Bibliografie tematiche / Mechanic (Ship)

Letteratura scientifica selezionata sul tema "Mechanic (Ship)"

Autore: Grafiati
Pubblicato: 26 luglio 2024
Ultima modifica: 26 luglio 2024

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Articoli di riviste sul tema "Mechanic (Ship)"

1

Kurniawan, Akhmad Reinaldy, Adi Kurniawan, Sardono Sarwito, Ahlur Roi Novanto Gumilang e Firman Budianto. "Power flow analysis of DC distribution system in a ship with non-electric propulsion". International Journal of Electrical and Computer Engineering (IJECE) 13, n. 1 (1 febbraio 2023): 9. http://dx.doi.org/10.11591/ijece.v13i1.pp9-16.

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Abstract (sommario):
<span lang="EN-US">Direct current (DC) shipboard power distribution system offers higher power efficiency and voltage stability compared to the alternating current (AC) systems due to lower impedance. The implementation of DC distribution system in all-electric ship seems to be worthy since the reduction of power loss and voltage drop could overcome the drawback of DC system. However, the effectiveness of DC distribution system in ship with non-electric propulsion has not been investigated yet. Unlike in an all-electric ship, electric power flow in the distribution system of a ship with mechanic propulsion is considerably lower. The study aims to provide numerical analysis of power loss and voltage drop reduction on DC distribution system that applied to a ship with mechanic propulsion. The power flow analysis is performed on a tanker ship. Contrary to the hypothesis, the results show that the DC power distribution increase the power losses about 15% compared to AC system due to the addition of rectifier and inverter. However, the voltage drops are decreased in DC distribution system. Further investigation in the other aspects should be performed before concludes whether DC distribution system is worthy to be used in the aforementioned ship.</span>
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2

Wang, Chuan, Hui Long Ren e Hui Li. "A Finite Element Method to Simulate Ice Based on Multi-Surface Failure Criterion". Applied Mechanics and Materials 623 (agosto 2014): 90–96. http://dx.doi.org/10.4028/www.scientific.net/amm.623.90.

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A finite element method is introduced to simulate ice failure based on multi-surface criterion. The effects of porosity, temperature and strain rates on the ice mechanic property are taken into consideration. The main principle to simulate environment is explained. Through second developed to the finite element software, the process of ship-ice interaction is simulated. And the ship motion, ice force and ice failure mode are predicted by this method. The result is compared with other papers. the numerical simulation phenomenon is nearly same with the actual process. It suggests that simulation is reasonable, and the model has potential value in simulations of assessing ship strength. The fatigue damage is pointed out to be a special problem in ice-going ship design.
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3

Mazur, E., P. Shcherban e V. Mazur. "Research and evaluation of the operating characteristics of used ship engine oil using the process parameter matrix method". FME Transactions 51, n. 4 (2023): 497–503. http://dx.doi.org/10.5937/fme2304497m.

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The marine engine circulating oil change interval suggested by manufacturers is a guideline based on general scale statistics and laboratory testing. At the same time, the actual remaining oil life can significantly correct the time and money spent by the chief mechanic service on system maintenance. In the present work, a method has been developed that makes it possible to increase the service life of mechanisms and the reliability of ship equipment under operating conditions. The effect is achieved by identifying and analyzing the most significant and influential parameters of the lubricant used. An array of physical and chemical data on lubricants, taking into account the equipment's time to failure, is processed by a special computer program for monitoring the state of a marine engine in operating mode. The developed software package allows more accurate and timely maintenance of the SPP (ship power plant).
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4

Elmardi Suleiman, Osama Mohammed, e Surag Mohammed Saeed Ali. "INTRODUCTION AND LITERATURE REVIEW OF CORROSION AND BIOFOULING IN MARINE ENVIRONMENT". International Journal of Engineering Applied Sciences and Technology 7, n. 8 (1 dicembre 2022): 41–61. http://dx.doi.org/10.33564/ijeast.2022.v07i08.005.

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This study aims to increase the power and the performance of marine structures by protecting them from corrosion and biofouling, which cause reduction of the vessels power. There are many factors in marine environment such as salinity, pH, temperature, and velocity, which cause corrosion. There are three main reasons concerning the study of corrosion. These reasons are safety, economics, and conservation. In addition, there exists the aquatic organism bio-film, which covers the vessels hull. This phenomenon called fouling and it results in increasing hydrodynamic drags, lower the maneuverability of the vessels and increase the fuel consumption. All these factors lead to the deficiency of ships performance. There are many methods that can be used to prevent vessels from the results of fouling and corrosion, among these methods coating i.e. using a highly corrosion resistant material on the ship hull and cathodic method i.e. using zinc for electro mechanic interaction could be effective if implemented properly.
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5

Sibryaev, Konstantin Olegovich, Maxim Michailovich Gorbachev e Adel Damirovich Ibadullaev. "DEVELOPING INFORMATION PROCESSING UNIT USED IN SOFTWARE AND HARDWARE COMPLEX MONITORING SHIP SHAFT LINE TORSIONAL VIBRATIONS". Vestnik of Astrakhan State Technical University 2021, n. 1 (31 maggio 2021): 22–28. http://dx.doi.org/10.24143/1812-9498-2021-1-22-28.

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The article considers torsional vibrations in combination with other technical factors, which remain a cause of damages and breakdowns of the ship's propeller shafts, intermediate shafts and crankshafts. Torsional vibrations inevitably occur in the ship plants. It can be explained by the uneven torque of the engine and the torque on the propeller (exposure of the propeller, uneven movement of the water flow, stormy weather, etc.), which leads to alternating twisting of the shaft. To reduce torsional vibrations, dampers are used, which require periodic performance testing by using the torsiography procedure. In contrast to the existing monitoring systems of the technical condition of the damper, it is planned to install an information processing unit for the software and hardware complex for monitoring torsional vibrations of the ship's shaft line and the parameters associated with them (vibration and temperature changes of the flexible elements of the connecting couplings). The unit under development will allow to constantly monitor the level of torsional vibrations and, if they increase, to signal the ship's mechanic to switch to another operational mode of the main engine, which will increase the reliability and automation of the ship power plants, the safety of navigation, and reduce the economic costs of ship operating
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6

Karczewski, Artur, e Janusz Kozak. "Variants method approach to the preliminary ship design". Mechanik 90, n. 12 (11 dicembre 2017): 1196–98. http://dx.doi.org/10.17814/mechanik.2017.12.206.

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Abstract (sommario):
Typical ship designing is an iterative method based on the accumulated experience of already built ships. In the case of a completely new type of ship, without the „dowry of previous experience”, the design consists in developing a series of parallel variant solutions using the optimization. The paper identifies selected designing methods applying the optimizations used in the preliminary ship design. The optimization methods used in the ship design are discussed.
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7

Jokosisworo, Sarjito. "PENGARUH BESAR ARUS LISTRIK DENGAN MENGGUNAKAN ELEKTRODA SMAW TERHADAP KEKUATAN SAMBUNGAN LAS BUTT JOINT PADA PLAT MILD STEEL". Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 6, n. 2 (28 marzo 2012): 118–22. http://dx.doi.org/10.14710/kpl.v6i2.2725.

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Abstract (sommario):
The influence of mechanic disposition, is one of the factor influence ship strength. This influence can be test by mechanical test in welding butt joint. The result test database analysis can be conclude that very helpful to increase safety and quality butt joint. With steel specification C= 0,15%, Si= 0,24%, Mn= 0,88%,P= 0,018%, S= 0,034%. This material give a 90, 110, 125 ampere with SMAW AC electrode diameter 3,2 mm x 350 mm with V root and 600 angle In the fabrication of mild steel products, components or equipment, manufacturers employ welding as the principal joining method. Mild steel are weldable materials, and a welded joint can provide optimum corrosion resistance, strength, and fabrication economy. However, designers should recognize that any metal, including stainless steels, may undergo certain changes during welding. It is necessary, therefore, to exercise a reasonable degree of care during welding to minimize or prevent any deleterious effects that may occur, and to preserve the same degree of corrosion resistance and strength in weld zone that is an intheren part of the base metal
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8

Родионов, А. А. "The science of strength before and after I.G. Bubnov. To the 150th anniversary of the founder of the ship's structural mechanics". MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg> 2, n. 3(61) (28 agosto 2023): 10–18. http://dx.doi.org/10.37220/mit.2023.61.3.022.

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Abstract (sommario):
Рассмотрены истоки строительной механики, которые ведут свое начало с возведения величественных инженерных сооружений древности. Развитие строительного дела в древней Греции стимулировало разработку статики, составляющую основу строительной механики. Богатейший опыт возведения инженерных сооружений Римской империи обобщен в десятитомном трактате Витрувия об архитектуре. Эпоха возрождения сформировала устойчивый интерес к науке о прочности. Начало XVIII ознаменовано поиском путей применения нового математического аппарата интегро-дифференциального исчисления Ньютона-Лейбница в физике и механике. Значительные результаты в этом направлении получены Яковом и Иоганном Бернулли, Эйлером, Лагранжем. Применение железа в создании инженерных сооружений при обустройстве путей сообщения способствовало окончательному формирования науки о прочности, на базе которой трудами И.Г. Бубнова – математика, механика и корабельного инженера создана наука - строительная механика корабля. Фундаментальные основы строительной механики корабля постоянно совершенствовались и совершенствуются последующими поколениями ученых и практиков, но сохраняют в себе главные положения, сформулированные ее основателем. Перспективные направления развития строительной механики определяются широким применением высокоточных математических моделей, применением новых композиционных материалов, аддитивных технологий изготовления деталей и конструкций для создания надежных объектов, с требуемыми характеристиками эффективности. The origins of construction mechanics, which originate from the construction of majestic engineering structures of antiquity, are considered. The development of the construction business in ancient Greece stimulated the development of statics, which forms the basis of construction mechanics. The richest experience in the construction of engineering structures of the Roman Empire is summarized in Vitruvius' ten-volume treatise on architecture. The Renaissance era forms a steady interest in the science of strength. The beginning of the XVIII century was marked by the search for ways to apply the new mathematical apparatus of the Newton-Leibniz integro-differential calculus in physics and mechanics. Significant results in this direction were obtained by Yakov and Johann Bernoulli, Euler, Lagrange. The use of iron in the creation of engineering structures in the arrangement of communication routes contributed to the final formation of the science of strength, on the basis of which the works of I.G. Bubnov, a mathematician, mechanic and ship engineer created the science of ship construction mechanics. The fundamental foundations of the ship's structural mechanics have been constantly improved and are being improved by subsequent generations of scientists and practitioners, but they retain the main provisions formulated by its founder. Promising areas of development of structural mechanics are determined by the widespread use of high-precision mathematical models, the use of new composite materials, additive manufacturing technologies for parts and structures to create reliable objects with the required performance characteristics.
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Kovalchuk, Tetiana. "Legal status of ship mechanics of the merchant navy of the Azov-black sea region of the XIX - early XX centuries". Bulletin of Mariupol State University. Series: History. Political Studies 11, n. 30 (2021): 51–58. http://dx.doi.org/10.34079/2226-2830-2021-11-30-7-51-58.

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Abstract (sommario):
This article reveals the problems of the personnel of the crews of sea-going merchant vessels of the Azov-Black Sea region. The unrestrained development of domestic and foreign trade in the conditions of a shortage of professional personnel of the merchant navy pushed the Russian Empire to the legal regulation of the competencies of ship mechanics in the early XX century. Until 1903, the legal status of mechanics in the Russian merchant navy was uncertain. Ship mechanics in the Trade Charter of 1893 were listed as members of the crew of free hire and were not part of the command staff. This created serious inconveniences both for ship captains, who found it difficult to cooperate with mechanics, and for mechanics who had no legal basis to manage their immediate subordinates (drivers and firemen). In addition, in the Russian Empire at that time there was no clear system of ship mechanics training for both cabotage and long-distance navigation due to the low level of population’s education, and insufficient attention from the state to the problems of the merchant navy. «Regulations about mechanics on ships of the merchant navy», approved in 1903 defined the state benefits to ship mechanics − deprivation from military service and enlistment in the command of the ship, provided an opportunity to obtain the rights of honorary citizen. It defined the requirements for those who aspired to obtain the positions of ship mechanics: reaching the age of majority, passing the tests of the qualification commission and the presence of a practical qualification. The regulation of the legal status of ship mechanics at the legislative level has influenced on the organization of their training in the Russian Empire. In 1901, a mechanical department for the training of ship mechanics was opened at the Odessa School of Merchant Shipping, for the first time in the Russian Empire. There were no educational institutions in which they could receive higher education in the early XX century. The appearance of the «Regulations on Mechanics on Merchant Navy Ships» in 1903 corrected the negative situation caused by the legal uncertainty of the rights and responsibilities of merchant navy mechanics. The provision raised the prestige of ship mechanics, who received officer's rights and, at the same time, increased their salaries.
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10

Zen, Hardi, Indra Ranu Kusuma e Endang Widjiati. "Robust Laboratory Scale Seakeeping Test Wave Measurement Method Use Ultrasonic Sensor". IOP Conference Series: Earth and Environmental Science 1081, n. 1 (1 settembre 2022): 012042. http://dx.doi.org/10.1088/1755-1315/1081/1/012042.

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Abstract (sommario):
Abstract The seakeeping test is one of the tests done in the Indonesia Hydrodynamic Laboratory (IHL) test tank on a model ship or floating unit. In the test tank, a wave can be generated by using electric and mechanic wave flaps that are pre-programmed on a certain condition of the wave, i.e. different frequencies and amplitude. To measure waves, produced by a wave generator, a wave measuring instrument is needed that can measure changes in water level in the test tank. The current wave measuring instrument is in the form of a 600 mm twin wire wave probe. This instrument is can be used to measure waves in the test tank but has limitations because it is only placed in one location without being moved. Another method is developed to be used in making alternative measuring instruments using ultrasonic sensors. In this paper, this alternative wave measuring instrument shows that measuring waves even when moving the measurement point to a new point location or following a towing carriage can be done and gives better measurement results. Based on these results, this new measuring instrument can be used in a more complex configuration test in the tank.
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Più fonti

Tesi sul tema "Mechanic (Ship)"

1

Avgouleas, Kyriakos. "Optimal ship routing". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44861.

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Abstract (sommario):
Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
Includes bibliographical references (p. 114-118).
Fuel savings in ship navigation has always been a popular subject in the maritime industry as well as the world's largest Navies. Oil prices and environmental considerations drive the effort for more fuel-efficient navigation. This thesis addresses the problem of deterministic minimum fuel routing by applying optimal control theory in conjunction with state of the art hydrodynamic and weather forecasting tools. A fictitious trans-Atlantic route is established and the optimal combination of speed and heading is determined, so that fuel consumption is minimized while certain safety constraints are met. The safety constraints are defined as the probabilities of slamming and deck wetness, both of which are not allowed to exceed prescribed limiting values. The problem formulation adopted in the thesis lies in the framework of Dynamic Programming, which is most suitable for computer implementation. The hydrodynamic performance of the ship is computed through the use of SWAN1, an advanced frequency domain CFD code. With the aid of SWAN1, ship motions and resistance can be accurately calculated. The latter includes the estimation of mean added resistance in waves, which has a major effect on the fuel consumption of ships sailing in rough seas. Wave and swell forecasts are provided in a deterministic setting by a third generation numerical wave model, the WAM cycle 4, developed at the European Center for Medium-Range Weather Forecasts (ECMWF). Utilizing the hydrodynamic results and the output of the wave model a computer program is developed in MATLAB®, which employs the Iterative Dynamic Programming algorithm to solve the optimal control problem.
by Kyriakos Avgouleas.
Nav.E.and S.M.
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2

Pêgo, João Pedro Gomes Moreira. "Advanced fluid mechanics studies of ship propulsion systems". [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983754853.

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3

Miroyannis, Aristides. "Estimation of ship construction costs". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36275.

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Abstract (sommario):
Thesis (S.M. in Ocean Systems Management)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
Includes bibliographical references (p. 105-107).
Since the end of the Cold War naval procurement for the US Navy has seen a dramatic decrease. This decrease in defense spending has placed existing programs under more scrutiny than previous years. As a result there is less tolerance on the part of taxpayers and Congress for procurement cost growth. This Thesis attempts to examine the current method that the Navy conducts ship cost estimates and suggests changes in order to improve the confidence level and accuracy of the forecasts. An examination of how industry is conducting cost estimates was used as a comparison to the current Navy practices. Finally using only a weight based approach to ship cost estimating is insufficient. It is necessary to develop and use a model that incorporates other cost driving factors in order to develop estimates of sufficient quality at the preliminary design level.
by Aristides Miroyannis.
S.M.in Ocean Systems Management
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4

Thomas, Paul Francis. "The mechanics of plate cutting with application to ship grounding". Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12839.

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Abstract (sommario):
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1992 and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
Includes bibliographical references (leaves 160-163).
by Paul Francis Thomas.
M.S.
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5

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

Testo completo
Abstract (sommario):
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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6

Sievenpiper, Bartholomew J. (Bartholomew Jay). "Electrical ship demand modeling for future generation warships". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81589.

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Abstract (sommario):
Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 98-99).
The design of future warships will require increased reliance on accurate prediction of electrical demand as the shipboard consumption continues to rise. Current US Navy policy, codified in design standards, dictates methods of calculating the average demand power. Using several modern sources of information for the DDG-51 class ship, this thesis investigates the utility of current analysis techniques and examines possible improvements. This thesis expands upon a basic method of modeling and simulation to develop a design tool that would provide an improved method of predicting ship electrical loads with increased fidelity of the ship's electrical demand. These efforts ultimately allow a better understanding of ship behavior to enable decision making in all stages of Navy ship design.
by Bartholomew J. Sievenpiper.
Nav.E.and S.M.
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7

Katsoufis, George P. (George Paraskevas). "A decision making framework for cruise ship design". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35707.

Testo completo
Abstract (sommario):
Thesis (S.M. in Ocean Systems Management and S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
Includes bibliographical references (p. 91-97).
This thesis develops a new decision making framework for initial cruise ship design. Through review of effectiveness analysis and multi-criteria decision making, a uniform philosophy is created to articulate a framework that would enable a designer to more accurately assess what design alternatives are more important than others and how their changes affect the overall system being designed. Through a brief historical account, top-level Measures of Merit are developed and used with the framework and then applied to a requirements and effectiveness case study on initial concept development of a cruise ship. This is performed using Response Surface Methods to enable the user to visualize the design space as well as interact with it; the results and methods to visualize the design space are discussed. Finally, a Unified Tradeoff Environment is discussed, a framework that pools the aforementioned requirements and effectiveness analysis with design and technology forecasting to enable the user to make better informed requirements derivation and design selection.
by George P. Katsoufis.
S.M.in Ocean Systems Management and S.M.in Naval Architecture and Marine Engineering
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8

Leghorn, Jeremy T. (Jeremy Thomas). "Modeling for ship power system emulation". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50590.

Testo completo
Abstract (sommario):
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.
Includes bibliographical references (p. 68).
With the U.S. Navy's continued focus on Integrated Fight Thru Power (IFTP) there has been an ever increasing effort to ensure an electrical distribution system that maintains maximum capabilities in the event of system faults. This is to ensure that the crew has the ability to complete real time tactical missions in the event of battle damage to any localized portions of the electrical distribution system. Fault isolation is a priority component of the U.S. Navy's Next Generation Integrated Power System (NGIPS) Roadmap, which lays out the framework as well as milestone dates for future development. Non-Intrusive Load Monitoring (NILM), which has been used extensively for condition based maintenance applications, could simultaneously be used to enhance the existing zonal protection system employed with Multi-Function Monitors (MFM). NILM may be able to, inexpensively, use the existing current and voltage sensors available from the MFM hardware to determine electrical loading which could allow for faster fault isolation capability. A test platform with three 5000 watt synchronous generators is being constructed to emulate a U.S. Navy DDG 51 FLT IIA class ship electric plant. This is being accomplished in order to evaluate the feasibility of improving the fault isolation capabilities of the MFM with NILM implementation. The first step in this endeavor will be to electrically relate the test platform to the DDG electric plant. In order to accomplish this step, the fault simulation results from the test platform will be compared to simulated faults using U.S. Navy data from DDG 51 electric plants.
(cont.) This will allow for the fault isolation results from the test platform to be related to the DDG 51 electric plant.
by Jeremy T. Leghorn.
S.M.
Nav.E.
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9

Tober, Hampus. "Evaluation of drag estimation methods for ship hulls". Thesis, KTH, Mekanik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277843.

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Abstract (sommario):
This study aims to evaluate to which degree CFD can complement traditional towing-tank experiments, and to develop a computationally cheap and robust methodology for these type of simulations. Two radically different surface ship hulls were chosen for the trials: a capesize bulk carrier and a fast displacement hull. A bare submarine hull was also used to benchmark the software in the early stages of the study. All simulations were Reynolds–Averaged Navier–Stokes (RANS) simulations using the k-w-SST turbulence model. The chosen software was OpenFOAM 5.x and foam-extend 4.1 coupled with the commercial expansion Naval Hydro Pack, which is supposed to handle high Courant numbers well. Producing a high-quality mesh which is able to capture both the free surface and the boundary layers proved to be of utmost importance and the meshing procedure is thus discussed in detail. A majority of the surface ship simulations suffered from a phenomenon known as numerical ventilation. The effect seemed to be much worse for the fast-displacement hull and the drag estimates for this hull deviated around 16.1% from experimental data. The bulk carrier was less affected and the drag estimates for this hull only deviated around 6.3% from experimental data. In order to reduce the computational cost, all surface ship simulations were run with a maximum Courant number of 25 and some consequences of this are also discussed.
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10

Jahnke, Joshua James. "Hydrostatic and intact stability analysis for a surface ship". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/58868.

Testo completo
Abstract (sommario):
Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 53).
Ship's lines are designed such that they are fair. To the naval architect, fairness means that the lines exhibit a continuous second derivative. This is the definition of a spline. Before the advent of digital computers, naval architects checked every line on a lines plan for fairness by bending a thin stick of wood, called a batten, on the line. If the line followed the natural bend of the batten, the line was fair. This phenomenon follows from the beam equation, which shows that the minimum energy in the beam occurs when the beam has a continuous second derivative of position. Hydrostatics lies at the heart of naval architecture. The hydrostatic properties of a hull are determined by the lines and their interpretation using rules of integration. The resulting analysis is presented in the form of graphs, termed the "curves of form" or "displacement and other curves." An intact stability analysis follows naturally from the hydrostatic analysis. Hydrostatics (determination of KM) coupled with a KG value can be used to predict initial stability. This intact stability analysis evaluates the range of stability at both small and large angles of inclination. The responses of the hull to static and dynamic loading situations can be inferred from the curves of form. Their most basic use is to determine the static waterline in various loading scenarios. A more subtle use is to determine the correct placement of the vertical center of gravity to ensure a sea kindly roll period, stability in beam winds, and stability in high speed turns. Various computational tools can be used to compute the hydrostatic and stability properties of a ship. This thesis explores the results from two computer aided design tools used by the U.S. Navy and commercial industry; Advanced Surface Ship and Submarine Evaluation Tool (ASSET) and Program for Operational Ship Salvage Engineering (POSSE).
by Joshua James Jahnke.
S.M.in Naval Architecture and Marine Engineering
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Libri sul tema "Mechanic (Ship)"

1

Shama, Mohamed. Buckling of Ship Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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2

Neves, Marcelo Almeida Santos. Contemporary Ideas on Ship Stability and Capsizing in Waves. Dordrecht: Springer Science+Business Media B.V., 2011.

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3

Sherstnev, Nikolay. Maintenance and repair of ship boilers. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1225048.

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Abstract (sommario):
The textbook shows the features of the layout and designs of ship auxiliary, recycling and combined boilers that affect their working conditions and methods of maintenance and repair. Recommendations for external inspection of boilers, control and maintenance in action are given. With examples from ship practice, the main methods of cleaning, defecation and repair of heating surfaces and other parts of various types of boilers are considered. It is intended for students of higher educational institutions studying in the specialty "Operation of marine power plants" and university teachers. It can also be useful for ship mechanics.
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4

Danielson, D. A. Stresses in ship plating. Monterey, Calif: Naval Postgraduate School, 1994.

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5

R, Turnock Stephen, e Hudson Dominic A, a cura di. Ship resistance and propulsion: Practical estimation of ship propulsive power. New York: Cambridge University Press, 2011.

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6

Timman, R. Water waves and ship hydrodynamics: An introduction. Dordrecht: Springer Netherlands, 1985.

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7

Magee, Allan R. Large-amplitude ship motions in the time domain. Ann Arbor: Dept. of Naval Architecture and Marine Engineering, College of Engineering, University of Michigan, 1991.

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8

Sherstnev, Nikolay. Maintenance and repair of marine diesel engines. In 4 volumes. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1853496.

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Abstract (sommario):
The third volume of the textbook shows the design features of the main components and parts of drives, gas distribution mechanisms and fuel equipment that affect their working conditions and methods of maintenance and repair. Recommendations on the frequency of regulated work and possible malfunctions are given. With examples from ship practice, the methods of disassembly, assembly, defection and repair of the main components and parts of drives, gas distribution mechanisms and fuel equipment are considered. It is intended for students of higher educational institutions studying in the specialty "Operation of marine power plants", and university teachers. It may be useful for ship mechanics.
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Sherstnev, Nikolay. Maintenance and repair of marine diesel engines. In 4 volumes. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1851519.

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Abstract (sommario):
The second volume of the textbook shows the design features of the main components and parts of the movement groups that affect their working conditions and methods of maintenance and repair. Recommendations on the frequency of regulated work and possible malfunctions are given. With examples from ship practice, the methods of disassembly-assembly, defection and repair of the main components and parts of the movement groups are considered. The previous and subsequent volumes show the design features, provide recommendations on the frequency of regulated work and maintenance and repair of other components and parts of marine diesel engines. It is intended for students of higher educational institutions in the specialty "Operation of marine power plants" and university teachers. It may be useful for ship mechanics.
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10

North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development., a cura di. Technical evaluation report on Flight Mechanics Panel symposium on aircraft ship operations. Neuilly sur Seine, France: AGARD, 1992.

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Capitoli di libri sul tema "Mechanic (Ship)"

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Chen, Lin, Yaan Hu, Zhonghua Li e Chao Guo. "Study on the Mechanism of Water Loss and Capsizing of Multi - point Suspension Ship Lift". In Lecture Notes in Civil Engineering, 668–79. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_58.

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AbstractThe stability of ship lift chamber operation has always been the key factor restricting the development of ship lift, which has not been well solved for a long time. With the development of upsizing of ships, the super-huge fully balanced ship lift with hoisting steel wire rope over 10000–15000 t is the development trend in the future. The mechanism of water loss and capsizing of multi-point ship lift is the most key scientific problem, and the most core technical problem is the layout and operation control of ship lift system. A generalized physical model of ship lift with the model scale of 1:33 was established to study the influence of multiple factors on water loss stability of ship chamber, such as gravity counterweight/torque counterweight ratio, water leakage flow, the position of suspension points among the chamber, quantity of the suspension points, and so on. Secondly, the structural dynamics equations of hoisting system is deduced in detail, considering the water fluctuation in the process of water loss caused by longitudinal capsizing moment influence on balance system, and research on the transient dynamic characteristics of hoisting system of the filtration process, determine the ship chamber conditions of stability for the trim through the Lyapunov stability criterion. The optimization calculation model of ship lift mechanical suspension system layout under the action of multiple constraints was established, and the effective measures will be given to improve the pitch stability. The results can provide technical guidance for the upsizing of ship lifters.
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Luan, Chen, Pengyu Lou, Hongfu Wang e Qi Wan. "Ultimate Strength Test and Numerical Simulation Analysis of Typical Cabin Made of a Novel Steel". In Lecture Notes in Mechanical Engineering, 901–12. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1876-4_71.

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AbstractA novel steel was proposed to apply to a ship, thereby enabling ships to safely complete their missions. But it is different in the ultimate bearing capacity between the novel material and traditional low-alloy high-carbon steels. There is little research on it. In this paper, the ultimate strength and the destruction mode of the typical cabin made of the novel steel under the hazardous condition are successfully obtained through a four-point bending test. Numerical simulation of the typical cabin at its limit state is verified by the test. Based on the numerical simulation method, theoretical initial deformation and ideal constitutive relation are introduced, which contributes to more conservative prediction for the ultimate strength of the ship made of the novel steel. This paper has guiding significance for subsequent tests and provides technical support for the structure design of the ship made of the novel steel.
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3

Xue, Shu, Yaan Hu, Zhonghua Li e Ying Jin. "Mechanism and Variation Characteristics of Longitudinal Tilt of Ship Chamber of Hydro-Floating Ship Lift (HFSL)". In Lecture Notes in Civil Engineering, 506–15. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_44.

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AbstractThe mounting clearance and deformation of the mechanical synchronization system of the HFSL directly affects the attitude of ship chamber, especially the longitudinal tilt of the ship chamber. In this paper, a generalized model is established to derive the analytical solution of the longitudinal tilt of the ship chamber according to the kinetic equations and differential equation theory of the rigid body with fixed axis rotation, and to reveal the mechanism of the longitudinal tilt of the ship chamber. According to the moment balance equation, the design conditions of the synchronous shaft rigidity of the HFSL are obtained. In addition, a mathematical model is established to simulate the change process of the longitudinal tilt of the ship chamber and analyze its variation characteristics.
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4

Sparenberg, J. A. "The Ship Screw". In Fluid Mechanics and Its Applications, 138–63. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-1812-7_3.

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5

Caridis, Piero. "Engineering Mechanics and Ship Structures". In Local Strength of Ship Structures, 37–67. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003442431-3.

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6

White, Gregory J., Bilal M. Ayyub, E. Nikolaidis e Owen F. Hughes. "Applications in Ship Structures". In Probabilistic Structural Mechanics Handbook, 575–607. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1771-9_24.

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7

Levadou, Marc, e Riaan van’t Veer. "Parametric Roll and Ship Design". In Fluid Mechanics and Its Applications, 307–30. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1482-3_17.

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8

Romano, Antonio, e Addolorata Marasco. "Fluid Dynamics and Ship Motion". In Continuum Mechanics using Mathematica®, 429–61. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1604-7_13.

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9

Wang, Q. X. "Fully Nonlinear Ship- Wave Computations using Unstructured Mesh". In Computational Mechanics, 333. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75999-7_133.

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10

Olsen, Alexander Arnfinn. "Mechanical measuring tools and gauges". In Introduction to Ship Engine Room Systems, 131–37. London: Routledge, 2023. http://dx.doi.org/10.1201/9781003321095-11.

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Atti di convegni sul tema "Mechanic (Ship)"

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Lili Wang, Liming Yang, Guoyu Chen e Zonglin Lu. "Impact force analysis for ship-bridge collisions". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988363.

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2

Liu Aili, Ma Hongxu e Dai Hongde. "Estimation method for ship deformation under wave loads". In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5535384.

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3

Ming Chen, Mingdong Chen, Sichen Tong e Shan Lin. "Real-time simulation platform for inland ship maneuvering". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5987470.

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4

Guo, Xin, e Bin Yu. "The forecast of ship speedability based on model test". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5987786.

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5

Duan, Y. F., K. He e K. Q. Fan. "Real-time alarming of ship-collision accidents for bridges". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988584.

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6

Jianxing Yu, Zhenping Cui e Baoyong Zhou. "Research of ship structural system reliability considering fatigue-strength coupling". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988590.

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7

Sun, Qianyang, Li Zhou, Shifeng Ding, Renwei Liu, Aimin Wang e Jiaming Chen. "Ice Resistance Prediction Using Explainable Deep Learning Method". In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-102855.

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Abstract Accurate prediction of ice resistance plays an important role in ensuring the safety of ship navigation when sailing in ice regions. In recent years, machine learning has been widely applied in the field of ships, among which deep learning is a common method. This study combines the scientific problems of ice resistance for ice-ship design closely, focusing on the design of a deep learning network for predicting the resistance of ice-sailing ships, proposes a Graph Neural Network method to predict ship resistance in ice area based on different data preprocessing methods. The predicted response and real response of the network, the feature weight relationship of the network and the prediction error are shown in the form of a graph. This study refers to the traditional semi-empirical formula, selects appropriate input features (ship design parameters and ice mechanic properties). The neural network is trained through the ship model test data. Different data preprocessing methods are selected to analyze the error of network prediction results, and the generalization ability and fitting effect of the network are evaluated. This work will provide reference for ice-sailing ship.
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Daoqi Xing, Liangxin Zhang e Shiyun Zhang. "Intelligent sliding-mode control based on cloud model for ship steering". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5986934.

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9

Sulligoi, G., D. Bosich, T. Mazzuca e L. Piva. "The FREMM simulator: A new software tool to study electro-mechanic dynamics of the shipboard integrated power system". In 2012 Electrical Systems for Aircraft, Railway and Ship Propulsion (ESARS). IEEE, 2012. http://dx.doi.org/10.1109/esars.2012.6387450.

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Guojie Li, Shaohui Su, Guojin Chen e Lei Xu. "Research on process planning and progress control for large-scale ship building". In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5988247.

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Rapporti di organizzazioni sul tema "Mechanic (Ship)"

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Phillips, N. M. Process Waste Assessment, Mechanics Shop. Office of Scientific and Technical Information (OSTI), maggio 1993. http://dx.doi.org/10.2172/10163071.

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2

Auto mechanic dies from explosion while welding a barrel in his shop. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, agosto 2004. http://dx.doi.org/10.26616/nioshsface03ia045.

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