Relevant bibliographies by topics / Ship hull

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Ship hull'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Ship hull"

1

Paik, Jeom Kee. "A Guide for the Ultimate Longitudinal Strength Assessment of Ships." Marine Technology and SNAME News 41, no. 03 (July 1, 2004): 122–39. http://dx.doi.org/10.5957/mt1.2004.41.3.122.

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The aim of the present paper is to establish a practical guide for the ultimate longitudinal strength assessment of ships. The ultimate hull girder strength of a ship hull can be calculated using either the progressive collapse analysis method or closed-form design formulas. In the present paper, both the progressive collapse analysis method and the design formulas are presented. A comparison between the progressive collapse analysis results and the design formula solutions for merchant cargo ship hulls is undertaken. The total design (extreme) bending moment of a ship hull is estimated as the sum of the still-water and wave-induced bending moment components as usual. The safety measure of a ship hull is then defined as a ratio of the ultimate longitudinal strength to the total design bending moment. The developed guidelines are applied to safety measure calculations of merchant ship hulls with respect to hull girder collapse. It is concluded that the guidance and insights developed from the present study will be very useful for the ultimate limit state design of newly built ships as well as the safety measure calculations of existing ship hulls. The essence of the proposed guide shall form ISO code 18072-2: Ships and Marine Technology— Ship Structures—Part 2: Requirements of Their Ultimate Limit State Assessment.
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Zhang, Xiangming, Lingkai Huang, Libao Zhu, Yuhang Tang, and Anwen Wang. "Ultimate Longitudinal Strength of Composite Ship Hulls." Curved and Layered Structures 4, no. 1 (January 26, 2017): 158–66. http://dx.doi.org/10.1515/cls-2017-0012.

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Abstract A simple analytical model to estimate the longitudinal strength of ship hulls in composite materials under buckling, material failure and ultimate collapse is presented in this paper. Ship hulls are regarded as assemblies of stiffened panels which idealized as group of plate-stiffener combinations. Ultimate strain of the plate-stiffener combination is predicted under buckling or material failure with composite beam-column theory. The effects of initial imperfection of ship hull and eccentricity of load are included. Corresponding longitudinal strengths of ship hull are derived in a straightforward method. A longitudinally framed ship hull made of symmetrically stacked unidirectional plies under sagging is analyzed. The results indicate that present analytical results have a good agreement with FEM method. The initial deflection of ship hull and eccentricity of load can dramatically reduce the bending capacity of ship hull. The proposed formulations provide a simple but useful tool for the longitudinal strength estimation in practical design.
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Chen, Nian-Zhong, and C. Guedes Soares. "Ultimate Longitudinal Strength of Ship Hulls of Composite Materials." Journal of Ship Research 52, no. 03 (September 1, 2008): 184–93. http://dx.doi.org/10.5957/jsr.2008.52.3.184.

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A progressive collapse analysis method is proposed to predict the ultimate longitudinal strength of ship hulls of composite materials. The load-average strain curve derived from a progressive failure nonlinear finite element analysis is adopted for representing the behavior of each stiffened composite panel forming a hull cross section. The bending moment of the ship hull under a prescribed curvature is achieved by integrating the reaction force of each stiffened panel over a hull cross section based on the load-average strain curves. The ultimate longitudinal strength of a ship hull is obtained from the moment-curvature relationship of the ship hull, which is established by imposing progressively increasing curvatures of a hull cross section. An all-composite ship is analyzed as an application.
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4

Zakerdoost, Hassan, Hassan Ghassemi, and Mahmoud Ghiasi. "An evolutionary optimization technique applied to resistance reduction of the ship hull form." Journal of Naval Architecture and Marine Engineering 10, no. 1 (June 9, 2013): 1–12. http://dx.doi.org/10.3329/jname.v10i1.12927.

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Hull form optimization from a hydrodynamic performance point of view is an important aspect of ship design. This paper presents a computational method to estimate the ship resistance (viscous & wave) in calm-water. In the optimization process the evolution strategy (ES) technique is linked to the computational method to obtain an optimum hull form by taking into account the displacement as design constraint. For allowing the large variation of hull form during optimization process the hull surface is represented by NURBS. New hull forms are obtained from the well-known S60 hull and the classical Wigley hull taken as initial hulls in the optimization process at Fn=0.316. The optimization variables are a combination of ship hull offsets and main dimensions. The benchmark results for two test cases indicate that the total resistance of optimized hulls is reduced significantly.DOI: http://dx.doi.org/10.3329/jname.v10i1.12927
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Matveev, Konstantin I. "Effect of Drag-Reducing Air Lubrication on Underwater Noise Radiation From Ship Hulls." Journal of Vibration and Acoustics 127, no. 4 (November 22, 2004): 420–22. http://dx.doi.org/10.1115/1.1924646.

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As the speed and power of surface ships rise, the reduction of ship acoustic signature and self-noise is becoming an important task of naval engineering. A significant decrease in underwater noise can be achieved by using gaseous layers on the ship hull. Two mechanisms for sound radiation from low-drag air-lubricated hulls are discussed.
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Yastrebov, Dmitry Pavlovich, Oleg Aleksandrovich Belov, Vladimir Alekseevich Shvetsov, Bogdan Vladimirovich Tarabanov, and Sergey Anatolevich Zaitsev. "Problem of using electrodes made of shipbuilding steel to protect ship hull from corrosion." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2020, no. 2 (May 22, 2020): 15–21. http://dx.doi.org/10.24143/2073-1574-2020-2-15-21.

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The article discusses the problem of corrosion that causes significant damage to the ship structures and mechanisms, reducing their service life. The experience of using different electrodes to control the electrochemical protection systems of steel hulls of auxiliary vessels is presented. The results of corrosion tests of PM-15 ship hull are presented, which included measurements of the hull potential at a given control point, using an electrical measuring device and two control electrodes. As the first electrode used an electric carbon product for electric machines. A ship hull steel plate was used as the second electrode. The investigated vessel stayed at the pier for a long time. Corrosion tests were carried out in the period within 10.10.2019-16.10.2019. The ship hull potential at the control point was controlled using 50 parallel measurements. Parallel measurements were performed with a specified time interval of 5 sec. between them. A qualified operator has been trained to perform corrosion studies. The accuracy of the measurements was determined on the basis of current regulatory documents. The test results show that the reliability of the control of electrochemical protection systems of the hull primarily depends on the type of electrode used. It has been demonstrated that the metrological characteristics of the results of control measurements depend on the period of using a steel plate. The results of scientific research help to select the right elements of the system of monitoring the effectiveness of electrochemical protection of the ships and ship crews.
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Pérez, F. L., J. A. Clemente, J. A. Suárez, and J. M. González. "Parametric Generation, Modeling, and Fairing of Simple Hull Lines With the Use of Nonuniform Rational B-Spline Surfaces." Journal of Ship Research 52, no. 01 (March 1, 2008): 1–15. http://dx.doi.org/10.5957/jsr.2008.52.1.1.

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This paper deals with the use of a simple parametric design method applied to simple hull lines, such as sailing ship hulls and round bilge hulls. The described method allows the generation of hull lines that meet hydrodynamic coefficients imposed by the designer, obtaining more flexibility than with normal affine transformations of a parent hull. First, a wire model of the ship stations is made with the use of explicit curves. The method is completed with an automatic surface modeling of the previ¬ously generated offsets. The construction of spline curves and their application in the definition of ship lines are reviewed. Approximation of spline curves fitting the data on the stations is made, with special emphasis on the choice of parametrization, which is relevant to increasing the accuracy of the splines. B-spline surface modeling of the hull and the fairing process adapted to maintain certain ship characteristics are described. Some examples of the generation, lofting, and fairing process are pre¬sented.
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Pranatal, Erifive, Gatot Basuki, Norita Prasetya, Maria Margareta Zau Beu, and Minto Basuki. "Reparasi dan Perhitungan Tahanan Kapal Nelayan di Daerah Nambangan Kelurahan Kedung Cowek – Surabaya." JAST : Jurnal Aplikasi Sains dan Teknologi 4, no. 1 (June 9, 2020): 1. http://dx.doi.org/10.33366/jast.v4i1.1456.

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Wooden hulls have been damaged and overgrown by fouling have negative impact on the service life and also increase the resistance of ship thereby increasing fuel consumption. Therefore the ship have to repaired regularly. The problem discussed is how to repair wooden ships such as replacing plank, cleaning hull and coating; and hull analysis to determine resistance of ship. Therefore the object of this paper is to repair wooden ships and analysis of the hull. The method used is training that is followed by demonstration and also science and technology simulation that explains the form hull and resistance of the ship with use of software Maxsurf. The result is replacement plank on the keel, and the side; clean the hull, putty and coating. The ship is measured and the main dimension is obtained and then makes line plans and 3D ship models. The calculation of the ship's resistance shows that ship use main engine Honda GX 160 with 5.5 hp will produce 6.325 knots.ABSTRAKKondisi lambung kapal kayu yang rusak dan ditumbuhi biota laut (fouling) berdampak negatif pada umur pakai kapal dan juga menambah tahanan kapal sehingga meningkatkan konsumsi bahan bakar. Oleh karena itu kapal harus diperbaiki secara berkala. Permasalah yang diselesaikan adalah bagaimana reparasi kapal kayu seperti penggantian papan kayu, pembersihan lambung, pengecatan dan juga analisa bentuk lambung kapal kayu untuk mengetahui tahanan kapal kayu. Sehingga tujuan penulisan ini adalah melakukan reparasi kapal kayu dan juga analisa lambung kapal. Sendangkan metode penelitian yang digunakan adalah adalah pelatihan yang diikuti demonstrasi dan juga simulasi ipteks yang menjelaskan bentuk lambung dan tahanan kapal dengan bantuan software Masurf. Kapal yang reparasi dilakukan pergantian papan pada lunas kapal, dan sisi kapal, pembersihan lambung, pendempulan dan pengecatan. Selanjutnya dilakukan pengukuran kapal untuk mendapatkan ukuran utama dan pembuatan gambar rencana garis dan model kapal 3D. Pada perhitungan tahanan kapal dengan menggunakan motor penggerak Honda GX 160 dengan daya 5,5 HP akan menghasilakan kecepatan 6,325 knot.
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Belov, O. A., A. O. Shuvaeva, S. A. Klementyev, and A. V. Fedin. "OPERATIONAL CONTROL OF THE STATE OF ANTI-CORROSION PROTECTIONAS A FACTOR IN THE SAFETY OF TECHNICAL OPERATION OF MARINE VESSELS." Innovatics and Expert Examination, no. 1(29) (July 1, 2020): 152–59. http://dx.doi.org/10.35264/1996-2274-2020-1-152-159.

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The technical operation of modern marine vessels is inevitably associated with the aggressive effects of electrochemical corrosion on hull structures and the ship as a whole. Corrosion processes have a destructive effect on hull elements, welded joints of metal structures, as a result of which there is a violation of water tightness, a decrease in the general and local strength of the hull, other operational characteristics of the vessel, reliability parameters of the hull structures and, as a result, a decrease in the safety of navigation and environmental safety, including at the points of basing ships and adjacent waters. This factor requires the introduction of special methods of corrosion protection, the main of which are the use of coatings and the use of electrochemical protection of ship hulls. Maintaining the integrity of coatings and a given level of hull electrochemical protection during the operation of the vessel involves the implementation of a set of interconnected engineering, technical and organizational measures, the basis of which is the operational control of the state of corrosion protection.
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He, Ngo Van, Keisuke Mizutani, and Yoshiho Ikeda. "REDUCING AIR RESISTANCE ACTING ON A SHIP BY USING INTERACTION EFFECTS BETWEEN THE HULL AND ACCOMMODATION." ASEAN Engineering Journal 7, no. 1 (December 26, 2014): 1–14. http://dx.doi.org/10.11113/aej.v7.15484.

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Nowaday, a study on saving energy as well as reducing resistance acting on a ship is important in maritime transportation. In this study, the authors present a study on reducing air resistance acting on a ship by using interaction effects between the hull and an accommodation. At first, air resistances acting on a hull and an accommodation of the ship are investigated by a commercial Computation Fluid Dynamic (CFD) code. Then, CFD results are compared with those of experimental results to validate the accuracy of the CFD. Secondly, air resistances acting on the ship with an accommodation on its deck are computed to obtain air resistances acting on the whole ships, on the hull and on accommodation. The results demonstrate that the interaction effects between the hull and its accommodation house be also shown how to reduce the total air resistance by using interaction effects between the hull and an accommodation house. The results can be applied in reducing the total resistances acting on a ship.
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Dissertations / Theses on the topic "Ship hull"

1

Voxakis, Petros. "Ship hull resistance calculations using CFD methods." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74895.

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Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 77-78).
In past years, the computational power and run-time required by Computational Fluid Dynamics (CFD) codes restricted their use in ship design space exploration. Increases in computational power available to designers, in addition to more efficient codes, have made CFD a valuable tool for early stage ship design and trade studies. In this work an existing physical model (DTMB #5415, similar to the US Navy DDG-51 combatant) was replicated in STAR-CCM+, initially without appendages, then with the addition of the appendages. Towed resistance was calculated at various speeds. The bare hull model was unconstrained in heave and pitch, thus allowing the simulation to achieve steady dynamic attitude for each speed run. The effect of dynamic attitude on the resistance is considered to be significant and requires accurate prediction. The results were validated by comparison to available data from tow tank tests of the physical model. The results demonstrate the accuracy of the CFD package and the potential for increasing the use of CFD as an effective tool in design space exploration. This will significantly reduce the time and cost of studies that previously depended solely on physical model testing during preliminary ship design efforts.
by Petros Voxakis.
Nav.E.and S.M.
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Xu, Jinsong. "Estimation of wave-induced ship hull bending moment from ship motion measurements." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0029/NQ62460.pdf.

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Fredriksen, Ørjan. "Ice-Induced Loading on Ship Hull During Ramming." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18423.

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As a result of the steadily increasing activities related to marine technology in Arctic regions, Det Norske Veritas has launched an ice load monitoring project to gather knowledge of the ice conditions and prevailing ice-induced actions in the region. The intention of the following thesis is to study different aspects related to design of ice-going vessels, in particular the design scenario where a vessel impacts an ice ridge.The introductory part of the thesis gives an overview of important aspects related to sea ice, including different types of ice features and their physical and mechanical properties. The microstructure of pure ice and formation mechanisms of sea ice are briefly described, and mechanical properties such as elasticity and compressive strength are discussed. Further, a study of existing models for estimation of ice-induced loading on ships is carried out, with focus on local hull plating pressure and global loading due to ice ridge impact.A comparative study of design rules developed by Det Norske Veritas and the International Association of Classification Societies is conducted, and important differences between the two separate rules are identified. The subdivision of class notations is described, and differences in definition of design loads and corresponding requirements are presented. A general conclusion is that the rules developed by Det Norske Veritas are more specific when it comes to governing design scenarios, while rules set forth by the International Association of Classification Societies are more universal in terms of vessel type and prevailing ice conditions.Two separate finite element models based on coastguard vessel KV Svalbard are developed, including a simplified beam element model and a detailed shell element model. Quasi-static and dynamic response analyses for ice ridge impact loading are carried out, where the duration of the load pulse is varied systematically from 0.25~s to 2.0~s. The simplified finite element model is seen to give larger overall maximum response compared with the detailed model, but the difference decreases as the pulse duration is increased.It is observed that quasi-static response is overall larger than dynamic response for both finite element models within the defined pulse duration range. However, the ratio of maximum dynamic to maximum quasi-static response is seen to be positively correlated with the load pulse duration, and a close-to-linear relationship is observed.A study of different parameter variations is performed in order to investigate the importance of various pulse shapes, mass models, damping models and solution methods. Variations are only performed using the simplified beam model. It can be concluded that the shape of the load pulse is of minor importance for dynamic response when the pulse duration is short. However, the pulse shape becomes increasingly important for longer load pulses.An opposite trend is observed when varying the mass model, where a negligible difference in dynamic response is seen for longer load pulses. The difference increases somewhat for shorter load pulses, but can be considered unimportant for dynamic response within the investigated duration interval.It is further observed that the choice of damping model is of significant importance compared with other investigated parameters, and the difference in predicted response remains constant within the investigated pulse duration interval. The choice of solution method is however unimportant for analysis using the simplified beam model.In order to verify the applicability of the finite element models, full scale sea trial measurements of global motions from KV Svalbard are analysed and compared with finite element results. Difference between measured and calculated response during ice ridge impact is seen to be significant, where the calculated maximum response is close to 4 times larger than the maximum measured response. Iterative modifications of the load pulse shape are performed in order to reproduce the measured response history following ice ridge impact, and quite strong agreement is obtained between measured and calculated response.
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Misirlis, Konstantinos. "Progressive collapse analysis of composite ship hull sections." Thesis, University of Newcastle Upon Tyne, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576656.

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This thesis presents the development and validation of a progressive collapse methodology for composite structures based on advanced nonlinear finite element analysis (FEA). The method is applied to parametric studies in order to investigate the influence of boundary conditions, material configurations and geometric imperfections on the response of individual structural members that form a composite ship hull. Effects on the analysis from the type and size of finite elements adopted in the FE discretisation scheme are also considered by conducting mesh refinement studies. In terms of material nonlinear behaviour, failure and progressive collapse of the composite section is performed at ply level. Alternative failure theories are compared for accuracy over a wide range of material, geometric and loading configurations. Good correlation between numerical and experimental results is identified from failure theories that accommodate interaction between failure modes and adopting an instantaneous degradation approach for the damaged properties. Failure of the bond region between plate and stiffener is also being considered in the analysis by adapting cohesive zones which also performs well against a variety of physical tests. Parametric studies are performed on square and long plates in compression for a wide range of slenderness ratios. Effects from the shape, size and location of geometric imperfections are also considered. As a result, a set of data is produced that can be used as an initial basis for design curves. This includes failure initiation and ultimate strength for the range of layup configurations under consideration. These studies are repeated for alternative boundary conditions in order to demonstrate their effect on the panel response. An application example for the ultimate longitudinal strength of a GRP hull girder is provided at the end from the progressive collapse analysis at a global level. This is compared against solutions from simplified methodologies that are based on simple beam theory and demonstrates the necessity for considering interaction effects between local and global panel deformations in the strength assessment of the hull girder.
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Hoque, Md Emdadul. "Dynamic Response of Ship Hull due to Slamming." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25270.

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In this thesis full-fledged Finite Element Analysis is done for Free vibration analysis and Dynamic Forced Response Analysis of ship hull due to the slam induced load in sea way. This topic is of concern for ships and offshore structures in terms of safety, serviceability assessment including habitability. The aim is to investigate the validation available of dynamic response prediction methods. Three-dimensional Finite Element model is developed according to the ship (135m dry cargo vessel) particulars provided by the ISSC committee II.2 Dynamic Response. Preliminary model was developed in SESAM/GeniE and later this model is used for Hydrodynamic Analysis in SESAM/HydroD and Finite Element Analysis in ABAQUS/CAE. Mass data and Bottom pressure time traces were also provided by the committee which was used for further model development and input for slamming load respectively. Committee was also provided the estimated characteristics sea state. Added mass matrices and Total damping matrices has been calculated in HydroD which was introduced in ABAQUS for Wet mode models. Low frequency natural hull girder frequencies with associated vibration modes for Dry-mode and Wet-mode models (Lightship condition, Ballast condition, Fully Loaded condition) were determined. The validity of the frequency analysis results were verified through the further investigations involving study of Classification society and ISO rules and regulations. Implicit dynamic analysis was done for the Acceleration and Strain time traces in the specified location of the ship due to the impulse load. Calculated response data will be compared to the measured data on the actual ship while at sea. The result from free vibration analysis and forced dynamic response analysis were in agreement with the accepted knowledge. A number of approximations made in the phase of model development and calculations of hydrodynamic parameter were done assuming zero forward speed which has influence on the results. In order to realize the true potential value of this work it would be necessary to compare actual ship response data to calculated data and sorting out the possible disagreements. This work is a possible source to demonstrate the adequacy of hull structural analysis tool which can potentially leading to future design improvements.
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Lin, Ying-Tsair. "Ship longitudinal strength modelling." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320513.

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Peng, Hongxuan. "Numerical computation of multi-hull ship resistance and motion." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63482.pdf.

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Vålandsmyr, Anders. "Stress Analysis of Turret Interacting with Ship Hull Structure." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11628.

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The trend in offshore oil and gas industry has been that new oil and gas fields are more remote in terms of water depth and in distance from existing infrastructure. The high price for oil and gas drives the industry to develop fields in harsh environment and record breaking water depths. Fixed offshore structures are not feasible for ultra deep water depths and may also be less profitable or unprofitable for moderate depths. This is due to the high cost of laying export pipelines in remote areas or because marginal fields only requires production facilities for a few years. Floating production storage and offloading systems, FPSOs, has been used by the offshore industry since the late 1970s but the usage has rapidly increased over the last two decades. One of the benefits of using FPSO‘s is that export can be  done by shuttle tankers, thus no pipeline infrastructure is required. The FPSO itself are not depth sensitive and the challenges related to greater water depths are mainly considering the riser and mooring system. The use of FPSO‘s for marginal fields are also beneficial because of short installation time and  mobility. Therefore it can also easily be reused for new fields. The methods for designing the hull of an FPSO has been somewhat mixed between design rules for ships and design rules for offshore structures. Since the ship rules are not based on specific site parameters and the design rules for offshore structures has mainly been focusing on fixed, tension leg systems or semi submersible platforms, neither one of the two methods has addressed the whole aspect of designing an FPSO. It is actually just recently that several of the main class societies and international standards have released new design codes for floating production systems. Based on the requirements in DNV-OS-C102 and the results available from Wamit a worksheet has been made in Mathcad. The worksheet sums the contribution from each panel and gives the resulting bending moment and shear forces as a hydrodynamic transfer function for the wanted section. Further a structural model with the extent of tank 1 and 2 has been made in Ansys. The sea pressures established in the Mathcad spreadsheet (based on Wamit results), are transferred onto the Ansys model. ULS analysis in Ansys of full load and ballast condition has been preformed for a selected ULS design wave.
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Tregde, Vidar. "Aspects of ship design: optimization of aft hull with inverse geometry design." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-134.

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The main contribution of this thesis is on the study of optimization methods in aft hull design. The optimization methods are inverse geometry design methods to find an aft hull with the flow velocities we specify. The analytic foundation for the flow is given by Stratford in [31], and gives a prescribed velocity distribution on the aft body. With the parameter β we have adjusted this flow to have a certain margin to separation along the pressure recovery region.

This principle and optimization method are successfully applied to design of ships with pram-type aft hull. The 2D optimized profiles corresponds to centerline buttock, and 3D hull sections are extended from this centerline buttock with a bilge radius.

Stratfords original pressure distribution for pressure recovery region were meant for Reynolds numbers up to 107. We have extended Stratfords formula to yield for ship full scale Reynolds numbers to 109.

Different optimization methods were programmed and tested. The best routine for our optimization of aft hull with Stratford flow, was when the offset y-value were the optimization parameter to be changed. When we tried to optimize a complete 2D profile with a given pressure distribution, it worked best to use the variables in a B-spline as the optimization parameter.

Extensive windtunnel tests and towing tank tests are carried out. The tests verified the hydrodynamic properties of the hulls.

Towing tests indicates that the optimized hull lines have lower total resistance than conventional ships with the same main dimensions. Both the frictional, viscous pressure resistance and wave making resistance are significantly lower. Further we can increase cargo capacity with the same power consumption, and achieve a more favourable distribution of the displacement in the aft hull.

This study has shown us that the slant angle for the bottom of the aft hull should not excess 15º with horizontal plane due to danger of separation over the bilge, and longitudinal vortices forming.

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Chun, Ho Hwan. "Theoretical and experimental studies on the resistance of SWATH ships." Thesis, University of Glasgow, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237814.

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Books on the topic "Ship hull"

1

Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada, eds. Design of Ship Hull Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3.

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Harries, Stefan. Parametric design and hydrodynamic optimization of ship hull forms. Berlin: Mensch-und-Buch-Verl., 1998.

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Price, Stephen Rodgers. Plastic sheer buckling of ship hull plating induced by grounding. Cambridge, Massachusetts: Massachusetts Institute of Technology, 1992.

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4

Gerritsma, J. Motions, wave loads and added resistance in waves of two Wigley hull forms. Delft, Netherlands: Technische Universiteit Delft, Vakgroep, 1988.

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Orgel, Richard. The Edmund Fitzgerald hull failure: Edmund Fitzgerald crew vindicated. Toledo, OH: CLEO Pub., 2008.

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6

Healey, Anthony J. Sonar signal acquisition and processing for identification and classification of ship hull fouling. Monterey, Calif: Naval Postgraduate School, 1993.

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Canada. Defence Research Establishment Atlantic. Integral Method For the Calculation of Boundary Layer Growth on A Ship Hull. S.l: s.n, 1985.

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Baumann, Gregg W. Linear structural stress analysis of a hull girder penetration and a short longitudinal bulkhead using finite element modeling. Monterey, Calif: Naval Postgraduate School, 1997.

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Symposium on Naval Hydrodynamics (18th 1990 Ann Arbor, Mich.). Eighteenth Symposium on Naval Hydrodynamics: Ship motions, ship hydrodynamics, experimental techniques, free-surface aspects, wave/wake dynamics, propeller/hull/appendage interactions, viscous effects. Washington, D.C: National Academy Press, 1991.

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Chuan ti xing xian duo xue ke she ji you hua: Multidisciplinary design optimization of ship hull form. Beijing Shi: Guo fang gong ye chu ban she, 2010.

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Book chapters on the topic "Ship hull"

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Papanikolaou, Apostolos. "Ship’s Hull Form." In Ship Design, 293–357. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8751-2_3.

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Roh, Myung-Il, and Kyu-Yeul Lee. "Hull Form Design." In Computational Ship Design, 141–80. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4885-2_11.

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Roh, Myung-Il, and Kyu-Yeul Lee. "Hull Structural Design." In Computational Ship Design, 215–64. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4885-2_13.

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Shama, Mohamed. "Hull Girder Loading." In Buckling of Ship Structures, 117–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-17961-7_5.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Hull Structural Vibration." In Design of Ship Hull Structures, 335–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_18.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Hull Structure Arrangement." In Design of Ship Hull Structures, 353–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_19.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Double Hull Structure." In Design of Ship Hull Structures, 475–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_26.

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Shama, Mohamed. "Hull Girder Bending Stresses." In Buckling of Ship Structures, 141–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-17961-7_6.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Transverse Strength of Ship." In Design of Ship Hull Structures, 387–415. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_21.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Progress in Ship Design." In Design of Ship Hull Structures, 97–110. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_5.

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Conference papers on the topic "Ship hull"

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Ortiz, Francisco, Juan A. Pastor, Barbara Alvarez, Andres Iborra, Noelia Ortega, David Rodriguez, and Claudio Conesa. "Robots for hull ship cleaning." In 2007 IEEE International Symposium on Industrial Electronics. IEEE, 2007. http://dx.doi.org/10.1109/isie.2007.4374928.

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Tribou, Melissa E., and Geoffrey Swain. "Brush Development for Ship Hull Grooming." In SNAME 5th World Maritime Technology Conference. SNAME, 2015. http://dx.doi.org/10.5957/wmtc-2015-205.

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Ship hull grooming is proposed as an environmentally friendly method of controlling fouling on ship hulls. It is defined as the frequent and gentle cleaning of a coating when the ship is idle to prevent the Establishment of fouling. Prior research by Tribou and Swain has evaluated the effectiveness of different methods and the frequency of grooming on different types of ship hull coatings. It was found that vertical rotating cup style Brushes provided the best method to maintain the coatings in a smooth and fouling free condition. This study investigated brush design and operational parameters in relationship to normal forces imparted by the brushes to the surface. A brush stiffness factor was developed and the independent variables for brush design non-dimensionalized for the normal force. A load cell was used to measure the forces imparted by different brushes and the models were validated using these non-dimensional terms. The knowledge gained by these studies will be used to optimize brush design for the implementation of grooming.
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Vidic-Perunovic, Jelena. "Towards the Prediction of Hull Springing Response." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20303.

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Research on wave induced vibration in ocean going ships has been undergoing the revival during the recent years. The increased flexibility in hulls owes to increase in ship size, primarily the ship length. Springing vibration is induced by unsteady pressure field on the hull and it decays slowly due to low structural damping and the recursive wave excitation. Due to its large number of cycles springing vibration may represent a fatigue problem in different ship forms — e.g. full form ships in ballast condition, ultra large containerships, fast passenger ships. Springing was a subject to many theoretical and experimental investigations during the last decades. In order to become a part of the hull design practice and to be considered explicitly springing calculation procedure must be well defined with a reasonable CPU time and accuracy. In the present study results from two different strip theories have been compared for an example ship. Further, the hydrodynamic pressure solution obtained by the radiation-diffraction panel method program has been employed by a hydroelastic strip theory in order to obtain the vertical wave excitation force on the hull. The influence of the diffraction wave pressure on springing prediction has been analyzed.
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Sasa, Kenji, and Atilla Incecik. "New Evaluation on Ship Strength From the Viewpoint of Stranded Casualties in Coastal Areas Under Rough Weather." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79048.

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It is important to study the safety of “the refugee of harbour” from the viewpoint of port planning. Recently, accidents of stranded vessels which resulted in breaking of the ship hull become very serious in the port operation and the coastal environment. However, these problems have not even been discussed among the coastal engineering and shipbuilding communities. In this study, we summarize the importance of this point by showing the statistic of casualties. Then, the strength of ship hulls is calculated using the strip theory and the basic dynamics of material, when ships are designed to navigate in the ocean. Since the results of calculations cannot explain the reasons for the incidents which resulted in breaking of the ship hull, the possibility of the high stress levels due to cracks is also considered to explain the reasons for these casulties. The results of the predictions can explain that the breaking of the stranded ship hulls may be caused by the high stresses due to cracks on the ship hull. Therefore, in the future the safety of coastal areas outside harbours should be considered by predicting the motions of anchored ships and the fracture mechanics of the ship hull in detail.
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Yu, Yi-Hsiang, and Spyros A. Kinnas. "Roll Response of Ship-Shaped Hulls in Waves." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80043.

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This paper addresses the hydrodynamic interaction and the response of typical FPSO and LNG hull-forms with an emphasis on roll. In particular, the study focuses on the prediction of the roll response of hulls in free-decay motions and also in regular waves for various wave frequencies and for hulls with or without bilge keels. A 2-D finite volume method-based Navier-Sokes solver (NS2D) is applied to analyze the flow around the hull-sections. The effectiveness of using bilge keels on roll reduction is presented, and the bilge keel loads on the up-wave and down-wave sides of the hull are examined.
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Sun, Jaeouk, Sunguk Kim, Youngdal Choi, and Reko-Antti Suojanen. "A Study on Hull Form Design for Ice Breaking Arctic LNG Carrier." In International conference on Ship & Offshore Technology Ice Class Ships 09. RINA, 2009. http://dx.doi.org/10.3940/rina.icsot.2009.09.

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Molland, A. F., and S. R. Turnock. "The Effect of The Hull On The Manoeuvring Performance of Rudders." In Ship Motions and Manoeuvrability. RINA, 1998. http://dx.doi.org/10.3940/rina.sm.1998.12.

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Juan, Contreras, Cuadrado William, Munoz David, Archbold George, Delgado, Geraldine Delgado, and Diaz Vladimir. "Automatic ship hull inspection using fuzzy logic." In 2012 IEEE Applied Imagery Pattern Recognition Workshop (AIPR 2012). IEEE, 2012. http://dx.doi.org/10.1109/aipr.2012.6528214.

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Nassiraei, Amir Ali Forough, Takashi Sonoda, and Kazuo Ishii. "Development of Ship Hull Cleaning Underwater Robot." In 2012 5th International Conference on Emerging Trends in Engineering and Technology (ICETET). IEEE, 2012. http://dx.doi.org/10.1109/icetet.2012.74.

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Thombre, M. "Ship Hull Form Optimization Using Genetic Algorithms." In International Conference on Computer Applications in Shipbuilding 2013. RINA, 2013. http://dx.doi.org/10.3940/rina.iccas.2013.69.

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Reports on the topic "Ship hull"

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Lin, Cheng-Wen, Scott Percival, and Eugene H. Gotimer. Viscous Drag Calculations for Ship Hull Geometry,. Fort Belvoir, VA: Defense Technical Information Center, December 1995. http://dx.doi.org/10.21236/ada323498.

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Slutsky, Jonathan. Resistance and Component Hull Interactions of a High-Speed Trimaran Sealift Ship. Fort Belvoir, VA: Defense Technical Information Center, November 2008. http://dx.doi.org/10.21236/ada498353.

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Fu, Thomas, Anna Karion, Anne Pence, James Rice, Don Walker, and Toby Ratcliffe. Characterization of the Steady Wave Field of the High Speed Transom Stern Ship - Model 5365 Hull Form. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada441904.

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Lyons, Daniel J., and Christopher J. Chesnakas. Bare Hull Resistance Experiments and LDV Wake Surveys for a Trimaran Concept of a Heavy Air Lift Seabasing Ship (HALSS) Represented by Model 5651. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada473766.

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Latorre, Robert, and Paul Herrington. The National Shipbuilding Research Program. 1997 Ship Production Symposium, Paper Number 18: Development of a Production Optimization Program for Design and Manufacture of Light Weight/High Strength Hull. Fort Belvoir, VA: Defense Technical Information Center, April 1997. http://dx.doi.org/10.21236/ada447091.

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Grenestedt, Joachim L. Vierendeel Type Steel Truss/Composite Skin Hybrid Ship Hulls. Fort Belvoir, VA: Defense Technical Information Center, October 2007. http://dx.doi.org/10.21236/ada476085.

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Carder, Kendall L., and Phillip N. Reinersman. Optical Variability and Bottom Classification in Turbid Waters: HyMOM Predictions of the Light Field in Ports and Beneath Ship Hulls. Fort Belvoir, VA: Defense Technical Information Center, September 2006. http://dx.doi.org/10.21236/ada612265.

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West, Harry, and Mike Gallo. The National Shipbuilding Research Program. 1989 Ship Production Symposium, Paper No. AP: Design Through Manufacture: A Computer Aided Advisor for the Manufacture of Submarine Hulls. Fort Belvoir, VA: Defense Technical Information Center, September 1989. http://dx.doi.org/10.21236/ada453645.

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