Sci. Eng. 2020, 8(10), 756; https://doi.org/10.3390/jmse8100756 - 27 Sep 2020
Cited by 6 | Viewed by 6252
Abstract
The development of numerical simulations is potentially useful in predicting the most suitable manufacturing processes and ultimately improving product quality. Seamless pipes are manufactured by a rotary piercing process in which round billets (workpiece) are fed between two rolls and pierced by a [...] Read more.
The development of numerical simulations is potentially useful in predicting the most suitable manufacturing processes and ultimately improving product quality. Seamless pipes are manufactured by a rotary piercing process in which round billets (workpiece) are fed between two rolls and pierced by a stationary plug. During this process, the material undergoes severe deformation which renders it impractical to be modelled and analysed with conventional finite element methods. In this paper, three-dimensional numerical simulations of the piercing process are performed with an arbitrary Lagrangian–Eulerian (ALE) formulation in LS-DYNA software. Details about the material model as well as the elements’ formulations are elaborated here, and mesh sensitivity analysis was performed. The results of the numerical simulations are in good agreement with experimental data found in the literature and the validity of the analysis method is confirmed. The effects of varying workpiece velocity, process temperature, and wall thickness on the maximum stress levels of the product material/pipes are investigated by performing simulations of sixty scenarios. Three-dimensional surface plots are generated which can be utilized to predict the maximum stress value at any given combination of the three parameters. Full article
(This article belongs to the Special Issue Accidental Limit States of Marine Structures)
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