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Relevant bibliographies by topics / Bulkhead

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Academic literature on the topic 'Bulkhead'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Bulkhead"

1

Paik, Jeom K., Anil K. Thayamballi, and Min S. Chun. "Theoretical and Experimental Study on the Ultimate Strength of Corrugated Bulkheads." Journal of Ship Research 41, no. 04 (December 1, 1997): 301–17. http://dx.doi.org/10.5957/jsr.1997.41.4.301.

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The objectives of the present study are to obtain experimental data on collapse strength of steel corrugated bulkhead models and also to develop a simple analytical formulation for ultimate strength useful in the design of corrugated bulkheads under static lateral pressure. Collapse tests on nine mild steel corrugated bulkhead models having five bays of corrugations are carried out, varying the corrugation angle, the plate thickness and the type of loading (axial compression and/or lateral pressure). Using the test data, the characteristics of the collapse mechanism for corrugated bulkheads are investigated. For purposes of rapid first cut estimates of strength, a new and simple analytical formulation for predicting the ultimate strength of corrugated bulkheads under hydrostatic pressure is derived based on an assumed stress distribution over the corrugation cross section at the ultimate limit state. The modeling error associated with the new formulation is established by comparing its predictions with the experimental results. The development of ultimate strength based design guidelines and the effect of design parameters such as the corrugation angle on ultimate strength of a corrugated bulkhead are then discussed. All experimental information and strength data are tabulated, which is a benefit in itself.

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2

Szymanek, Ewa. "Use of fractional calculus in modeling of heat transfer process through external building partitions." Acta Innovations, no. 27 (April 1, 2018): 61–70. http://dx.doi.org/10.32933/actainnovations.27.7.

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This paper is devoted to experimental and numerical studies of heat distribution in an external building bulkhead. It analyzes the variation of temperature across the width of the bulkheads including the impact of changing external conditions. Mathematical model used in the research is formulated based on a fractional differential equation, which was proven to be a useful tool for describing this type of process in previous paper. Numerical results are compared with experiment data for different bulkhead configurations.

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3

Guo, Ruiping, Jason Martino, and David Dixon. "Fully coupled thermohydraulic modelling of the sealing bulkheads and adjacent rock in a full-scale underground test." Canadian Geotechnical Journal 42, no. 5 (October 1, 2005): 1318–29. http://dx.doi.org/10.1139/t05-049.

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The Tunnel Sealing Experiment (TSX) was a two-phase international project funded by Canada, Japan, France, and the United States. The first phase was pressurizing the TSX chamber to 4 MPa to investigate the ability of clay and concrete bulkheads to reduce hydraulic flows. The second phase involved circulating heated water through the chamber to evaluate the influence of elevated temperature on the performance of the bulkheads and adjacent rock. A numerical analysis to simulate thermohydraulic evolution of the bulkheads and surrounding rock of the TSX was conducted to help in understanding the physical test process and the interaction between heat and pore pressure evolutions. The simulated rock temperature matched the measured data quite well; however the simulated bulkhead temperatures were greater than the measured temperatures. The difference may have been caused by entrapped air or formation of microchannels in the chamber sand, which would decrease the amount of heat reaching the bulkheads. The simulated thermally induced pore pressure increase in the clay bulkhead reasonably matched the measured data for the saturated portion. The difference in magnitude between simulated and measured rock pore pressures indicates that thermo hy draulic simulation should be coupled with a mechanical component when the stiffness of the media is large and hydraulic conductivity is low.Key words: numerical modelling, Tunnel Sealing Experiment, nuclear waste management, hydraulic head, thermal conduction, thermal convection.

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4

May, Peter I., Matthew Lagomarsino, and Patrick Kangas. "The green bulkhead: a vertical wetland design for urban harbors." Journal of Applied Biotechnology & Bioengineering 8, no. 3 (May 20, 2021): 76–79. http://dx.doi.org/10.15406/jabb.2021.08.00256.

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In urban harbors there is a reliance on the “gray infrastructure” of armored bulkheads along shorelines. While this form of shoreline technology provides stability and eliminates erosion, it limits shoreline biodiversity and lacks aesthetic value. In this paper, a living shoreline concept, termed the Green Bulkhead, is described and demonstrated. This is a kind of artificial vertical wetland with plants grown in a porous plastic fabric that is draped over the surface of an existing bulkhead. The system is irrigated with water that is pumped from the harbor. Several alternate designs have been tested for different medium types, planting patterns and water pumping regimes. It is proposed that the green bulkhead system can provide limited treatment wetland services in an urban setting where cost-effective water quality management options are minimal. Testing found that high percentages of sediment were retained within the matrix of the different media. The system has aesthetic benefits by “greening” the harbor environment with wetland plants and, because of its vertical orientation, it can be managed adaptively for sea level rise. This work is a report of an on-going ecological engineering project with demonstrations along the Baltimore, Maryland Inner Harbor and the Anacostia Waterfront in Washington, DC.

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Hagerty, D. J., and M. M. Nofal. "Design aids: anchored bulkheads in sand." Canadian Geotechnical Journal 29, no. 5 (October 1, 1992): 789–95. http://dx.doi.org/10.1139/t92-086.

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Available design methods for anchored bulkheads do not allow easy optimization of design. To facilitate optimization, generalized parameters were developed to characterize the design situation and analytical results. Design aids were formulated as graphs and tables which show the relations among input data (anchor location, surcharge pressure, dredge depth, depth to water, and soil characteristics) and design output (maximum moment, anchor force, and embedment). Key words : bulkhead, anchored, design, dredged, sand.

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6

Wang, Hong, Peng Liu, Xiang Liu, and Jin Gang Duan. "Soil-Pile Coupling Analysis of Steel Sheet Pile Bulkhead under Horizontal Loads." Applied Mechanics and Materials 744-746 (March 2015): 1180–83. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1180.

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With the development of steel sheet pile bulkhead gradually toward large-scale and deep water, natural conditions become worse and structural load rating continues to improve, design and construction of steel sheet pile bulkhead needs higher requirements. Then the stability of sheet pile bulkhead under horizontal loads becomes particularly prominent. This paper presents the displacement and stress of steel sheet pile bulkhead structure under different horizontal loads using ANSYS, which provide academic support for the design and construction of steel sheet pile bulkhead.

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7

perumal, A. Elaya. "An Innovative Bulkhead Design to Replace the Bulkhead Holes." Procedia Engineering 38 (2012): 3019–30. http://dx.doi.org/10.1016/j.proeng.2012.06.352.

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8

Hang, Yuan, Lichuang Jin, Binbin Yang, Ning Li, Shichong Yuan, Zhilin Gao, Linxuan Sun, Sen Zheng, and Mingming Hu. "Evaluation of Water Retention Capacity of Bulkheads in Underground Coal Mines." Advances in Civil Engineering 2021 (January 12, 2021): 1–10. http://dx.doi.org/10.1155/2021/6612498.

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The mechanism of water flow in and around the bulkheads and the surrounding rock is studied for Panel No. 21102 in the Sanhejian coal mine in Xuzhou, China. Based on an analysis of the properties of the bulkheads and the surrounding rock, three types of water conducting pathways are identified: (1) a water conducting pathway at the interface between the bulkhead and the surrounding rock; (2) a water conducting pathway in the faults of the rock; and (3) a water conducting pathway in the fractures of the rock. The possibility of these three pathways for water flow at Panel No. 21102 is analyzed, and the connectivity coefficient of the water conducting pathway is determined. The expression for calculating the critical hydraulic gradient of the rock by using the connectivity coefficient in the water conducting pathways is presented which is based on the permeability and integrity of the rock. The ratios of the critical hydraulic gradient to the steady state hydraulic gradient are calculated for 13 mines in China. An acceptable safety factor in controlling the water flow for the bulkhead is found to be 1.68. When the safety factor is less than 1.68, water leakage has occurred in a number of cases. Finally, changes in the water pressure in the bulkheads with time and changes in the seepage flow with time in the surrounding rock are analyzed. It is found that there is a good correlation between the rate of water flow and water pressure which confirms that water pressure plays a decisive role in controlling seepage from the rock in and around the bulkheads.

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9

Didry, Olivier, Malcolm N. Gray, André Cournut, and James Graham. "Modelling the early age behaviour of a low heat concrete bulkhead sealing an underground tunnel." Canadian Journal of Civil Engineering 27, no. 1 (February 15, 2000): 112–25. http://dx.doi.org/10.1139/l99-055.

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A major experiment - the tunnel sealing experiment, related to the disposal of heat generating radioactive wastes in geological formations and supported by government organizations from Japan, France, U.S.A., and Canada, is being carried out at the Underground Research Laboratory of Atomic Energy of Canada Limited in Manitoba, Canada. Through a systematic process, the results from the experiment will be used to validate numerical models for the early age behaviour of high mass concrete bulkheads. A numerical model, based on the CESAR-LCPC finite element code equipped with the modules TEXO and MEXO, has been developed and used to predict the behaviour of a concrete bulkhead which will be built as part of the experiment. The TEXO-based component of the model which describes temperature changes has been validated. A maximum temperature rise in the concrete of 19°C is calculated. This will occur about 4 days after the concrete is cast. The temperature rise is low. This arises from the use of a specially developed low cement content concrete. Despite uncertainties in the MEXO-based model, which is used to describe the chemo-mechanical behaviour of the system, results indicate that it is unlikely that the concrete will crack, but a gap of 0.5 mm or more will develop between the bulkhead and the rock. Water leakage around the bulkhead through this gap could be significant and measures to seal this gap are advised. The modelling results recorded here will be tested against measurements made in the experiment. Thus, the numerical model will be formally validated and bounds to its use will be defined. Key words: concrete, bulkhead, sealing, early age behaviour, heat of hydration, autogenous shrinkage, underground repository, modelling.

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10

Тряскин, В. Н., and С. Юй. "Statement and solution the problem of designing of water-tight bulkheads web frames for large container vessels by using DNV-GL rules requirements and optimization techniques." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII), no. 3(53) (August 27, 2021): 53–59. http://dx.doi.org/10.37220/mit.2021.53.3.006.

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Поперечные переборки крупнотоннажных контейнерных судов представляют собой сложные конструкции, при проектировании которых обычно используется методология проверочного расчета на основе метода конечных элементов (МКЭ). Для создания конечно-элементной модели необходимо знать размеры всех элементов конструкций, входящих в состав переборки. Поэтому такой подход к проектированию является итерационным, что обуславливает высокую трудоемкость процесса проектирования. На ранних стадиях проектирования размеры конструкций поперечных переборок контейнеровоза могут быть быстро и достаточно точно оценены на основе аппарата нелинейного программирования, относительно простой модели составной (конструктивно-ортотропной) пластины и нормативных требований Правил классификационных обществ. Такой подход применяется в Российской практике при проектировании двойных конструкций типа двойное дно или понтон плавучего дока. В статье предложено решение задачи проектирования рамного набора поперечной переборки крупнотоннажного контейнеровоза на нагрузки от контейнеров, действующие на переборку при качке судна. Конструкция переборки приводится к условной модели «коффердамного» типа. Затем используется методика приведения составной «конструктивно-ортотропной» пластины к изотропной пластине с несколько иным соотношением сторон, но с такими же параметрами изгиба. Это позволяет применить существующие табличные данные для определения расчетных изгибающих моментов и перерезывающих сил, которые после аппроксимации представляются в виде полиномов – аналитических зависимостей. Показана постановка оптимизационно-поисковой задачи математического программирования. Целевая функция – характеристика массы рамного набора. Ограничения задачи формируются на основе нормативных требований DNV-GL и математических зависимостей модели составной пластины. Для решения задачи используется инструмент MS Excel «Поиск решения» Представлены результаты тестового проектного расчета применительно к конструкции крупнотоннажного контейнеровоз с контейнерной вместимостью 18 тыс. TEU. Сопоставление результатов проектирования с оригинальными расчетами фирмы – проектанта показали удовлетворительное соответствие. The transverse bulkheads of the large container vessels are complex structures that are commonly designed using the finite element method (FEM) verification methodology. To create a finite element model, it is necessary to know the dimensions of all structural elements of the bulkhead. Therefore, this approach to design is iterative, which leads to a high complexity of the design process. At the early stages of design, the dimensions of the structures of the transverse bulkheads of a container vessel can be quickly and accurately estimated based on the nonlinear programming technique, a relatively simple model of a composite (structural-orthotropic) plate, and the regulatory requirements of the Rules of Classification Societies. This approach is used in practice in Russia when designing double structures such as a double bottom or pontoon of a floating dock. The article proposes a solution to the problem of the transverse bulkhead web frames designing in application to a large-tonnage container vessel for loads of containers acting on the bulkhead when the vessel is moving on the waves. The bulkhead structure is reduced to the conditional "cofferdam" type model. The technique is used to reduce a composite "structurally-orthotropic" plate to an isotropic one with a slightly different aspect ratio, but with the same bending parameters. This allows applying the existing tabular data to determine the design bending moments and shear forces, which, after approximation, are represented as polynomial analytical dependencies. The statement the optimization-search problem of mathematical programming is shown. The goal function is the characteristic of the bulkhead's webs mass. The constraints of the problem are formed on the DNV-GL regulatory requirements and mathematical relationships of the composite plate model. MS Excel tool "Solver" is used to solve the problem. The results of a test calculation are presented as applied to a large-capacity container ship with container capacity of 18000 TEU. Comparison of the design results with the original calculations of the designer’s company showed satisfactory agreement.

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Dissertations / Theses on the topic "Bulkhead"

1

Erskine, Jon S. "Effects of welding on energy dissipation in a watertight bulkhead." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FErskine.pdf.

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2

Vellone, Davide. "Ottimizzazione strutturale di una bulkhead di fusoliera di velivoli da trasporto commerciale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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The present state-of-the-art of the rear pressure bulkhead foresees the use of two types of materials: aluminium alloy Al2024 (exploited in the applications where tensile or fatigue loads are predominant like in the fuselage paneling) and composite materials (carbon fiber reinforced polymer). For the metallic case, the problem of the deep drawing of an aluminium alloy sheet into a hemispheric dome consists in the phenomenon of wrinkles formation (wrinkling); this is linked to the thickness of the plate and its dimensions. In this thesis we provide a carrying out solution by additive manufacturing. On the base of what developed by Airbus, which created AM spoiler prototypes taking inspiration from the structure of lily pad, this thesis work aims to develop a bulkhead and its stiffeners design optimization. The use of additive manufacturing in the bulkhead production shows two big advantages compared to traditional working: the chance to create complex geometries and the absence of internal residual stress and wrinkling phenomenon. The analysis of the studied structures allows to verify advantage of the rounded bulkhead configuration instead of the plane one (almost one lower order of magnitude for displacements), structural optimization due to stiffeners, consistency with lily pad shape.

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3

Brown, Christian R. (Christian Randall). "Effect of hull-to-bulkhead flexible connection on blast resistance of double hulled ships." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/33434.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.
Includes bibliographical references (p. 65).
The use of double hull construction is commonplace within the shipping industry though it is largely unexploited within naval vessels. The Impact and Crashworthiness Lab at MIT has proposed the use of adaptive sandwich structures to improve the blast resistance of naval hulls. This project will address two main areas of investigation through the use of simplified analytical models: the integration of hardening and softening plastic core responses in the crushing of a rigidly supported sandwich panel; and the deformation analysis of a sandwich panel supported by non-rigid connections. The analytical solutions were utilized to perform a series of parametric studies to evaluate both the useable range of the models as well as to investigate the general behavior of a sandwich panel under a uniform load when supported by crushable connections. This initial investigation provides the simplified tools to begin and to validate a more detailed, numerical analysis.
by Christian R. Brown.
S.M.

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4

Hendrickson, Carl E. II. "Modeling the Effect of a Compartment Fire on Spaces Adjacent to a Bulkhead With and Without Attachments." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2609.

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Structural fire protection is an integral component of shipboard fire safety. There are national and international regulations that delineate requirements for the insulation placed throughout ships. The attachments that penetrate the insulation for hanging wires and pipes can disrupt the integrity of the division, and cause a failure to adhere to the regulations. This problem will be analyzed by using a simplified lumped capacitance model and ANSYS FLUENT CFD. A standard time-temperature fire curve is applied to the fire side of the enclosure. The thermal conductivity of the insulation and steel are made to be temperature dependent. The density of the air of the non-fire side is then approximated using the Boussinesq approximation for lower temperature differences and the incompressible ideal gas law for higher temperature differences. Different attachments of varying surface areas and volumes are exposed to the standard time-temperature fire curve and their heat transfer capabilities are analyzed.

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5

Ferrari, Alberto. "Analytical model for the prediction of wrinkling of rear pressure bulkheads." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8587/.

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In Airbus GmbH (Hamburg) has been developed a new design of Rear Pressure Bulkhead (RPB) for the A320-family. The new model has been formed with vacuum forming technology. During this process the wrinkling phenomenon occurs. In this thesis is described an analytical model for prediction of wrinkling based on the energetic method of Timoshenko. Large deflection theory has been used for analyze two cases of study: a simply supported circular thin plate stamped by a spherical punch and a simply supported circular thin plate formed with vacuum forming technique. If the edges are free to displace radially, thin plates will develop radial wrinkles near the edge at a central deflection approximately equal to four plate thicknesses w0/ℎ≈4 if they’re stamped by a spherical punch and w0/ℎ≈3 if they’re formed with vacuum forming technique. Initially, there are four symmetrical wrinkles, but the number increases if the central deflection is increased. By using experimental results, the “Snaptrhough” phenomenon is described.

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6

Di, Santi Filippo. "Ottimizzazione topologica di paratie di pressurizzazione di velivoli commerciali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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In questa tesi sono trattate la produzione e l'ottimizzazione di paratie di pressurizzazione di velivoli commerciali. Sono stati confrontati i dati inerenti alla piegatura della paratia provenienti dall'equazione analitica e dall'analisi FEM, mentre, per quanto riguarda l'ottimizzazione, è stato effettuato uno studio sui rinforzi alla ricerca della soluzione migliore in termini di peso e di distribuzione delle tensioni.

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Ling, Qi. "Design of Automotive Joints Using Response Surface Polynomials and Neural Networks." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/45205.

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In the early design stages of a car body, a simplified model, which represents the constituent components of the car body by their performance characteristics, is used to optimize the overall car. The determined optimum performance characteristics of the components are used as performance targets to design these components. Since designers do not know the relation between the performance characteristics of the components and their dimensions and mass, this may lead to unreasonable performance targets for the components. Moreover, this process is inefficient because design engineers use empirical procedures to design the components that should meet these targets. To design the component more efficiently, design tools are needed to link the performance targets with the physical design variables of the components. General methodologies for developing two design tools for the design of car joints are presented. These tools can be viewed as translators since they translate the performance characteristics of the joint into its dimensions and vice-versa. The first tool, called translator A, quickly predicts the stiffness and the mass of a given joint. The second tool, called translator B, finds the dimensions and mass of the most efficient joint design that meets given stiffness requirements, packaging, manufacturing and styling constraints. Putting bulkheads in the joint structure is an efficient way to increase stiffness. This thesis investigates the effect of transverse bulkheads on the stiffness of an actual B-pillar to rocker joint. It also develops a translator A for the B-pillar to rocker joint with transverse bulkheads. The developed translator A can quickly predict the stiffness of the reinforced joint. Translator B uses optimization to find the most efficient, feasible joint design that meets given targets. Sequential Linear Programming (SLP) and the Modified Feasible Direction (MFD) method are used for optimization. Both Response Surface Polynomial (RSP) translator B and Neural Network (NN) translator B are developed and validated. Translator A is implemented in an MS-Excel program. Translator B is implemented in a MATHEMATICA program. The methodology for developing translator B is demonstrated on the B-pillar to rocker joint of an actual car. The convergence of the optimizer is checked by solving the optimization problem many times starting from different initial designs. The results from translator B are also checked against FEA results to ensure the feasibility of the optimum designs. By observing the optimum designs and by performing parametric studies for the effect of some important design variables on the joint mass we can establish guidelines for design of joints.
Master of Science

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8

Schneider, William Frank. "Eigenvalue veering and mode localization in a hemispherically capped ciruclar cylindrical shell with an elastic bulkhead at midplate." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/17956.

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9

Baumann, Gregg W. "Linear structural stress analysis of a hull girder penetration and a short longitudinal bulkhead using finite element modeling." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8623.

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Approved for public release; distribution unlimited.
The objective of this study is to investigate structural shadow zones encountered in shipbuilding design using the I-DEAS (Integrated Design Engineering Analysis Software) software. The term 'shadow zone' refers to areas of low stress concentrations that are caused by lines of stress bending around structural discontinuities. Two ship design situations frequently encountered that result in shadow zones are hull girder penetrations and short structural longitudinal bulkheads. In both of these situations, a long-used rule of thumb is to construct a line with a slope of 1:4 originating from the. discontinuity that encompasses the area of low stress. The material within this line is then considered ineffective when computing the section modulus. This can prove to be expensive. However, powerful finite element analysis software is readily available that can analyze the shadow zones in greater detail and possibly minimize the area considered ineffective. This study uses the I-DEAS software to develop finite element models of the cited design situations for a U.S. Navy Frigate, FFG-7 class of ship. It conducts a static structural linear analysis of the ship balanced on a trochoidal wave of height 1.1 VL. The results generated in this study validate the rule of thumb in both situations

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10

Hayner, Mark A. (Mark Andrew). "Wave-based finite element method applied to thick, in-vacuo, cylindrical shells with keel or bulkhead plate attachments at middle to high frequency." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47563.

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Books on the topic "Bulkhead"

1

Pegg, Neil G. Finite element investigation of a tanker midship webframe bulkhead using the HVAST program. Dartmouth, N.S: Defence Research Establishment Atlantic, 1990.

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

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3

Ahmed, R. Analysis and test of low profile aluminum aerospace tank dome. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Ahmed, Rafiq. Analysis and test of low profile aluminum aerospace tank dome. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Soderberg, R. L. Bulkheads and drains for high sandfill stopes. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Chekan, G. J. Design of bulkheads for controlling water in underground mines. [Avondale, Md.]: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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B, Tatham P. F., Construction Industry Research and Information Association., and British Ports Federation, eds. Old waterfront walls: Management, maintenance, and rehabilitation. London: E & FN Spon, 1992.

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8

Batozhabaĭ, D. Bulkhaĭ buluugaaraa garaba: Nėgė-khoër akttaĭ zu̇zhėgu̇u̇d. Ulaan-U̇dė: "Respublikyn khėblėlėĭ u̇ĭlėdbėri" Gėzhė bu̇lgėmėĭ khėblėl, 2007.

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9

Harteis, Samuel P. Guidelines for permitting, construction, and monitoring of retention bulkheads in underground coal mines. Pittsburgh, PA: Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 2008.

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10

Chīmu, Doboku Kenkyūjo (Japan) Kōzōbutsu Kenkyū Gurūpu Kiso. Neire no aru chokusetsu kiso no jishinji zanryū henʼi ni kansuru kurikaeshi saika jikken. [Tsukuba-shi]: Doboku Kenkyūjo Kōzōbutsu Kenkyū Gurūpu Kiso Chīmu, 2007.

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Book chapters on the topic "Bulkhead"

1

Xi, Longfei. "Bulkhead." In Thirty Great Inventions of China, 635–45. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6525-0_22.

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Weik, Martin H. "bulkhead connector." In Computer Science and Communications Dictionary, 151. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_1929.

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Apicella, A., Enrico Armentani, Renato Esposito, and Michele Pirozzi. "Finite Element Analysis of a Composite Bulkhead Structure." In Advances in Fracture and Damage Mechanics VI, 553–56. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-448-0.553.

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Gravit, Marina, and Ivan Dmitriev. "Fire Resistance of Steel Bulkhead Under Hydrocarbon Fire Conditions." In Lecture Notes in Civil Engineering, 486–95. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72404-7_47.

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Tang, Z. T., Zhan Qiang Liu, and Xing Ai. "Optimization of Bulkhead Processing Sequence for Multi-Frame Monolithic Components by FEM." In Advanced Materials Research, 355–60. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-461-8.355.

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Campbell, A. M., and J. E. Allison. "A Comparison of Cast Aluminum Bulkhead Fatigue Resistance: The Effect of Specimen Geometry." In Supplemental Proceedings, 539–46. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118357002.ch68.

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Friebel, Harry C. "Bulkheads." In Encyclopedia of Estuaries, 110–11. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_63.

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Okumoto, Yasuhisa, Yu Takeda, Masaki Mano, and Tetsuo Okada. "Bulkheads." In Design of Ship Hull Structures, 431–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88445-3_24.

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Andersson, B., A. F. Blom, U. Falk, G. S. Wang, K. Koski, A. Siljander, J. Linna, A. Miettinen, K. Vaaraniemi, and R. Lahtinen. "A Case Study of Multiple-Site Fatigue Crack Growth in the F-18 Hornet Bulkhead." In ICAF 2009, Bridging the Gap between Theory and Operational Practice, 707–41. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2746-7_40.

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Bellezi, Cezar Augusto, Liang-Yee Cheng, Tetsuo Okada, and Makoto Arai. "Numerical Assessment of Sloshing Loads in Rectangular Tanks Equipped with Perforated Swash Bulkhead Under Large Excitations." In Lecture Notes in Civil Engineering, 954–72. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4624-2_57.

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Conference papers on the topic "Bulkhead"

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Galloway, Joseph R., Pooja Jain, Monique Anderson, Stuart Stringer, Chad Goodnight, Stephen Dickenson, and Arul K. Arulmoli. "Seismic Design of Anchored Bulkheads: Tieback Bulkhead Example." In 15th Triennial International Conference. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482612.053.

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Achani, Dasharatha. "Design of Conventional and Assembled Bulkhead for a Flowline Bundle." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61448.

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A bundle, in general, comprises flowlines enclosed with carrier pipe and bulkheads at each end. Under operational load conditions, bundle expands in each end and releases forces from inner pipe and induces forces in outer pipe. The bulkheads that try to restrict the bundle expansion are subjected to interface forces on both sides and shall be designed and manufactured against the codes in compliance with DNV-OS-F101. A conventional bulkhead, referred as forged Bulkhead, is typically manufactured by a hot forging process as per the specified standard. For the forged bulkhead, the main body, surface and nibs shall be of specified material grade and the material shall be quenched and tempered after forging. Previous experience from different projects shows that it is sometimes hard for the forged bulkhead to achieve the results from mechanical testing to meet standard requirements and it is even expensive. A bulkhead manufactured by assembled method can be considered as an alternative. The assembled bulkhead, in the present work, comprises of a plate with boreholes. The small pipe inserts of the respective borehole sizes are fitted through boreholes and circumferentially welded to the bulkhead plate. The ends of each pipe inserts are further welded with the ends of respective size of flowlines of the bundle in one side and the spools on the other side. The work in this paper presents general design and methodology for the forged bulkhead of 4-line bundle. Further, the work also presents an alternative design for a conventional forged bulkhead. The design is based on FE analyses performed using finite element (FE) tool ANSYS and 3D FE models established by using advanced solid elements from ANSYS. For the same load conditions, the results from analyses show that the assemble bulkhead meets the acceptance criteria from the design methodology and can be considered as an alternative provided that appropriate welding techniques and NDE procedure are ensured in the weld root area of the welds between the pipe inserts and bulkhead plate.

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Chen, Q., L. Q. Wang, H. K. Chia, and Andrew Ngiam. "Thermal Expansion Analysis of Pipe-in-Pipe System Having Multiple Bulkheads." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80156.

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This paper presents an analytical mathematical model for the thermal expansion analysis of pipe-in-pipe systems with multiple bulkheads. This analytical method is extended to study the effects on thermal expansion of multiple bulkheads for given internal installation temperature, operating temperature, tie-in spool piece arrangement, pipe submerged weight, seabed friction, pipe cross sectional area, pressure and axial stiffness of the pipes. The advantage of this method is that it yields purely analytical solution and that the analysis results provide the interaction forces in any cross section of the pipe-in-pipe system as well as the stresses and strains in both the inner and outer pipes, which provide enough information to optimize the pipe-in-pipe system design, especially at the bulkhead location. The examples illustrated in the paper show that with the application of multiple bulkheads in the pipe-in-pipe system, the interaction forces between bulkheads and pipes can be reduced, which allow less onerous bulkhead design.

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Warwick, Braden T., Chris K. Mechefske, and Il Yong Kim. "Effect of Stiffener Configuration on Bulkhead Modal Parameters." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85385.

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Optimization of bulkhead stiffener configuration has been an active area of research over the past decade, but no real practical solutions have been generated. This research investigates bulkhead stiffener configuration on a rudimentary level, by analyzing the modal parameters of three different stiffener configurations. Experimental data was used to validate the computational models of two modified bulkhead stiffener configurations. Operational boundary conditions were then applied to the computational models to assess the modal density of the modified bulkheads within the aircraft engine rotational frequency range. Removal of one horizontal stiffener reduced the overall stiffener mass by 12.2% without generating any modes within 4% of the engine rotational frequency. The inconsistencies of natural frequency changes due to stiffener configuration highlights the difficulty with applying generalized optimization approaches without a thorough understanding of the modes of interest. The results of this work suggest that the fundamental analysis performed herein is necessary to generate a complete understanding of the modal parameters of the bulkhead prior to performing in-depth optimization work.

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Manouchehri, Soheil, and David Kaye. "Design of Reelable Bulkheads: Application of Pressure Vessel and Subsea Pipeline Codes." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41417.

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Midline bulkheads are often used as a restraining mechanism in High Pressure / High Temperature (HP / HT) pipe-in-pipe (PIP) systems. Their primary function is to share the loads between the inner and outer pipes and / or to minimize the extent of damage in an operational or installation incident. They can also be used during reeled pipelay to facilitate the reel-to-reel or trip-to-trip weld tie-in. Design of a reeled bulkhead, which is categorized as a “pipeline component” under DNV-OS-F101, requires the careful adaptation of a Pressure Vessel Code (PVC), a subsea pipeline code and compliance with the additional requirements of reeling, welding and fabrication. Modern pipeline codes, such as DNV-OS-F101, are LRFD based codes in which different limit states (failure modes) have been formulated and calibrated based on a given probability of failure. The PVCs, however, do not specifically address the pipeline design and careful consideration in selecting load factors, load combinations and the analysis method are necessary. This paper summarizes a procedure that has been adopted in design of reeled midline bulkheads. The methodology can also be used in design of reeled end bulkheads. Firstly, the initial geometric dimensions of the reelable bulkhead are defined and its reelability is confirmed. Then, appropriate load combinations are identified from ASME BPVC Section VIII – Division 2. Finally, a series of Finite Element Analyses (FEA) are performed to show the fitness-for-service of the bulkhead. The importance of selecting an appropriate and justifiable “code break” is highlighted here.

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Dillhoefer, Thorsten, and Fatih Erdinc. "CPAC Bulkhead Riveting System." In AeroTech Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2017. http://dx.doi.org/10.4271/2017-01-2074.

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Carney, Mike. "Olmsted Lock Operating Bulkhead." In Structures Congress 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40889(201)127.

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FU, ZONGFU, ZHONGMIN YAN, and YAN LU. "STABILITY CHARACTERISTICS OF FLOATING BULKHEAD." In Proceedings of the 13th IAHRߝ;APD Congress. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812776969_0147.

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Bearmore, Bethany, Brett Ozolin, and Patricia Sacks. "Fort Tilden Historical Bulkhead Assessment." In 14th Triennial International Conference. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479919.077.

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Ludlow, C., A. Cutler, and S. Klepper. "Hydrogel Embedded Foam Actuators for Emergency Seal Applications: Improved Safety and Reduced Costs." In SNAME Maritime Convention. SNAME, 2014. http://dx.doi.org/10.5957/smc-2014-p42.

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Bulkhead and hull penetrations have the potential to cause substantial safety concerns during a seal failure (in the case of a stern tube seal) or a flooding event (in the case of a bulkhead seal or bulkhead penetration). In some instances,it is advantageous for these penetrations to have a running clearance during normal operating conditions and then seal during a flooding event. This paper will present the safety and cost benefits of a new seal approach for hull and bulkhead penetrations where a hydrogel embedded foam actuator is utilized. The paper will focus on applications of bulkhead seals, emergency backup stern tube seals and pipe and wire penetrations.

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Reports on the topic "Bulkhead"

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Begeal, D. R. Through bulkhead initiator studies. Office of Scientific and Technical Information (OSTI), March 1997. http://dx.doi.org/10.2172/463627.

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Hartman, Quinn D. Multiple Launch Rocket System (MLRS) Pods on a Center Beam Bulkhead Flatcar and a Bulkhead Flatcar. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada250751.

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Probst, Mark R. Leak Testing of Pressurized-Bulkhead Mil Connectors. Fort Belvoir, VA: Defense Technical Information Center, November 2010. http://dx.doi.org/10.21236/ada531955.

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Smith, Timothy M. DC-9 AFT Pressure Bulkhead Residual Strength Test. Fort Belvoir, VA: Defense Technical Information Center, December 2000. http://dx.doi.org/10.21236/ada397757.

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Bell, Gary, and Duncan Bryant. Red River Structure physical model study : bulkhead testing. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40970.

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The US Army Corps of Engineers, St. Paul District, and its non-federal sponsors are designing and constructing a flood risk management project that will reduce the risk of flooding in the Fargo-Moorhead metropolitan area. There is a 30-mile long diversion channel around the west side of the city of Fargo, as well as a staging area that will be formed upstream of a 20-mile long dam (referred to as the Southern Embankment) that collectively includes an earthen embankment with three gated structures: the Diversion Inlet Structure, the Wild Rice River Structure, and the Red River Structure (RRS). A physical model has been constructed and analyzed to assess the hydraulic conditions near and at the RRS for verification of the structure’s flow capacity as well as optimization of design features for the structure. This report describes the modeling techniques and instrumentation used in the investigation and details the evaluation of the forces exerted on the proposed bulkheads during emergency operations for the RRS.

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Pope, W. L., and R. D. Watt. LAr calorimeter for SCC with a common vacuum bulkhead---a concept to improve hermeticity. Office of Scientific and Technical Information (OSTI), November 1989. http://dx.doi.org/10.2172/7247479.

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DeGiorgi, Virginia, and Peter Matric. A Computational Study of HY and HSLA Steel Performance in a Bulkhead Test Panel Geometry. Fort Belvoir, VA: Defense Technical Information Center, February 1991. http://dx.doi.org/10.21236/ada235538.

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Blanford, M., D. Segalman, and R. Parrish. Strength analyses of Weeks Island bulkheads. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/6976597.

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Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California (Fact Sheet). Office of Scientific and Technical Information (OSTI), October 2013. http://dx.doi.org/10.2172/1096676.

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Hispanic laborer dies when dump mechanism of lift truck activates and crushes him between the truck bed bulkhead and bridge beam. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, September 2003. http://dx.doi.org/10.26616/nioshsface02mi157.

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