Marine Structures最新文献_第10页

Numerical study of wave forces on truncated cylinder arrays generated by focused waves 聚焦波对截短圆柱阵列波浪力的数值研究

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-15 Epub Date: 2025-08-05 DOI: 10.1016/j.marstruc.2025.103907

Qinghe Fang , Hui Wang , Hanchen Zhang , Chunhui Liu , Yongfu Wu , Zaixian Chen , Anxin Guo

{"title":"Numerical study of wave forces on truncated cylinder arrays generated by focused waves","authors":"Qinghe Fang , Hui Wang , Hanchen Zhang , Chunhui Liu , Yongfu Wu , Zaixian Chen , Anxin Guo","doi":"10.1016/j.marstruc.2025.103907","DOIUrl":"10.1016/j.marstruc.2025.103907","url":null,"abstract":"<div><div>Vertical cylinders are commonly used as foundation supports in offshore engineering. Wave forces on a single cylinder have been widely studied and developed into methods for calculating wave loads. However, wave forces on truncated cylinder arrays, representing floating foundations, have been rarely investigated. In this study, the wave forces on truncated cylinder arrays in 2 × 2 and 4 × 4 configurations generated by focused waves were numerically studied. The numerical model was established with the volume of fluid (VOF) method and the <em>k-ω SST</em> turbulence model based on OpenFOAM. The model accuracy was validated against experimental data from literature. The array effect was discussed by comparing the characteristics of wave forces on truncated cylinders at different positions. It was found that there is a nonlinear relationship between wave forces on cylinder arrays and wave amplitude. The wave force distributions of cylinder arrays show strong symmetry relative to wave incidence, with minimal amplitude variations across columns, while enlarged arrays amplify phase modulation. Surrounding cylinders provide significant sheltering effects to inner cylinders. Besides, the spectra of wave force on truncated cylinders were modulated by the spectral characteristics of incident focused waves. An empirical prediction method based on peak wave frequency was proposed to estimate dimensionless wave forces and their spatial distribution within cylinder arrays. This study enhances the understanding of wave force distributions on cylinder arrays under extreme wave and provides valuable insights into structural design of offshore structures.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"105 ","pages":"Article 103907"},"PeriodicalIF":5.1,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144772102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical study of rectangular foam core sandwich plate under low velocity ice wedge impact 低速冰楔冲击下矩形泡沫芯夹芯板的理论研究

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-15 Epub Date: 2025-08-06 DOI: 10.1016/j.marstruc.2025.103920

Wen Xiao , Yong Hu , Yinggang Li

{"title":"Theoretical study of rectangular foam core sandwich plate under low velocity ice wedge impact","authors":"Wen Xiao , Yong Hu , Yinggang Li","doi":"10.1016/j.marstruc.2025.103920","DOIUrl":"10.1016/j.marstruc.2025.103920","url":null,"abstract":"<div><div>In this study, a theoretical model is developed to investigate the impact response of rectangular foam-core sandwich plates subjected to low velocity ice wedge impacts. By employing the pressure-area (P-A) relationship of ice wedge and the yield criterion for foam-core sandwich cross-sections, the ice fragmentation energy dissipation and structural plastic deformation energy dissipation are respectively solved. Based on the shared-energy dissipation mechanism and iterative solution of ice impact response, the plastic deformation and energy dissipation characteristics of rectangular foam core sandwich plates under low velocity ice wedge impact are derived. The analytical predictions are compared with the numerical and experimental results to verify the accuracy of theoretical model. Besides, the effects of impact positions and ice wedge thickness as well as aspect ratio on dynamic response of rectangular foam core sandwich plate under low velocity ice wedge impact are studied. Results demonstrate that the analytical predictions for plastic deformation and ice fragmentation energy agree well with numerical and experimental results. This work provides an important guidance for the structural design and safety analysis of rectangular foam core sandwich plate under ice impact.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"105 ","pages":"Article 103920"},"PeriodicalIF":5.1,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A probabilistic framework for assessing vessel impact on bridges considering technical failures: insights from the Baltimore accident case study 考虑技术故障评估船舶对桥梁影响的概率框架：来自巴尔的摩事故案例研究的见解

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-15 Epub Date: 2025-08-05 DOI: 10.1016/j.marstruc.2025.103906

Lucjan Gucma , Milan Batista , Marko Perkovič

{"title":"A probabilistic framework for assessing vessel impact on bridges considering technical failures: insights from the Baltimore accident case study","authors":"Lucjan Gucma , Milan Batista , Marko Perkovič","doi":"10.1016/j.marstruc.2025.103906","DOIUrl":"10.1016/j.marstruc.2025.103906","url":null,"abstract":"<div><div>This article presents new probabilistic approach to assessing the risk of collisions between ships and bridges, focusing specifically on the incident involving the container ship Dali and the collapse of the Francis Scott Key Bridge in Baltimore. Current risk models are significantly limited, particularly given the evolution of navigation practices and the adoption of ultra-precise positioning systems. The proposed method enhances predictive capability by incorporating three categories of technical ship failure: loss of power supply, failure of the main engine, and malfunction of the steering gear. A simulation-based reconstruction of the Dali incident was conducted using the NTPro 6000 full-mission bridge simulator. This reconstruction forms the basis for an in-depth analysis of four critical components: (1) the probable technical cause(s) of the accident; (2) key stakeholders and influencing factors in the risk profile of ship-to-bridge interactions; (3) engineering and procedural options for mitigating bridge strike incidents; and (4) expert assessment of feasible preventive measures, particularly those available to maritime pilots. The study includes the results of a targeted survey of maritime professionals, including pilots and captains. The survey aimed to evaluate the effectiveness of current preventive protocols and to identify potential gaps in training, coordination, and technical response in emergency situations. The findings provide valuable insights into the dynamics of maritime accidents in confined waters and propose a structured approach to enhancing risk assessment methodologies through the use of realistic failure scenarios and expert-informed analysis.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"105 ","pages":"Article 103906"},"PeriodicalIF":5.1,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144772218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Digital twin-driven structure safety monitoring method for revolving floating cranes based on multi-fidelity surrogate models 基于多保真度代理模型的旋转式浮式起重机双驱动结构安全监测方法

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-15 Epub Date: 2025-08-30 DOI: 10.1016/j.marstruc.2025.103925

Xiaobang Wang , Hao Wang , Shuo Wang , Jialin Jiang , Bing Liang , Zhijie Liu

{"title":"Digital twin-driven structure safety monitoring method for revolving floating cranes based on multi-fidelity surrogate models","authors":"Xiaobang Wang , Hao Wang , Shuo Wang , Jialin Jiang , Bing Liang , Zhijie Liu","doi":"10.1016/j.marstruc.2025.103925","DOIUrl":"10.1016/j.marstruc.2025.103925","url":null,"abstract":"<div><div>The Revolving Floating Crane (RFC) plays a crucial role in offshore lifting operations, making its operational safety a top priority. However, large lifting loads and harsh conditions during manual operations can cause unstable postures or structural failures, potentially leading to serious economic losses and personal injuries. To address these safety concerns, comprehensive monitoring of RFC operations is essential. Thus, this study proposes a digital twin (DT)-driven structure safety monitoring method based on multi-fidelity surrogate model (MFSM). In the implementation, the structural and functional characteristics of actual RFCs are referenced to build an RFC physical entity. By identifying key operational safety indicators, a sensor-based data acquisition module for RFC entity is developed. Relying on the entity, finite element simulations and actual experiments are then conducted to generate multi-fidelity training data of RFC operational safety, which are used to establish corresponding MFSMs. By Unity3D engine, a virtual interaction platform for data fusion is created for safety monitoring, enabling real-time synchronization from the RFC physical entity to DT model. Finally, physical safety monitoring experiments are conducted on RFC lifting operations. Experiment results demonstrate that the proposed method delivers high real-time performance and accuracy, effectively meeting the engineering requirements for RFC lifting safety monitoring.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"105 ","pages":"Article 103925"},"PeriodicalIF":5.1,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical characterization of bend-twist coupling behavior in composite marine hydro-kinetic turbine blades 船用复合水动力涡轮叶片弯扭耦合性能的力学表征

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-15 Epub Date: 2025-08-20 DOI: 10.1016/j.marstruc.2025.103924

Miguel A. González-Montijo , Katherine Van Ness , Zack Tully , Richard Wiebe , Brian Polagye , Michael R. Motley

{"title":"Mechanical characterization of bend-twist coupling behavior in composite marine hydro-kinetic turbine blades","authors":"Miguel A. González-Montijo , Katherine Van Ness , Zack Tully , Richard Wiebe , Brian Polagye , Michael R. Motley","doi":"10.1016/j.marstruc.2025.103924","DOIUrl":"10.1016/j.marstruc.2025.103924","url":null,"abstract":"<div><div>Bend-twist coupling is a phenomenon in some structures whereby bending moments produce not only transverse deflection, but also twist. Recent decades have seen a growing trend toward exploiting this mechanism to advance the performance of structures. This coupling effect can be caused by geometric factors such as eccentric loading, or it can be induced by leveraging the anisotropic nature of fiber-matrix composites. This study focuses on the purposeful use of unbalanced layups in laminated fiber-reinforced polymer spars to tailor bend-twist coupling behavior.</div><div>An especially promising application of bend-twist coupled composite structures is their potential use in marine energy turbines. Recent efforts have shown that bend-twist coupling can be used to reduce loading on turbine blades in overload conditions, thereby improving their robustness, without significantly reducing power generation under normal operating conditions. This work robustly characterizes, using both experimental and numerical methods, the relationship between the effective fiber angle (a design parameter) and the: (i) degree of bend-twist coupling, (ii) bending stiffness, and (iii) natural frequencies (system properties) of laminated composite blades. The outcomes of this work will help designers choose the optimal fiber angles for specific applications and will serve as a strong benchmark for the validation of computational models.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"105 ","pages":"Article 103924"},"PeriodicalIF":5.1,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on plasma arc penetration process of abandoned offshore wells 海上废弃井等离子弧穿透过程研究

IF 4 2区工程技术

Marine Structures Pub Date : 2025-10-15 Epub Date: 2025-07-03 DOI: 10.1016/j.marstruc.2025.103889

Peng Liu , Yonghong Liu , Qingxiang Wang , Xinlei Wu , Chi Ma

{"title":"Study on plasma arc penetration process of abandoned offshore wells","authors":"Peng Liu , Yonghong Liu , Qingxiang Wang , Xinlei Wu , Chi Ma","doi":"10.1016/j.marstruc.2025.103889","DOIUrl":"10.1016/j.marstruc.2025.103889","url":null,"abstract":"<div><div>Recently, massive numbers of offshore production platforms have faced decommissioning. Abandoned offshore wells demolition is a significant part of offshore platform decommissioning. This work explored the plasma arc penetration process of abandoned offshore wells. Three types of workpieces were made for underwater penetration experiments. Workpiece 1 was a single-layer steel plate, workpiece 2 was a double-layer steel plate with a gap, and workpiece 3 was a double-layer steel plate with a cement layer. It was found that slag bridging occurred during the penetration of workpiece 2. Slag bridging was closely related to the gap size. There was no slag bridging during the penetration of workpiece 3, but its penetration difficulty was the greatest among the three working conditions. It was also found that the penetration effect of the second steel plate was strongly influenced by the branching arc acting on the second steel plate. The wider the gap and the cement layer, the lower the branching arc current on the second steel plate and the worse the penetration effect. In summary, the plasma arc can penetrate all three types of workpieces under certain operating conditions. This technology is expected to play a significant role in abandoned offshore wells demolition.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"104 ","pages":"Article 103889"},"PeriodicalIF":4.0,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analytical formulation for natural frequency of monopile-supported offshore wind turbine: Calibration and application 单桩支撑海上风力机固有频率解析公式：校准与应用

IF 4 2区工程技术

Marine Structures Pub Date : 2025-10-15 Epub Date: 2025-07-23 DOI: 10.1016/j.marstruc.2025.103901

Fangyu Wu , Zhongxuan Yang , Subhamoy Bhattacharya , Rongqiao Xu , Sai Fu

{"title":"Analytical formulation for natural frequency of monopile-supported offshore wind turbine: Calibration and application","authors":"Fangyu Wu , Zhongxuan Yang , Subhamoy Bhattacharya , Rongqiao Xu , Sai Fu","doi":"10.1016/j.marstruc.2025.103901","DOIUrl":"10.1016/j.marstruc.2025.103901","url":null,"abstract":"<div><div>The dynamic response of monopile supported offshore wind turbines (OWT) plays a critical role in their structural design optimization. During the design optimization process, various methods, including numerical simulations and closed-form solutions, are used to analyze the free vibration behavior of monopile-supported OWTs. This study introduces an analytical model based on the Rayleigh-Ritz method to derive a fast yet accurate estimation formula for natural frequencies.</div><div>Given the increasing deployment of OWTs in deeper waters with complex seabed conditions prone to scouring, as well as the trend toward larger turbine sizes, the calibrated model and Rayleigh-Ritz formula are applied to assess the effects of scouring on natural frequencies across different turbine scales. The study also examines the relationship between the natural frequencies computed using a fixed-base assumption and the effect of foundation flexibility, accounting for variations in ground conditions. Furthermore, the work explores frequency trends across multiple turbines scales and identifies feasible turbine sizes for deployment in four specific seas of China.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"104 ","pages":"Article 103901"},"PeriodicalIF":4.0,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural optimization of non-rotating floating cranes: Analysis of classical designs and development of a dual-pontoon configuration 非旋转浮式起重机结构优化：经典设计分析及双浮桥结构的发展

IF 4 2区工程技术

Marine Structures Pub Date : 2025-10-15 Epub Date: 2025-07-11 DOI: 10.1016/j.marstruc.2025.103897

Sergey G. Gnezdilov , Alexander N. Shubin

引用次数: 0

Theoretical analysis of elastic collapse in metallurgical clad pipes under external pressure 外压作用下冶金包层管道弹性坍塌的理论分析

IF 4 2区工程技术

Marine Structures Pub Date : 2025-10-15 Epub Date: 2025-06-20 DOI: 10.1016/j.marstruc.2025.103861

Mingjie Hu , Haohong Jian , Menglan Duan , Qiwei Wu , Weifeng Zheng

{"title":"Theoretical analysis of elastic collapse in metallurgical clad pipes under external pressure","authors":"Mingjie Hu , Haohong Jian , Menglan Duan , Qiwei Wu , Weifeng Zheng","doi":"10.1016/j.marstruc.2025.103861","DOIUrl":"10.1016/j.marstruc.2025.103861","url":null,"abstract":"<div><div>Metallurgical Clad Pipes (MCPs), due to their unique manufacturing process and excellent corrosion resistance, are key equipment for transporting highly corrosive oil and gas in offshore systems. However, the high external hydrostatic pressure in deep-sea environments poses significant risks of collapse, threatening the structural safety of MCPs. In this research, the elastic collapse performance of MCPs under external pressure is investigated by deriving a novel analytical formula based on Donnell shell theory and the Ritz method. The proposed formula considers the perpendicularity of pressure during deformation and is validated through comparisons with the DNV-ST-F101 formula and FEM simulations. The findings demonstrate that the elastic post buckling equilibrium path of MCPs follows the same pattern as that of conventional single-metal pipelines. Moreover, the proposed formula shows improved accuracy and greater applicability to various geometric properties and materials. Research works may provide a theoretical basis to improve the design and safety of MCPs and contribute to the ongoing development of offshore pipeline engineering.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"104 ","pages":"Article 103861"},"PeriodicalIF":4.0,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fatigue damage prediction model for broadband non-Gaussian random processes based on Bayesian optimized random forest 基于贝叶斯优化随机森林的宽带非高斯随机过程疲劳损伤预测模型

IF 4 2区工程技术

Marine Structures Pub Date : 2025-10-15 Epub Date: 2025-07-10 DOI: 10.1016/j.marstruc.2025.103894

Kuilin Yuan , Boyu Huang , Hanchu Qin

{"title":"Fatigue damage prediction model for broadband non-Gaussian random processes based on Bayesian optimized random forest","authors":"Kuilin Yuan , Boyu Huang , Hanchu Qin","doi":"10.1016/j.marstruc.2025.103894","DOIUrl":"10.1016/j.marstruc.2025.103894","url":null,"abstract":"<div><div>Marine structures operating in harsh ocean environments are continuously exposed to cyclic loads that may induce fatigue damage. Accurate fatigue damage prediction is therefore essential for ensuring the structural integrity of marine structures. When the structural responses exhibit broadband non-Gaussian characteristics, the existing frequency-domain methods appears to have insufficient accuracy. Although the time-domain rainflow counting method can achieve higher accuracy, it incurs high computational costs. To address these challenges, this study develops a fatigue damage prediction model for broadband non-Gaussian random processes by combining the random forest (RF) algorithm with Bayesian optimization (BO) approach. The BO-RF model is trained by employing the database including the fatigue damage related to diverse power spectra with a broad range of bandwidth parameters and a variety of S-N curve slope, skewness and kurtosis. Extensive numerical simulations demonstrate that the developed BO-RF model is superior to the tradition frequency-domain methods in terms of accuracy and robustness. Furthermore, comparative analysis against an artificial neural network (ANN) model further reveals the advantages of BO-RF model in both training efficiency and generalization capability. This study demonstrates the proposed BO-RF model can provide a feasible solution for accurate and efficient fatigue damage prediction of marine structures under broadband non-Gaussian random loading.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"104 ","pages":"Article 103894"},"PeriodicalIF":4.0,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0