Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment最新文献_第2页

Reliability analysis method of the hull structure based on generalized polynomial chaos 基于广义多项式混沌的船体结构可靠性分析方法

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-08-02 DOI: 10.1177/14750902241265883

Jian Wang, Jun Wang, Xiaofeng Liang, Yafeng Liu, Hong Yi

{"title":"Reliability analysis method of the hull structure based on generalized polynomial chaos","authors":"Jian Wang, Jun Wang, Xiaofeng Liang, Yafeng Liu, Hong Yi","doi":"10.1177/14750902241265883","DOIUrl":"https://doi.org/10.1177/14750902241265883","url":null,"abstract":"The complexity of hull-structure calculation and the diversity of random distributions of uncertainty factors necessitate structural reliability analysis methods that are cost-effective, efficient and adaptable to multiple distributions. This paper proposes a novel reliability analysis method of the hull structure based on Generalized Polynomial Chaos (GPC). GPC surrogate models for performance functions are developed for two typical cases with different distributions within the hull structure. The variations in mean, standard deviation, reliability index and failure probability with respect to GPC expansion order and sample size are analysed and compared with traditional methods, including Monte Carlo (MC) and the First-Order Reliability Method (FORM). The results indicate that the GPC-based method is effective for handling random variables of various distributions in hull structures. Moreover, the proposed method demonstrates superior convergence and accuracy compared to MC and FORM. By circumventing the need for extensive sample calculations for real structural models, the GPC-based method enhances computational efficiency. The feasibility and efficiency of the GPC-based structural reliability analysis method are validated, offering a promising new approach for assessing the reliability of hull structures.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"187 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Numerical study on the effect of SLWR buoyancy configuration on pipe-soil interaction based on co-rotational method 基于同向旋转法的单向绕流式浮力配置对管道-土壤相互作用影响的数值研究

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-08-02 DOI: 10.1177/14750902241266127

Shujiang Wang, Jijun Gu, Leilei Chen, Jichuan Jia, Jun Huang, Lei Gao

{"title":"Numerical study on the effect of SLWR buoyancy configuration on pipe-soil interaction based on co-rotational method","authors":"Shujiang Wang, Jijun Gu, Leilei Chen, Jichuan Jia, Jun Huang, Lei Gao","doi":"10.1177/14750902241266127","DOIUrl":"https://doi.org/10.1177/14750902241266127","url":null,"abstract":"The buoyancy module installed on the steel lazy-wave riser makes the riser locally S-shaped, which weakens the motion transmission from the top to the bottom but makes the pipe-soil interaction more susceptible to the buoyancy configuration. In this study, a two-dimensional planar static numerical model considering the riser global motion coupled with the nonlinear seabed interaction is developed. The planar co-rotating beam element is established based on the co-rotating coordinate method, the vertical soil resistance is simulated by the semi-empirical pipe-soil interaction model. And the global displacement of the riser and the soil resistance of the seabed are coupled in the co-rotational framework by the principle of minimum potential energy. Finally, the parametric effects of buoyancy configurations and riser structural characteristics are analysed. The results show that the established numerical model is suitable for solving the vertical pipe-soil interaction between riser and nonlinear seabed. Compared with SCR, the maximum embedment depth of SLWR in the TDZ is reduced by 23.5%, and the maximum vertical soil resistance is reduced by 8.26%. In the two buoyancy configuration adjustment methods, increasing the buoyancy section length obviously changes the shape of SLWR, resulting in significant changes in the embedment depth and vertical soil resistance.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"55 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Path following of underactuated surface vessels based active disturbance rejection control considering lateral drift 基于主动干扰抑制控制的欠驱动水面舰艇路径跟踪（考虑横向漂移

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-07-31 DOI: 10.1177/14750902241266299

Hugan Zhang, Xianku Zhang, Shihang Gao, Daocheng Ma

引用次数: 0

A new model for multi-port berth allocation problem based on an improved genetic algorithm 基于改进遗传算法的多港口泊位分配问题新模型

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-07-31 DOI: 10.1177/14750902241267039

Shuang Tang, Sudong Xu, Kai Yin, Nini Zhang, Liuyan Mao, Xiangtong Chen

{"title":"A new model for multi-port berth allocation problem based on an improved genetic algorithm","authors":"Shuang Tang, Sudong Xu, Kai Yin, Nini Zhang, Liuyan Mao, Xiangtong Chen","doi":"10.1177/14750902241267039","DOIUrl":"https://doi.org/10.1177/14750902241267039","url":null,"abstract":"Port integration can enhance operational efficiency and service level in response to heightened competition among container ports. Nevertheless, container ports are still considered independent systems separately in formulating scheduling plans. This research explores a new multi-port berth allocation problem (MPBAP) with continuous berth layout considering the mutual influence between ports. The MPBAP is compared with the single port berth allocation, and effects of different numbers of vessels continuously berthing at all ports on a single route on the MPBAP are discussed through vessel operation rate. The problem is formulated by a mixed integer programming model by minimising the total port stay time of all vessels. The quay is highly discretised and a GA coupled with parallel computing is applied to accelerate the search for the optimal model solution. A case study is conducted on two adjacent container ports located along the Yangtze River. Results show that multi-port coordinated scheduling is efficiency and the total port stay time of all vessels reduces by an average of 2.63% under the MPBAP. With more than four vessels berthing continuously at two ports on a single route, the MPBAP shows a higher vessel operation rate and the rate gap between the two models exceeds 2%. The approach suggested in this study can enhance the port system’s efficiency and provide a new idea for coordinated scheduling in other port groups.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"51 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Cybersecurity risk assessment of a marine dual-fuel engine on inland waterways ship 内河船舶船用双燃料发动机的网络安全风险评估

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-07-29 DOI: 10.1177/14750902241265173

Victor Bolbot, La Xiang, Päivi Brunou, Mikko Kiviharju, Yu Ding, Osiris Valdez Banda

引用次数: 0

Fault feature extraction, feature fusion, and severity identification approaches for AUVs with weak thruster faults 针对存在弱推进器故障的自动潜航器的故障特征提取、特征融合和严重性识别方法

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-07-29 DOI: 10.1177/14750902241266118

Dingyu Cui, Tianchi Zhang, Mingjun Zhang, Xing Liu

{"title":"Fault feature extraction, feature fusion, and severity identification approaches for AUVs with weak thruster faults","authors":"Dingyu Cui, Tianchi Zhang, Mingjun Zhang, Xing Liu","doi":"10.1177/14750902241266118","DOIUrl":"https://doi.org/10.1177/14750902241266118","url":null,"abstract":"Fault feature extraction, feature fusion and severity identification approaches for autonomous underwater vehicles with weak thruster faults are studied in the article. The traditional method uses the modified Bayes algorithm for fault feature extraction from different signals, then the fault features are fused through the Dempster-Shafer evidence theory, and finally, the severities of the faults are obtained by the grey relation analysis method through the fused features. But for weak thruster faults, in the stage of feature extraction, it exists the problem that the ratios of fault eigenvalues to noise eigenvalues of the extracted features are low. In the stages of feature fusion and severity identification, it exists the problem that the errors of the identification results obtained from the fused fault features are not satisfactory. Aiming at the above problems, the smoothed pseudo Wigner-Ville distribution together with the modified Bayes method is presented for feature extraction for weak faults. The feature-level fusion together with the decision-level fusion method is presented for feature fusion and severity identification for weak faults. The experimental prototype pool experiments verify the effectiveness of the approaches presented in this article.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"40 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Output fault-tolerant control of underwater vehicle based on adaptive sliding mode control under multiple constraints 基于多约束条件下自适应滑模控制的水下航行器输出容错控制

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-06-20 DOI: 10.1177/14750902241260104

Dewen Zhu, Zhiyu Zhu

{"title":"Output fault-tolerant control of underwater vehicle based on adaptive sliding mode control under multiple constraints","authors":"Dewen Zhu, Zhiyu Zhu","doi":"10.1177/14750902241260104","DOIUrl":"https://doi.org/10.1177/14750902241260104","url":null,"abstract":"In order to improve the stability of the underwater vehicle, the output fault-tolerant control method of the underwater vehicle based on adaptive sliding mode control is designed on the basis of setting multiple constraints. After the dynamic analysis of the underwater vehicle and its thruster, the output dimension constraint, input amplitude constraint, and state amplitude constraint were set. Based on these three constraints, the recursive cerebellar neural network is used to identify the time-varying and nonlinear unknown faults in the underwater vehicle online, and a deep convolution neural network is used to detect the known faults of the underwater vehicle. The error correction output code is then combined with a support vector machine to classify the detected faults. Finally, the output fault-tolerant control of an underwater vehicle is realized based on adaptive sliding mode control. The experiment shows that after the application of this method, because the recursive cerebellar neural network and the deep convolution neural network can estimate the size of the fault information in time, the sliding mode fault-tolerant controller can readjust the output of the controller according to the result of the fault identification to offset the effect of the fault on the robot, so that the robot can continue to maintain the original stable operation state. Even if the thruster has faults, this method can adjust the output of the thruster in time and reconstruct and recover the total control output, so that the actual output thrust is very close to the expected value, to achieve fault-tolerant control of the underwater vehicle output.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"33 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Investigation of CO2 emissions reduction for a 150 m electric catamaran by CFD analysis of various hull configurations 通过对不同船体结构进行 CFD 分析，研究 150 米电动双体船的二氧化碳减排情况

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-06-20 DOI: 10.1177/14750902241257563

William Kuplis, Jason Ali-Lavroff, Abbas Dashtimanesh, Chun-Yu Lau

{"title":"Investigation of CO2 emissions reduction for a 150 m electric catamaran by CFD analysis of various hull configurations","authors":"William Kuplis, Jason Ali-Lavroff, Abbas Dashtimanesh, Chun-Yu Lau","doi":"10.1177/14750902241257563","DOIUrl":"https://doi.org/10.1177/14750902241257563","url":null,"abstract":"A 150 m electric wave-piercing catamaran concept from Incat Tasmania is analysed using CFD to explore the hydrodynamic impact of operating speed and hull separation on vessel performance and CO2 emissions reduction. Over the investigated speed range of 0.2 < Fr < 0.4, interference factors are evaluated for four demihull separation ratios ( s/ L) and two demihull slenderness ratios ( L/∇1/3). The implications on total life-cycle CO2 emissions are presented as a function of total vessel resistance, and the significance discussed. A separation ratio of s/ L = 0.220 provides the lowest overall resistance, however other configurations provide superior results for specific Froude numbers. The concept of transportation capacity is introduced and used to demonstrate the advantage of slower speeds for the electric powertrain through identification of a critical Froude number Fr = 0.35, above which transportation capacity is reduced as a consequence of the low energy density of Nickel Manganese Cobalt (NMC) batteries. A comparison is also made between the electric and equivalent LNG and diesel powertrains to demonstrate the effect of fuel carbon intensities on standardised vessel CO2 emissions. Through analysis of the transportation capacity and emissions reduction of the electric vessel, a speed of Fr = 0.28 is proposed as a compromise between the two, with further power and emissions reductions achievable near this speed by adopting a narrower hull separation ratio of s/ L = 0.151.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"5 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Corrosion models for steel plates in ship structure based on statistical data 基于统计数据的船舶结构钢板腐蚀模型

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-05-29 DOI: 10.1177/14750902241253319

Majid Rahimie Esfidan, Ahmad Rahbar Ranji

{"title":"Corrosion models for steel plates in ship structure based on statistical data","authors":"Majid Rahimie Esfidan, Ahmad Rahbar Ranji","doi":"10.1177/14750902241253319","DOIUrl":"https://doi.org/10.1177/14750902241253319","url":null,"abstract":"To have a proper maintenance policy for ships and offshore structures, it is necessary to predict corrosion wastage accurately. It is the main aim of the present work to propose corrosion models for plates in ship structures. In total 66,480 data were collected from thickness measurements carried out by different classification societies. The data were sorted out based on the position of the plate, the age of the ship, the country where the ship was built, and the type of ship. Using regression analysis, some models were proposed as a function of the ship’s age and position of plate. Based on this study, the proposed models are checked against existing corrosion models in the literature and it is found that other corrosion models underestimate the corrosion rate in the inner bottom plates, and deck plates. However, they overestimate the amount of corrosion in the side plates of ships. The existing corrosion models are justified for the prediction of corrosion wastage in hatch-coaming plates. For corrosion of outer bottom plates, the existing corrosion models are applicable for ships under 20 years old. They overestimate corrosion wastage for ships older than 20 years. Also, existing corrosion models overestimate corrosion wastage of plates at the side structure of ships above the water line at the early age of ships and underestimate in older ships.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"2 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141192174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ultrasonic non-destructive inspection method for glass fibre reinforcement polymer (GFRP) hull plates considering design and construction characteristics 考虑到设计和施工特点的玻璃纤维增强聚合物（GFRP）船体板超声波无损检测方法

IF 1.8 4区工程技术

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-04-16 DOI: 10.1177/14750902241245539

Zhiqiang Han, Yang Liu, Xiaohong Wu, Daekyun Oh, Jaewon Jang

{"title":"Ultrasonic non-destructive inspection method for glass fibre reinforcement polymer (GFRP) hull plates considering design and construction characteristics","authors":"Zhiqiang Han, Yang Liu, Xiaohong Wu, Daekyun Oh, Jaewon Jang","doi":"10.1177/14750902241245539","DOIUrl":"https://doi.org/10.1177/14750902241245539","url":null,"abstract":"The design and construction characteristics, including glass fibre weight fraction ( Gc), number of single-ply layers, fabric combination, and fabrication quality, of glass fibre reinforcement polymer (GFRP) hull plates affect ultrasound propagation characteristics, such as ultrasonic velocity and attenuation, thereby influencing the accuracy of ultrasonic non-destructive test results. Therefore, this study is to propose a method to decrease the ultrasonic test errors of GFRP hull plate by using statistical method. The GFRP specimens with Gc of approximately 30–50 wt%, thicknesses of approximately 5–20 mm, and different fabric combinations were prepared using the hand lay-up method, considering the general design–construction characteristics. Further, an ultrasonic velocity decision method for ultrasonic inspection was proposed considering the GFRP hull design-construction characteristics, such as Gc and number of single-ply layers of hull plate by multiple linear regression method. The results show that the proposed method can reduce the thickness measurement error from approximately 20%–30% to 1%–2%, compared to an existing ultrasonic inspection method, only considering the Gc effect on ultrasonic velocity, which indicates that the proposed test method is suitable for practical applications.","PeriodicalId":20667,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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