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Advanced Analysis of Ship and Offshore Structures
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Advanced Analysis of Ship and Offshore 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 (1 May 2026) | Viewed by 2497

Special Issue Editors

Prof. Dr. Chenfeng Li

E-Mail Website
Guest Editor
College of Shipbuilding Engineering, Harbin Engineering University, Harbin, China
Interests: ship and offshore structure; fatigue and fracture; buckling and ultimate strength; reliability and risk assessment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Kun Liu

E-Mail Website
Guest Editor
School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
Interests: ship structure; lightweight structure; material mechanics; ship collision and grounding; vibration and noise
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bin Liu

E-Mail Website
Guest Editor
Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Centre, Wuhan University of Technology, Wuhan, China
Interests: ship structure; material mechanic; strength assessment; ultimate strength; impact strength
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the design of ship and offshore structures, a critical challenge lies in the accurate prediction of structural strength under various loading conditions—particularly impact, ultimate, and fatigue strength. This Special Issue seeks to present advances in the structural analysis of marine systems, and recent progress in the design and evaluation of ships and offshore platforms. Contributions are encouraged on the mechanical analysis of advanced materials—such as alloys and composites—and strength evaluations of innovative structural forms, including sandwich configurations, with the aim of achieving lightweight, safe, and cost-effective marine structures over their entire service life. Topics of interest include, but are not limited to, the following: strength assessment of ship structures; mechanical characterization of shipbuilding materials; design and optimization of lightweight architectures; impact strength of marine structures; ultimate strength of plates, stiffened panels, and hull girders; fatigue and fracture evaluation of ship structures; vibration and noise analysis; corrosion effects; steel and aluminum alloy structures; and composite structures.

Prof. Dr. Chenfeng Li
Prof. Dr. Kun Liu
Prof. Dr. Bin Liu
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 250 words) can be sent to the Editorial Office for assessment.

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 semimonthly 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

  • marine structure
  • strength assessment
  • impact strength
  • ultimate strength
  • fatigue strength
  • structural design
  • advanced material and structure
  • structural optimization

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Published Papers (5 papers)

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Research

20 pages, 1328 KB  
Article
Bayesian-Optimized Neural Networks with High-Fidelity FEM for Intelligent Residual Strength Prediction in Damaged Ships
by Jianxiao Deng, Fei Peng, Jinlei Mu and Hailiang Hou
J. Mar. Sci. Eng. 2026, 14(9), 840; https://doi.org/10.3390/jmse14090840 - 30 Apr 2026
Viewed by 122
Abstract
The rapid and accurate assessment of residual ultimate strength after ship damage is crucial for rescue decision-making and navigation safety, while traditional methods struggle to meet the demands of complex random damage scenarios in terms of efficiency or accuracy. This study proposes a [...] Read more.
The rapid and accurate assessment of residual ultimate strength after ship damage is crucial for rescue decision-making and navigation safety, while traditional methods struggle to meet the demands of complex random damage scenarios in terms of efficiency or accuracy. This study proposes a hybrid framework that integrates high-fidelity nonlinear finite element simulation (NFEM) and a Bayesian-regularized backpropagation neural network (BPNN). NFEM is used to accurately simulate a large number of random damage scenarios, generating a physically credible benchmark dataset. BPNN serves as an efficient surrogate prediction model, with its key parameters—the number of hidden layers and the training algorithm—systematically optimized to enhance generalization capability. The results show that: (1) The NFEM simulation results deviate by less than 5% compared to the Smith method, validating the reliability of the dataset. (2) The prediction performance of BPNN is highly dependent on the number of hidden layers and the training algorithm, exhibiting non-monotonic variation, with an optimal parameter combination identified as 8 hidden layers paired with the Bayesian algorithm, achieving a prediction regression value R of 0.91662. (3) Deep networks are prone to overfitting, while shallow networks suffer from insufficient feature capture. (4) The Bayesian algorithm performs best in terms of overfitting resistance and stability. This study not only provides a high-precision and efficient intelligent solution for residual strength assessment of damaged hulls, but its systematic neural network parameter optimization strategy, particularly the approach of identifying optimal depth and selecting anti-overfitting algorithms, also offers an important reference for the design of intelligent damage assessment models for similar engineering structures. Full article
(This article belongs to the Special Issue Advanced Analysis of Ship and Offshore Structures)
25 pages, 4082 KB  
Article
Time-Domain Hydroelastic Analysis of Floating Structures Under Nonlinear Shallow-Water Waves over Variable Bathymetry
by Xu Duan, Xiaoyu Chen, Yujin Dong and Yuwang Xu
J. Mar. Sci. Eng. 2026, 14(8), 729; https://doi.org/10.3390/jmse14080729 - 15 Apr 2026
Viewed by 399
Abstract
Photovoltaic systems deployed on large floating platforms in nearshore waters are strongly influenced by hydroelastic effects, nonlinear shallow-water waves, and variable bathymetry. This study develops a time-domain hydroelastic framework that couples the fully nonlinear non-hydrostatic wave model NHWAVE with a Rankine-source potential-flow solver [...] Read more.
Photovoltaic systems deployed on large floating platforms in nearshore waters are strongly influenced by hydroelastic effects, nonlinear shallow-water waves, and variable bathymetry. This study develops a time-domain hydroelastic framework that couples the fully nonlinear non-hydrostatic wave model NHWAVE with a Rankine-source potential-flow solver and a discrete-module Cummins formulation. The wave model provides incident pressures and kinematics over uneven seabeds, while the potential-flow solver evaluates radiation and diffraction effects and transfers the resulting hydrodynamic coefficients into the time domain. Numerical simulations are carried out for a 600 m modular floating structure under regular waves over flat and sloped bathymetries with tanα=0.0133, wave periods of 4–6 s, and wave heights of 0.3–1.0 m. The results show that bathymetric variation intensifies shoaling-induced excitation, modifies added-mass and damping distributions, increases the spatial non-uniformity of hydroelastic motions, and amplifies bending-moment RMS responses relative to the flat-bottom case. Additional comparisons between rigid-body and hydroelastic models show clear period-dependent redistribution of motions and bending demand. These results demonstrate that both local bathymetry and structural elasticity must be considered for the reliable analysis and design of nearshore floating photovoltaic systems and other large floating structures. Full article
(This article belongs to the Special Issue Advanced Analysis of Ship and Offshore Structures)
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24 pages, 6248 KB  
Article
Structural Performance and Weight-Efficiency Trade-Offs of Bulb and Angle Stiffeners in Imperfection-Sensitive Plate Buckling and Collapse
by Myung-Su Yi, Da-Bin Jung and Joo-Shin Park
J. Mar. Sci. Eng. 2026, 14(5), 515; https://doi.org/10.3390/jmse14050515 - 9 Mar 2026
Viewed by 401
Abstract
This study presents a mechanics-based comparison of the buckling and ultimate strength behavior of stiffened plates reinforced with bulb-type and built-in angle stiffeners, with particular emphasis on the trade-off between structural performance and weight efficiency. Although these stiffener types are commonly treated as [...] Read more.
This study presents a mechanics-based comparison of the buckling and ultimate strength behavior of stiffened plates reinforced with bulb-type and built-in angle stiffeners, with particular emphasis on the trade-off between structural performance and weight efficiency. Although these stiffener types are commonly treated as equivalent when designed to provide the same sectional moment of inertia, their nonlinear collapse behavior under realistic loading conditions has not been sufficiently quantified. To address this gap, a two-stage finite element framework is employed, consisting of linear eigenvalue buckling analysis to identify imperfection-sensitive modes, followed by geometrically and materially nonlinear imperfection analysis (GMNIA) to capture post-buckling behavior and ultimate strength. High-fidelity three-dimensional solid models incorporating classification-society-based material properties are used to simulate axially compressed stiffened plates representative of jack-up rig Living Quarter structures. The results demonstrate that, while both stiffener types exhibit comparable elastic buckling resistance, their nonlinear responses differ in terms of stiffness degradation, stress redistribution, and collapse localization. Importantly, the angle stiffener achieves an ultimate strength comparable to that of the elastically equivalent bulb stiffener while requiring less material, thereby exhibiting superior weight efficiency. These findings indicate that elastic equivalence alone is insufficient for optimal stiffener selection and highlight the necessity of nonlinear, imperfection-sensitive assessment in the design of lightweight and high-performance marine structures. Full article
(This article belongs to the Special Issue Advanced Analysis of Ship and Offshore Structures)
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17 pages, 3239 KB  
Article
Nonlinear Response of Four-Tier Container Multiple Stacks with Different Lashing Approach Under Dynamic Excitation
by Qingbo Zeng, Yuheng Ji, Juyan Zheng, Pengyu Wei, Chuntong Li and Deyu Wang
J. Mar. Sci. Eng. 2026, 14(3), 292; https://doi.org/10.3390/jmse14030292 - 2 Feb 2026
Viewed by 395
Abstract
This study delves into the nonlinear dynamic response of four-tier dual stacks subjected to dynamic excitation and employs internal and external lashing methods to identify causes of container damage and lashing failure. Researchers constructed a scaled model based on Froude scaling laws and [...] Read more.
This study delves into the nonlinear dynamic response of four-tier dual stacks subjected to dynamic excitation and employs internal and external lashing methods to identify causes of container damage and lashing failure. Researchers constructed a scaled model based on Froude scaling laws and used a shaking table to simulate the dynamic excitation. By integrating numerical simulations with model experiments, the study systematically analyzed the displacement and acceleration responses of the container stacks, with particular focus on nonlinear factors such as sliding and collision. The results reveal that exceeding specific critical points in excitation amplitude and frequency leads to the gradual overcoming of friction between adjacent container corner castings, resulting in noticeable relative sliding and collision. Twist lock gaps significantly worsen collision behavior, highlighting their critical impact on the stacking system’s nonlinear collision dynamics. Additionally, under conditions of high-amplitude and high-frequency excitation, external lashing schemes proved more stable and resistant to collisions than internal ones. The study also emphasizes that collisions between adjacent stacks can trigger load redistribution, thereby altering the stack’s load transfer path and impacting the stability of the entire stacking and lashing system. Full article
(This article belongs to the Special Issue Advanced Analysis of Ship and Offshore Structures)
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28 pages, 4241 KB  
Article
Coupled Responses and Performance Assessment of Mooring-Connection Systems for Floating Photovoltaic Arrays in Shallow Waters
by Xiao Wang, Shuqing Wang, Xiancang Song and Bingtao Song
J. Mar. Sci. Eng. 2026, 14(2), 117; https://doi.org/10.3390/jmse14020117 - 7 Jan 2026
Cited by 1 | Viewed by 522
Abstract
Offshore floating photovoltaic (FPV) platforms are usually deployed in shallow waters with large tidal variations, where the modules of FPV are connected with each other via the connectors to form an array and mounted to the seabed via the mooring system. Therefore, the [...] Read more.
Offshore floating photovoltaic (FPV) platforms are usually deployed in shallow waters with large tidal variations, where the modules of FPV are connected with each other via the connectors to form an array and mounted to the seabed via the mooring system. Therefore, the mooring system and module connectors have significant influence on the dynamic response characteristics of FPV. In targeting such shallow waters with large tidal ranges, this paper proposes four integrated mooring-connection schemes based on configuration and parameter customization guided by adaptability optimization, including two kinds of mooring systems, named as horizontal mooring system and catenary mooring system with clumps, and two kinds of connection schemes, named as cross-cable connection and hybrid connection, are proposed. The feasibility of the mooring systems to adhere to the tidal range and the influence of the connection schemes on the dynamic response of the FPV are numerically investigated in detail. Results indicate the two mooring systems have comparable positioning performance; horizontal mooring offers slightly better tidal adaptability but much higher mooring tension, compromising system safety. Hybrid connection yields smaller surge amplitudes than cross-cable connection but generates excessively large connection forces, also posing safety risks. Comprehensive comparison indicates that catenary mooring with clumps combined with cross-cable connection imposes lower requirements on platform structural safety factors, while horizontal mooring with cross-cable connection exhibits stronger adaptability to water level and environmental load direction changes in shallow waters. Full article
(This article belongs to the Special Issue Advanced Analysis of Ship and Offshore Structures)
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