Relevant bibliographies by topics / Ship and Platform Structures

Academic literature on the topic 'Ship and Platform Structures'

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Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Ship and Platform Structures"

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Lu, Yun, Jinbo Wu, Weijia Li, and Yaozhong Wu. "A New Six-DoF Parallel Mechanism for Captive Model Test." Polish Maritime Research 27, no. 3 (September 1, 2020): 4–15. http://dx.doi.org/10.2478/pomr-2020-0041.

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AbstractIn order to obtain the hydrodynamic coefficients that can save cost and meet the accuracy requirements, a new hydrodynamic test platform based on a 6DoF (six degrees of freedom) parallel mechanism is proposed in this paper. The test platform can drive the ship to move in six degrees of freedom. By using this experimental platform, the corresponding hydrodynamic coefficients can be measured. Firstly, the structure of the new device is introduced. The working principle of the model is deduced based on the mathematical model. Then the hydrodynamic coefficients of a test ship model of a KELC tank ship with a scale of 1:150 are measured and 8 typical hydrodynamic coefficients are obtained. Finally, the measured data are compared with the value of a real ship. The deviation is less than 10% which meets the technical requirements of the practical project. The efficiency of measuring the hydrodynamic coefficients of physical models of ships and offshore structures is improved by the device. The method of measuring the hydrodynamic coefficients by using the proposed platform provides a certain reference for predicting the hydrodynamic performance of ships and offshore structures.
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Liu, Ming. "Research on Motion Analysis and Simulation Technology of Double Ship Floating Installation of Large Structures." Journal of Physics: Conference Series 2417, no. 1 (December 1, 2022): 012006. http://dx.doi.org/10.1088/1742-6596/2417/1/012006.

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The offshore platform is developing towards the trend of large-scale, complex and centralized. Compared with the single-ship floating installation, the double-ship floating installation can be applied to the installation of more complex and diversified offshore platforms and can improve the safety of installation. It is the development direction of large-scale offshore platform installation technology. In this paper, the motion analysis and simulation technology of double ship floating installation are deeply studied. Through momentum analysis, load model, and motion model establishment, the kinematics simulation is carried out under the South China Sea working condition, which provides basic kinematics data for double ship floating installation.
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Goldan, Michael, and Robert J. G. A. Kroon. "As-Built Product Modeling and Reverse Engineering in Shipbuilding Through Combined Digital Photogrammetry and CAD/CAM Technology." Journal of Ship Production 19, no. 02 (May 1, 2003): 98–104. http://dx.doi.org/10.5957/jsp.2003.19.2.98.

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Ship repair, as a technological "lesser brother" of shipbuilding, still contains major elements of manual labor. In the past years, ship repair and the conversion of ships and offshore structures came to rely increasingly on modern computer-aided design and manufacturing (CAD and CAM) information systems for speedy generation of the required engineering information. An often-encountered problem is the lack of product information in electronic form or in any other form. Such information is needed for engineering of new parts for damaged or converted ships and platforms. In such cases one needs to build the virtual product model from the existing as-built object up to an engineering-detail level; hence, the terms "as-built modeling" and "reverse engineering." The paper presents the results of a multiyear project with the code name AMORES, which focuses on improving lead time and economic efficiency in ship and offshore platform repair and conversion in the Netherlands. Existing and newly developed photogrammetric measuring techniques were used to generate as-built models of double curved three-dimensional surfaces of ships and platforms. These were fed into standard CAD/CAM systems to engineer and manufacture new ship hull or platform parts to replace damaged areas. The main advantages of the new method are savings in lead time (measurements, engineering) and the replacing of costly manual labor by modern digital photogrammetry. The paper will focus on the new developments, the experienced difficulties, and the advantages of this new technique in ship repair.
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Zhang, Jing, Qi Wang, and Fenzhen Su. "Automatic Extraction of Offshore Platforms in Single SAR Images Based on a Dual-Step-Modified Model." Sensors 19, no. 2 (January 9, 2019): 231. http://dx.doi.org/10.3390/s19020231.

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The quantity and location of offshore platforms are of great significance for marine oil spill monitoring and offshore oil-gas development. In the past, multiphase medium- and low-resolution optical or radar images have been used to remove the interference of ship targets based on the static position of a platform to extract the offshore platform, resulting in large demands and high image data costs. According to the difference in shape between offshore platforms (not elongated) and ships (elongated shapes) in SAR (synthetic aperture radar) images, this paper proposes an automatic extraction method for offshore platforms in single SAR images based on a dual-step-modified model. First, the two-parameter CFAR (constant false alarm rate) algorithm was used to detect the possible offshore platform targets; then, the Hough transform was introduced to detect and eliminate ship targets with linear structures. Finally, the final offshore platform was obtained. Experiments were carried out in four study areas in the Beibu Gulf basin and the Pearl River estuary basin in the northern South China Sea. The results show that the method has a good extraction effect in the above research area, and the extraction accuracy rate of offshore platforms is 86.75%. A single SAR image can obtain satisfactory extraction results, which greatly saves on image data cost.
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Lim, Jae-Jun, Dae-Won Kim, Woon-Hee Hong, Min Kim, Dong-Hoon Lee, Sun-Young Kim, and Jae-Hoon Jeong. "Application of Convolutional Neural Network (CNN) to Recognize Ship Structures." Sensors 22, no. 10 (May 18, 2022): 3824. http://dx.doi.org/10.3390/s22103824.

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The purpose of this paper is to study the recognition of ships and their structures to improve the safety of drone operations engaged in shore-to-ship drone delivery service. This study has developed a system that can distinguish between ships and their structures by using a convolutional neural network (CNN). First, the dataset of the Marine Traffic Management Net is described and CNN’s object sensing based on the Detectron2 platform is discussed. There will also be a description of the experiment and performance. In addition, this study has been conducted based on actual drone delivery operations—the first air delivery service by drones in Korea.
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Dong, G. H., L. Sun, Z. Zong, H. W. An, and Y. X. Wang. "Numerical Analysis of Ship-Generated Waves Action on a Vertical Cylinder." Journal of Ship Research 53, no. 02 (June 1, 2009): 93–105. http://dx.doi.org/10.5957/jsr.2009.53.2.93.

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In this paper, the action of ship-generated waves on a nearby vertical cylinder is considered in pure theory. Intensive demands of modern sea transportation result in larger and larger ships. These ships generate high waves as they move in calm water. The ship-generated waves can travel long distances without much attenuation. They are so strong that they might cause damage to nearby marine structures (e.g., platforms, river banks, breakwaters, etc.). Therefore, it is necessary to evaluate the forces of ship-generated waves acting on nearby marine structures. The problem turns out to be composed of two problems: evaluation of waves generated by a moving ship (ship-wave problem) and evaluation of the action of ship waves on a cylinder (wave-action problem). Here the wave-action problem is computed in detail with a boundary element method in time domain. And the ship-wave problem is evaluated in the well-known Michell thin-ship theory. Thus, the problem posed in this paper is finally solved using numerical methods by combining the ship-wave and wave-action problems. The numerical analyses of the result are: The resultant forces and moments acting on the cylinder are surprisingly large, characterized by being highly oscillatory. The periods of the oscillations are proportional to ship speed. The actions of ship-generated waves on nearby structures are not negligible. This is a new factor necessary to be considered for design of both marine structures and ships. Meanwhile, the potential fatigue damage resulting from oscillations of the forces and moments should be considered, too.
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Lin, Hong, Chang Han, Lei Yang, Hassan Karampour, Haochen Luan, Pingping Han, Hao Xu, and Shuo Zhang. "Dynamic Performance and Crashworthiness Assessment of Honeycomb Reinforced Tubular Pipe in the Jacket Platform under Ship Collision." Journal of Marine Science and Engineering 10, no. 9 (August 26, 2022): 1194. http://dx.doi.org/10.3390/jmse10091194.

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The collision between the pipe legs of jacket platforms and bypassing ships is of great concern for the safety assessment of platforms. Honeycomb structures have been widely used owing to their unique deformation and mechanical properties under dynamic impact loads. In this paper, two typical honeycomb structures, namely hexagonal honeycomb and arrow honeycomb, were constructed for the impact protection of inclined pipe legs in jacket platforms, and the present study aimed to assess the dynamical performance and crushing resistance of the designed honeycomb reinforced structure under ship collision by using the numerical simulation software ANSYS/LS-DYNA. The dynamical performance of the honeycomb reinforced pipe leg was investigated considering various influential parameters, including the impact velocity and impact direction. The crashworthiness of the two types of honeycomb was evaluated and compared by different criteria, namely the maximum impact depth (δmax), specific energy absorption (SEA) and the proposed index offset sliding (OS). The results demonstrated that both the hexagonal honeycomb structure and the arrow honeycomb structure can reduce the damage of inclined pipe legs caused by ship collision, while the hexagonal honeycomb can provide the better anti-collision capacity, which can well reduce the offset sliding and better protect the pipe leg from ship collision.
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Wu, Gongxing, Xiaolong Zhao, Yushan Sun, and Linling Wang. "Cooperative Maneuvering Mathematical Modeling for Multi-Tugs Towing a Ship in the Port Environment." Journal of Marine Science and Engineering 9, no. 4 (April 4, 2021): 384. http://dx.doi.org/10.3390/jmse9040384.

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The towing operation of multi-tug-assisted ship navigation mainly relies on the experience of the captain, and there is no set of effective operation methods. Therefore, it is difficult to achieve accurate assisted navigation when multiple tugboats work in coordination. The calculation method of maneuverability of the towing system with multi-tug-assisted navigation is proposed in this paper. In view of the complexity of multi-tug-assisted large ship maneuvering, this article focuses on solving the problems of force analysis and maneuvering modeling between the multi-tug and ship systems. Firstly, a maneuvering mathematic model for towing ships is established, and the hydrodynamic force of the hull, rope force of the tugs, and force of wind interference are analyzed. The thrust and moment of the ducted azimuthal propeller are calculated, and the mathematical model of the tug’s cable tension is discussed. Then, the fourth-order Runge–Kutta method is used to solve the differential equations of the maneuvering motion of the ships and each tug. Based on the ship-towing process by multiple tugs, a multi-tug-assisted ship towing simulation platform was built by using the Visual Studio development tool. Finally, on the simulation platform, multi-tug longitudinal-towing-simulation experiments at different speeds were carried out, and the simulation of turning towing maneuvers under the influence of wind was done. The simulation results showed that as the towing speed increases, the initial towing speed fluctuates greatly. There is a significant drift effect on the ships by the wind force. And the wind will cause a fluctuation in the tug’s rope force. The simulation of the multi-tugs towing a ship entering the port was carried out in the port environment. The results showed that the multi-tug towing system and simulation platform may be used for the safety training of the tug’s crew.
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Grewal, Gage S., and Marcus M. K. Lee. "Strength of Minimum Structure Platforms Under Ship Impact." Journal of Offshore Mechanics and Arctic Engineering 126, no. 4 (November 1, 2004): 368–75. http://dx.doi.org/10.1115/1.1839883.

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This paper presents the findings of a numerical investigation into the strength of minimum structure platforms subject to a ship impact. The study has identified important design issues that should be addressed in order to improve the survivability and continued serviceability of minimum structures after a ship impact. It was found that, due to a lack of research effort, design guidelines governing ship impact on minimum structures are lacking in comparison with conventional jacket platforms. In particular, requirements governing the minimum amount of plastic energy absorption in minimum structures are not clearly defined. Ship impact analyses were therefore carried out in order to compare their structural integrity with that for a jacket under ship collision conditions and to evaluate the effects on their ultimate strength. The study not only established any degradation of system strength, but has also determined the amount of plastic energy absorption under various impact scenarios.
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Jones, J., and R. Fraser. "Ship impact on concrete offshore platform legs." Proceedings of the Institution of Civil Engineers - Structures and Buildings 162, no. 1 (February 2009): 21–25. http://dx.doi.org/10.1680/stbu.2009.162.1.21.

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Dissertations / Theses on the topic "Ship and Platform Structures"

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Largiadèr, Caspar Andri 1965. "Modular platform based surface ship design." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/91331.

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Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2001.
Includes bibliographical references (leaves 97-99).
by Caspar Andri Largiadèr.
S.M.in Naval Architecture and Marine Engineering
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Cannon, Stuart Martin. "Materials selection for ship structures." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294827.

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Yu, Lei. "Fatigue reliability of ship structures." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/2259/.

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Today we are sitting on a huge wealth of structural reliability theory but its application in ship design and construction is far behind. Researchers and practitioners face a daunting task of dove-tailing the theoretical achievements into the established processes in the industry. The research is aimed to create a computational framework to facilitate fatigue reliability of ship structures. Modeling, transformation and optimization, the three key elements underlying the success of computational mechanics are adopted as the basic methodology through the research. The whole work is presented in a way that is most suitable for software development. The foundation of the framework is constituted of reliability methods at component level. Looking at the second-moment reliability theory from a minimum distance point of view the author derives a generic set of formulations that incorporate all major first and second order reliability methods (FORM, SORM). Practical ways to treat correlation and non- Gaussian variables are discussed in detail. Monte Carlo simulation (MCS) also accounts for significant part of the research with emphasis on variance reduction techniques in a proposed Markov chain kernel method. Existing response surface methods (RSM) are reviewed and improved with much weight given to sampling techniques and determination of the quadratic form. Time-variant problem is touched upon and methods to convert it to nested reliability problems are discussed. In the upper layer of the framework common fatigue damage models are compared. Random process simulation and rain-flow counting are used to study effect of wide-banded non-Gaussian process. At the center of this layer is spectral fatigue analysis based on SN curve and first-principle stress and hydrodynamic analysis. Pseudo-excitation is introduced to get linear equivalent stress RAO in the non-linear ship-wave system. Finally response surface method is applied to this model to calculate probability of failure and design sensitivity in the case studies of a double hull oil tanker and a bulk carrier.
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Keller, Joe, James Ivey, Antonios Dalakos, Orhan Okan, Ryan Kuchler, Rabon Cooke, Brad Stallings, et al. ""SEA ARCHER" Distributed Aviation Platform." Thesis, Monterey, California. Naval Postgraduate School, 2001. http://hdl.handle.net/10945/7277.

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Includes supplemental material.
This report outlines the results of a two quarter Total Ship Systems Engineering (TSSE) Capstone design project undertaken by the students at the Naval Postgraduate School. The project was under the direction of Professors C.N. Calvano and R.Harney.
Currently, no system exists that provides a sea-based distributed aviation platform capability. The emergence of Unmanned Air Vehicles (UAVs) / Unmanned Combat Air Vehicles (UCAVs), the continued U.S. Navy focus on the littorals, the desire for force distribution, the need for operational cost reductions, and the advent of Network Centric Warfare (NCW) all continue to support the requirement to re-evaluate how littoral operations will be conducted in the future. Given this background, a bottom-up design of a ship supporting a primarily UAV/UCAV air wing in a low to medium threat environment is of significant interest. SEA ARCHER meets this interest. This report outlines a design that meets the future needs for distributed aviation with a high-speed, highly automated platform. Large gains in reduced manning through automated systems for both operation and damage control helpmeet the demanding needs for the future of the Navy at reduced operational costs. The report will outline both the Mission Needs Statement (MNS) and Operational Requirements Document (ORD) for the ship that was developed. The analysis of alternatives that was conducted to determine relative size requirements for the ship in presented in the next section. The concept design that resulted as a result of the Total Ship Systems Engineeing process in then presented. Finally, a detailed look at the analysis and trade studies that were conducted in presented in order to show the more detailed analysis that was conducted in designing the ship.
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Lin, Tian Ran. "Vibration of finite coupled structures, with applications to ship structures." University of Western Australia. School of Mechanical Engineering, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0093.

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[Truncated abstract] Shipbuilding is fast becoming a priority industry in Australia. With increasing demands to build fast vessels of lighter weight, shipbuilders are more concerned with noise and vibration problems in ships than ever. The objective of this thesis is to study the vibration response of coupled structures, in the hope that the study may shed some light in understanding the general features of ship vibration. An important feature characterizing the vibration in complex structures is the input mobility, as it describes the capacity of structures in accepting vibration energy from sources. The input mobilities of finite ribbed plate and plate/plate coupled structures are investigated analytically and experimentally in this study. It is shown that the input mobility of a finite ribbed plate is bounded by the input mobilities of the uncoupled plate and beam(s) that form the ribbed plate and is dependent upon the distance between the source location and the stiffened beam(s). Off-neutral axis loading on the beam (point force applied on the beam but away from the beam’s neutral axis) affects the input power, kinetic energy distribution in the component plates of the ribbed plate and energy flow into the plates from the beam under direct excitation ... solutions were then used to examine the validity of statistical energy analysis (SEA) in the prediction of vibration response of an L-shaped plate due to deterministic force excitations. It was found that SEA can be utilized to predict the frequency averaged vibration response and energy flow of L-shaped plates under deterministic force (moment) excitations providing that the source location is more than a quarter of wavelength away from the plate edges. Furthermore, a simple experimental method was developed in this study to evaluate the frequency dependent stiffness and damping of rubber mounts by impact test. Finally, analytical methods developed in this study were applied in the prediction of vibration response of a ship structure. It was found that input mobilities of ship hull structures due to machinery excitations are governed by the stiffness of the supporting structure to which the engine is mounted. Their frequency averaged values can be estimated from those of the mounting structure of finite or infinite extents. It was also shown that wave propagation in ship hull structures at low frequencies could be attenuated by irregularities imposed to the periodic locations of the ship frames. The vibration at higher frequencies could be controlled by modifications of the supporting structure.
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Lin, Tian Ran. "Vibration of finite coupled structures, with applications to ship structures /." Connect to this title, 2005. http://theses.library.uwa.edu.au/adt-WU2006.0093.

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Beson, Simon Derek. "Progressive collapse assessment of lightweight ship structures." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/1445.

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This thesis investigates the progressive collapse behaviour of lightweight ship hull girders including the effects of compartment level buckling modes. An extension to the progressive collapse methodology is proposed, which has capabilities to predict the compartment strength of a lightweight aluminium midship section. Nonlinear finite element analysis is used to validate both the progressive collapse methodology and the analytical approach proposed for determining the buckling capacity of orthogonally stiffened substructures within the hill girder compartment. The research has been undertaken due to the continued growth in the size of large lightweight craft in both commercial and naval vessels, combined with increasing operability requirements for these vessels. The development of large and lightweight marine structures, predominantly built from aluminium alloy, has raised important issues regarding the response of the hull girder under primary hull girder bending.
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Underwood, J. "Strength assessment of damaged steel ship structures." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/355704/.

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In 2012 106 vessels over 100 gross tonnes were lost. During the damage incidents many of these vessels required assistance from shore based emergency response services with regards to their damaged strength to stabilise the situation, preserve life, prevent environmental disaster and limit financial costs to owners and insurers. The research work presented in this Engineering Doctorate Thesis surrounds the strength assessment of damaged steel ship structures, the influence of damage on the strength of steel-plated structures and methods for assessing the residual strength of a vessel in an emergency. The focus of the work is to improve the modelling of damaged steel ship structures within an emergency situation, in order to improve guidance provided to a stricken vessel during a damage incident or salvage process. Literature study has shown that structural idealisation through the use of interframe progressive collapse analysis, to be the current state of the art method for the rapid assessment of intact and damaged ship structures. However, a number of weaknesses have been identified in the method when applied to damage assessment. The literature study has also shown a lack of understanding of the effect of damage on steel-plated structures as specific analysis has not been performed previously. Significant research has been undertaken into the influence of damage, in the form of a hole, on the ultimate collapse strength of steel-plated structures. Three levels of structural modelling have been used, stiffened-plate, stiffened panel and grillage. Comparison of the predicted ultimate collapse strength by finite element analysis (FEA) with predictions using the interframe progressive collapse idealisation, has shown the calculated results to be conservative for the assessment of damaged structure when the failure mode remains in the interframe collapse form. However, changes in the failure mode lead to the interframe progressive collapse method over predicting the ultimate collapse strength. The analysis shows that even small damage events can lead to significant changes to the failure mode and resulting ultimate collapse strength of the structure. Such influences must be accounted for in any simplified method. A new method for the assessment of damaged ship structures is proposed that is capable of modelling a damage scenario more accurately. Demonstration of the method has shown the results to be less conservative than the current state of the art, when compared to FEA, for local analysis of damaged steel-plated structure. The ability of the method to account for the influence of damage, and the resulting failure modes, that may significantly influence the ultimate bending strength of the structure has also been demonstrated. The method implements a compartment level progressive collapse analysis with structural data captured through the use of the response surface method ‘kriging’, using data points provided from FEA. This method allows the critical damage variables to be captured and strength data accessible quickly for use in the analysis. The time to provide a solution to the damage scenario is equivalent to the existing interframe progressive collapse method. Therefore, the method is suitable for application within an emergency response or salvage service.
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Asadi, Ghasem Vaez-Zadeh. "Dynamic response of ship structures to impact loads." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29310.

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In this study the dynamic response of a ship structure to impact loads is investigated. The ship motion is fully three-dimensional and the ship structure is modeled as a three-dimensional elastic beam. Finite element methods are used to digitize the equations of motion of the system. The forces on the ship are interactive with the ship motion and position so that a full dynamic analysis is essential. Two main problems are considered: i) Estimation of hull damage when a ship collides with another ship, floating structure or fixed installation. A particular aspect of this analysis which has not previously been examined analytically involves estimating damage to the bottom of ship when it runs aground. Depending on the nature of the ground the ship may be pierced and significant amounts of steel may be torn, or the ship may ride over a sand bar without tearing but with noticeable denting and bending. In such grounding studies it has been necessary to introduce certain strength coefficients, realistic values of which have not been determined, but for which sensible estimates have been made. The results of a numerical study into grounding and collision damage illustrate clearly that ship speed is the major variable in the damage process. In particular the effect of subsequent angular motions incurred during a high speed collision can cause secondary but also significant collisions further aft. It is believed that these aspects of collision and grounding, and the related problems associated with collision whilst maneuvering, have not been investigated previously. ii) Bending stresses induced in ice-breaking ships during operation in ice. In this second class of problems two modes of operations are considered; continuous operation in level ice without loss of speed, and high speed ramming of ice ridges in which the ship is brought to rest. In the continuous ice breaking mode, the impulse loads are relatively low but periodic. The period of the impulse loads varies linearly with ship speed and also depends on the hardness and thickness of the ice. Since the ship is an elastic system with natural frequencies of the same order as impact frequency, some interesting response conditions have been identified leading to large flexural bending stresses in the ship. In the ramming mode,' two response states are of importance., The initial impulse at the bow of the ship, when contact is first made, causes the ship to respond primarily in its first flexural mode with possibly large bending stresses developing during the first second after impact. The ship then rides onto the ice in a "beaching mode" causing large quasi-static bending stresses in the hull which reach a peak after five seconds or so. Both of these peak bending situations have been investigated and their dependence on speed, hull" stiffness, bow angle, and ship speed has been established. In the past few years some data obtained from ships operating in the Beaufort sea has been released, both for continuous ice-breaking and for ramming. Whenever possible those data have been compared with the results predicted by the numerical method developed here. The agreement is shown to be very good.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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Han, Yongqing. "Crack arrest toughness of weldments for ship structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/MQ43341.pdf.

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Books on the topic "Ship and Platform Structures"

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England), Technica Ltd (London, and Great Britain. Dept. of Energy., eds. The Risk of ship/platform collisions in the area of the United Kingdom continental shelf: Report. London: H.M.S.O., 1986.

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

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Shama, Mohamed. Buckling of Ship Structures. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-17961-7.

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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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Korotkin, Alexandr I. Added Masses of Ship Structures. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9432-3.

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Inspection, repair and maintenance of ship structures. 2nd ed. Livingston: Witherby Seamanship International, 2009.

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Caridis, P. A. Inspection, repair and maintenance of ship structures. 2nd ed. Livingston: Witherby Seamanship International, 2009.

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Caridis, P. A. Inspection, repair and maintenance of ship structures. 2nd ed. Livingston: Witherby Seamanship International, 2009.

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Blendermann, Werner. Practical ship and offshore structure aerodynamics. Hamburg: Technische Universität Hamburg-Harburg, 2013.

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SAS Institute. Sas 9.2 Intelligence Platform: Data administration guide. Cary, N.C: SAS Institute Inc., 2009.

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Book chapters on the topic "Ship and Platform Structures"

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Liu, Fan, Run-hua Li, Cheng-ming Liu, Xue-qian Zhou, and Guo-qing Feng. "Crashworthiness analysis of semi-submersible platform column subjected to ship impact loads." In Advances in the Analysis and Design of Marine Structures, 621–27. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003399759-69.

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Redeker, Magnus, Jan Nicolas Weskamp, Bastian Rössl, and Florian Pethig. "A Digital Twin Platform for Industrie 4.0." In Data Spaces, 173–200. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98636-0_9.

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AbstractIn an Industrie 4.0 (I4.0), rigid structures and architectures applied in manufacturing and industrial information technologies today will be replaced by highly dynamic and self-organizing networks. Today’s proprietary technical systems lead to strictly defined engineering processes and value chains. Interacting Digital Twins (DTs) are considered an enabling technology that could help increase flexibility based on semantically enriched information. Nevertheless, for interacting DTs to become a reality, their implementation should be based on open standards for information modeling and application programming interfaces like the Asset Administration Shell (AAS). Additionally, DT platforms could accelerate development and deployment of DTs and ensure their resilient operation.This chapter develops a suitable architecture for such a DT platform for I4.0 based on user stories, requirements, and a time series messaging experiment. An architecture based on microservices patterns is identified as the best fit. As an additional result, time series data should not be integrated synchronously and directly into AASs, but rather asynchronously, either via streams or time series databases. The developed DT platform for I4.0 is composed of specialized, independent, loosely coupled microservices interacting use case specifically either syn- or asynchronously. It can be structured into four layers: continuous deployment, shop-floor, data infrastructure, and business services layer. An evaluation is carried out based on the DT controlled manufacturing scenario: AAS-based DTs of products and manufacturing resources organize manufacturing by forming highly dynamic and self-organizing networks.Future work should focus on a final, complete AAS integration into the data infrastructure layer, just like it is already implemented on the shop-floor and business services layers. Since with the standardized AAS only one interface type would then be left in the DT platform for I4.0, DT interaction, adaptability, and autonomy could be improved even further. In order to become part of an I4.0 data space, the DT platform for I4.0 should support global discovery, data sovereignty, compliance, identity, and trust. For this purpose, Gaia-X Federation Services should be implemented, e.g., as cross-company connectors.
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Paik, Jeom Kee, and Owen F. Hughes. "Ship Structures." In Modeling Complex Engineering Structures, 275–312. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/9780784408506.ch10.

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Aarnio, Markus. "Structures." In Cruise Ship Handbook, 105–11. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11629-2_7.

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Hermans, A. J. "Flexible Floating Platform." In Water Waves and Ship Hydrodynamics, 87–102. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0096-3_6.

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Yee, A. A. "OTEC Platform." In Large Floating Structures, 261–80. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-137-4_10.

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White, Gregory J., Bilal M. Ayyub, E. Nikolaidis, and 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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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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Shama, Mohamed. "Ship Structure Configurations and Main Characteristics." In Buckling of Ship Structures, 3–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-17961-7_1.

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Conference papers on the topic "Ship and Platform Structures"

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Travanca, Joao, and Hong Hao. "Numerical Evaluation of Energy Absorption in Ship-Offshore Fixed Platform Collisions." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24118.

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Both the maritime traffic and the number of built offshore platforms have been continuously increasing over recent times. Among the structures built offshore, the fixed type constitutes the majority. The consequent diversity of plausible collision scenarios involving offshore platforms and passing ships must therefore consider aspects such as different ship size, different impact energy or different impact locations. For high energy collisions, large deformations are expected on both the platform and ship structures. It is expected that part of the energy absorption in the platform is confined to localized zones where plastic deformations take place, although the elastic strain energy may also be significant. For such impact problems, the amounts of strain energy in each structure are mainly dependent on the relative stiffness of the structures. By taking different ship and platform configurations as well as different contact points between the two bodies, different relative stiffness of the two structures can be tested in order to provide a clearer understanding of the dissipation of strain energy. The possible plastic deformation mechanisms are analyzed and simplified approaches are considered for prediction in comparison with the numerical results carried out by finite element analysis. Based on the results, some evaluations are made with respect to the code of practice in offshore platform design against ship impact.
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Khalil, Ahmed, Huda Helmy, Hatem Tageldin, and Hamed Salem. "Ship Impact and Nonlinear Dynamic Collapse Analysis of a Single Well Observation Platform." In Structures Congress 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480410.056.

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Storheim, Martin, and Jørgen Amdahl. "Non-Conservative Consequences of “Conservative” Assumptions in Ship-Platform Collision Analysis." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24457.

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When designing offshore structures it is normally required to withstand a ship impact of a given magnitude without having progressive collapse of the structure. A common assumption when verifying a structure’s crashworthiness is to consider impact from a rigid vessel. This is argued to be a conservative assumption, as the struck structure will have to dissipate all energy. At a given time instant during a real collision, the weakest body will deform. Thus, if the actual strength of the platform is greater than that of the striking vessel, the rigid assumption will be wrong. For impact between a platform and a supply vessel, contact can occur for both the stem (forecastle structure) and the bulb simultaneously. Analyses show that there is a large difference between the strength of the stem and the bulb structure for conventional supply vessels, both in terms of total force and more importantly the pressure exerted to the struck structure. Thus, while the bulb might be stronger than the struck object, the stem is normally crushed. If a completely rigid vessel is assumed, the strain energy dissipation in the struck structure in way of the stem would be highly overpredicted, thereby lowering the estimate of the damage caused by the bulb. This paper investigates the consequences of the rigid assumption by nonlinear finite element analysis. A modern large supply vessel design is checked. The differences between a rigid and a deformable vessel are highlighted, and non-conservative results identified.
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Lotsberg, Inge. "Development of Fatigue Design Standards for Marine Structures." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62516.

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Fatigue design standards for offshore structures became needed with development of offshore structures in harsh environments like the North Sea during the 1970s. The Ultimate Limit State had earlier been the most significant design requirement for similar platforms in the Mexican Gulf being less utilized with respect fatigue. The need for fatigue design of ship structures became increased as more high strength steel was being used in these structures during the 1970s. The analysis method for long term loading and assessment of fatigue capacity has been improved over the years and this has also resulted in need for new and revised design standards. New types of structures and structural components have been developed like tension leg platforms and support structures for wind turbines. These structures are subjected to significant dynamic loading such that fatigue design becomes the main issue and relevant fatigue design standards are needed. Fatigue assessment of fixed offshore structures in the North Sea has been standard practice since the 1970s. Fatigue of floating platforms became a requirement after the accident with the Alexander Kielland platform in 1980. Later new types of structures have been installed in the North Sea such as tension leg platforms and floating production ships where fatigue has been an important part of the design. A further challenge with respect to fatigue came with the development of support structures for wind turbines to be installed in the sea. This paper gives an overview of the development of fatigue design standards for marine structures over the last 40 years. This includes the significance of refined calculation of long term stress range distribution, calculation of hot spot stress, size effect and effect of mean stress effect on fatigue design of ship structures.
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Wang, Xu, Huilong Ren, Xiaolong Lu, and Guoqing Feng. "Numerical Simulation of Green Water and the Safety Analysis Research on Structures and Equipments." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54491.

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With the high speed development of ship building and the widely use of the deep-sea oil platforms in severe sea conditions, green water have attracted more and more attention. Based on the relative motion of ship and wave, a numerical simulation of the distribution of green water on the wet deck of ship is achieved according to the dam break model and flood wave model, and the strength of local structure is calculated. In addition, the calculation model of the impact force on the objects of wet deck is got through the momentum theorem in hydrodynamics, which is used to analyze the safety of the equipment on the wet deck. The research is significant to the safety of the ship and the platform in rough sea.
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Lee, M. M. K., and G. S. Grewal. "Behaviour of Minimum Structure Platforms Under Ship Impact." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51070.

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This paper presents the findings of a numerical investigation into the strength of minimum structure platforms subject to a ship impact. The study has identified important design issues that should be addressed in order to improve the survivability and continued serviceability of minimum structures after a ship impact. It was found that, due to a lack of research effort, design guidelines governing ship impact on minimum structures are lacking in comparison with conventional jacket platforms. In particular, requirements governing the minimum amount of plastic energy absorption in minimum structures are not clearly defined. Ship impact analyses were therefore carried out in order to compare their structural integrity with that for a jacket under ship collision conditions and to evaluate the effects on their ultimate strength. The study not only established any degradation of system strength, but has also determined the amount of plastic energy absorption under various impact scenarios.
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He, Yuhang, Weijia Li, Yaozhong Wu, Jinbo Wu, and Zhiyuan Cheng. "A 6-DOF Ship-Borne Antenna Platform With Large Orientation Workspace." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18024.

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Abstract Compared with traditional antenna platform with two axes, Stewart platform can search airspace with no tracking blind district. And the advantages of high accuracy, high stiffness and high load-weight ratio also make it be a better solution for antenna platforms. This paper designed a 6-DOF ship-borne antenna platform based on the Stewart platform to overcome the difficulties that to realize a large orientation workspace (azimuth range is from 0° to 360°, pitch range is from 0° to 100°) under the compact dimensions of parallel mechanisms. A novel joint structure has been proposed which can provide a larger rotation angle than common Hooke joints to realize the large orientation workspace without the inter-mechanism interference. In addition, this paper defined the concept of working height and working radius then proposed a trajectory based on that to obtain the complete pose (translation and orientation) of antenna platform by azimuth and pitch angles. After that, the particle swarm optimization algorithm is employed to seek the optimal geometrical design parameters. A prototype of the 6-DOF ship-borne antenna platform adopted the particle swarm optimization results has been constructed. And the results show that it not noly meets the design requirements, but also provides a good performance.
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Lazakis, Iraklis, Konstantinos Dikis, and Gerasimos Theotokatos. "Inspection and Maintenance Platform for Enhanced Ship Safety." In SNAME 5th World Maritime Technology Conference. SNAME, 2015. http://dx.doi.org/10.5957/wmtc-2015-200.

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The research work presented in this paper addresses issues related to ship inspection and maintenance through the development of a novel platform as part of the INCASS (Inspection Capabilities for Enhanced Ship Safety) project. INCASS addresses ship safety including structural and machinery monitoring, data gathering, reliability analysis and decision support. As part of the above, a case study on the machinery monitoring will be presented in this paper. The analysis involves ship’s main engine, lubrication and starting sub-systems and various components and failure modes. The case study presents the working state reliability performance on system, sub-system and components levels.
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Hu, Zhiqiang, Weicheng Cui, Longfei Xiao, and Jianmin Yang. "Research on Collision Mechanism for a Ship Colliding With a Spar Platform." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29085.

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The collision mechanisms of spar platform haven’t caused so much attention as that of ships in the past, for the short of this kind of collision accidents reported. But this does not mean the impossibility of the collision accident in the future. The research on external mechanism and internal mechanism for a ship colliding with a spar platform is introduced in this paper. A model test is designed to study the external mechanism. The collision scenario is described as a ship colliding with a spar platform moored in 1500 meters water depth. The specifics of the spar’s motions and the tension forces of the mooring lines are gathered, to find the hydrodynamic characteristics in the collision scenario. It is found that the maximal displacements and the maximal pitch angles of the spar platform, and the maximal tension forces of mooring lines are all linearly proportional to the initial velocity of the striking ship basically. Mooring lines play elastic roles in the collision course. The internal mechanism of the ship colliding with the spar platform is achieved by numerical simulation method and the software used is MSC.DYTRAN. A Truss-Spar is taken as the object and a double hull structural design is adopted in the part of hard tank near water surface. The curves of collision characters and the structural damage are obtained. The crashworthiness of the double hull design is verified, through the numerical simulation results.
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Woelke, Pawel, Eric Hansen, Chad McArthur, Najib Abboud, Darren Tennant, and James Wesevich. "Investigation of Ship Impact Scenarios and Mitigation Measures." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42296.

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Ship impact is an important loading scenario for analysis and design of bridges, oil platforms, and other marine structures. Ships collision is also a very important design consideration for ship hulls. Designing structures to resist both accidental and intentional ship impact requires characterization of the impact loading history. Standard design practice relies on simplified methods to determine the impact loads, which typically consider only speed and mass of the vessel. However, ship impact is a complicated non-linear structural dynamic event that depends not just on the size and mass of the vessel, but also local stiffening pattern, location and function of the bulkheads, possible ice-strengthening classification, draft, presence of the bulbous bow, and many other factors. Neglecting these factors can lead to overestimation or underestimation of the loads, depending on a specific scenario. The discrepancies between simplified load estimates and detailed finite element analyses are investigated in this paper.
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Reports on the topic "Ship and Platform Structures"

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Winterstein, Steven R., and C. A. Cornell. Reliability Assessment of Ship Structures Against Fatigue. Fort Belvoir, VA: Defense Technical Information Center, November 2001. http://dx.doi.org/10.21236/ada390563.

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Jung, Gonghyun, T. D. Huang, Pingsha Dong, Randal M. Dull, Christopher C. Conrardy, and Nancy C. Porter. Numerical Prediction of Buckling in Ship Panel Structures. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada495201.

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Hess, Paul E., and III. Reliability-Based Operational Performance Metrics for Ship Structures. Fort Belvoir, VA: Defense Technical Information Center, April 2003. http://dx.doi.org/10.21236/ada417207.

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Sun, C. T. Development of Toughened and Multifunctional Nanocomposites for Ship Structures. Fort Belvoir, VA: Defense Technical Information Center, July 2012. http://dx.doi.org/10.21236/ada564045.

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Hartman, Andrea, William Long, and Lisa Veitch. Quiet Supersonic Platform (QSP) Materials and Structures Focus Group Meeting, 26 June 2001. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada408538.

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Barcelo-Llull, Barbara. Analysis of the OSSEs with multi-platform in situ data and impact on fine-scale structures. EuroSea, 2022. http://dx.doi.org/10.3289/eurosea_d2.3.

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This report includes recommendations for the planification of in situ experiments aimed to reconstruct fine-scale ocean currents (~20 km), such as those that will be conducted to validate SWOT satellite observations.
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Karr, Dale G., Bingbin Yu, and Senu Sirnivas. Bottom Fixed Platform Dynamics Models Assessing Surface Ice Interactions for Transitional Depth Structures in the Great Lakes: FAST8 – IceDyn. Office of Scientific and Technical Information (OSTI), April 2015. http://dx.doi.org/10.2172/1325200.

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Barcelo-Llull, Barbara, Ananda Pascual, Eugenio Cutolo, Ronan Fablet, Florent Gasparin, Stephanie Guinehut, Jaime H. Lasheras, et al. Design of the Observing System Simulation Experiments with multi-platform in situ data and impact on fine- scale structures. EuroSea, October 2020. http://dx.doi.org/10.3289/eurosea_d2.1.

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Rogers, Robin D., Marcin Smiglak, Julia Shamshina, and David M. Drab. Toward a Modular Ionic Liquid" Platform for the Custom Design of Energetic Materials: Understanding How the Dual Nature of Ionic Liquids Relates Key Physical Properties to Target Structures". Fort Belvoir, VA: Defense Technical Information Center, November 2009. http://dx.doi.org/10.21236/ada626354.

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Patel, Reena. Complex network analysis for early detection of failure mechanisms in resilient bio-structures. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/41042.

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Bio-structures owe their remarkable mechanical properties to their hierarchical geometrical arrangement as well as heterogeneous material properties. This dissertation presents an integrated, interdisciplinary approach that employs computational mechanics combined with flow network analysis to gain fundamental insights into the failure mechanisms of high performance, light-weight, structured composites by examining the stress flow patterns formed in the nascent stages of loading for the rostrum of the paddlefish. The data required for the flow network analysis was generated from the finite element analysis of the rostrum. The flow network was weighted based on the parameter of interest, which is stress in the current study. The changing kinematics of the structural system was provided as input to the algorithm that computes the minimum-cut of the flow network. The proposed approach was verified using two classical problems three- and four-point bending of a simply-supported concrete beam. The current study also addresses the methodology used to prepare data in an appropriate format for a seamless transition from finite element binary database files to the abstract mathematical domain needed for the network flow analysis. A robust, platform-independent procedure was developed that efficiently handles the large datasets produced by the finite element simulations. Results from computational mechanics using Abaqus and complex network analysis are presented.
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