Relevant bibliographies by topics / DEFLECTOR PLATE

Academic literature on the topic 'DEFLECTOR PLATE'

Author: Grafiati
Published: 11 September 2023

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Journal articles on the topic "DEFLECTOR PLATE"

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Misyulya, D. I., A. A. Borovik, and S. K. Protasov. "Conic plate deflector." Russian Journal of Applied Chemistry 82, no. 4 (April 2009): 696–98. http://dx.doi.org/10.1134/s1070427209040302.

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Faizal Hakim Hidzir, Mohd, Khairul Imran Sainan, and Hazran Husain. "Title of the Integrity Analysis of O&G Standpipe Separator: Numerical Study Article." International Journal of Engineering & Technology 7, no. 4.27 (November 30, 2018): 73. http://dx.doi.org/10.14419/ijet.v7i4.27.22483.

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A standpipe is a component that functions to remove the condensate of gas from the oil that flows inside the O&G piping system underneath. Efficient gas removal promotes better crude oil quality and increases productivity. The deflector plates integrity in a stand pipe, where thin plates are mounted on the pipe walls periodically in the direction of fluid flow, has been numerically investigated. The aim of this investigation is to determine how the working fluid density and deflectors thickness influenced the plates integrity. Two working fluids were tested. Natural gas and crude oil which has a higher density. The thickness of the plates was 3 mm and 6 mm. A series of simulation analyses were done analytically through CFD and FEA simulation method using ANSYS software. Based on the results, crude oil produces higher stress onto the plates. This causes large plate deflection. It was observed, the plates near to the standpipe inlet were subjected to the highest stress. Stress on the deflector plates drops as the fluid travel along the pipe height. The deflector plates of 3 mm were failed under these conditions and were not recommended for usage.
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Yao, Gang, Linjun Wu, Yang Yang, Maoyi Liu, Yuxiao Chen, and Hongbo Du. "Study on the Suppression Effect on Vortex-Induced Vibration of Double-Deck Truss Girder by the Spatial Position of the Deflector Plate." Applied Sciences 13, no. 17 (August 29, 2023): 9764. http://dx.doi.org/10.3390/app13179764.

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This paper carried out wind tunnel tests and numerical analysis to study the effect of the spatial position of deflector plates on the vortex-induced vibration (VIV) of a double-deck truss girder. The wind tunnel tests found that setting the web deflector plate and the lower chord deflector plate significantly suppressed the VIV. In order to study the suppression mechanism of the deflector plate on VIV, numerical simulations were conducted using the computational fluid dynamics (CFD) method. We analyzed the suppression mechanism of the deflector plate on VIV by combining the vertical amplitude obtained by numerical simulation with the change in the vorticity magnitude and direction. The results showed that the flow velocity around the lower surface of the airflow was reduced, resulting in significantly lower vorticity at the exact position of the lower chord deflector plate and web deflector plate section compared to the original section. The web deflector plate and the lower chord deflector plate broke the vortex shedding mode in the wake flow region, and the vortex shedding frequency was far away from the self-oscillation frequency of the double-deck truss girder, thus suppressing the VIV.
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Son, Namjeong, Yoojin Kim, Mimi Min, Seungho Jung, and Chankyu Kang. "Numerical Investigation of Overtopping Prevention for Optimal Safety Dike Design." International Journal of Environmental Research and Public Health 19, no. 24 (December 7, 2022): 16429. http://dx.doi.org/10.3390/ijerph192416429.

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Leakage accidents at chemical facilities have a negative impact on both the environment and human life, and the government has established and implemented regulations on dikes in order to minimize such accidents. However, the overtopping phenomenon in which chemicals overflow the dike due to catastrophic leakage requires additional safeguards. In this study, the mitigation effect was confirmed by simulating tanks and dikes using various deflector plates to minimize the effect of spilled chemicals. ANSYS Fluent 19.1, a computational fluid dynamics program, was used, and the overtopping effect was compared with a dike design that satisfies the safety regulations using a volume of fluid (VOF) model that analyzes multiphase flow through a surface tracking technique. Nitric acid and sulfuric acid were used in the study; they were selected because they are frequently involved in leakage accidents. In the event of a leak in a liquid tank, a dike with a deflector plate was very effective in reducing overtopping, and a deflector at a 45° angle was more effective than a 30° deflector. However, it is necessary to install additional safeguards at the joint between the dike and the deflection plate to withstand the force of the liquid.
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Kailash, Golecha, T. I. Eldho, and S. V. Prabhu. "Performance Study of Modified Savonius Water Turbine with Two Deflector Plates." International Journal of Rotating Machinery 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/679247.

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Savonius rotor is a vertical axis rotor with simple in design and easy to fabricate at lower cost. The rotation of the rotor is due to the drag difference between the advancing blade and returning blade. Net driving force can be increased by reducing the reverse force on the returning blade or increasing the positive force on the advancing blade. Former can be realized by providing a flow obstacle to the returning blade and latter can be realized by concentrating the flow towards the advancing blade. The objective of the present work is to identify the optimal position of the deflector plate (on advancing blade side) placed upstream to the flow which would result in increase in power generated by the rotor. Tests are conducted to identify the optimum position of the deflector plate on the advancing blade side in the presence of a deflector plate on the returning blade side at its optimum position. Results suggest that two deflector plates placed at their optimal positions upstream to the flow increase the coefficient of power to 0.35. This is significantly higher than the coefficient of power of 0.14 observed for the rotor without deflector plates.
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Iwasińska-Kowalska, Olga. "A SYSTEM FOR PRECISE LASER BEAM ANGULAR STEERING." Metrology and Measurement Systems 21, no. 1 (March 1, 2014): 27–36. http://dx.doi.org/10.2478/mms-2014-0003.

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Abstract A system for precise angular laser beam deflection by using a plane mirror is presented. The mirror was fixed to two supports attached to its edges. This article details the theoretical basis of how this deflector works. The spring deflection of a flat circular metal plate under a uniform axial buckling was used and the mechanical stress was generated by a piezoelectric layer. The characteristics of the deformation of the plate versus the voltage control of the piezoelectrics were examined and the value of the change resolution possible to obtain was estimated. An experimental system is presented and an experiment performed to examine this system. As a result, a resolution of displacement of 10-8 rad and a range of 10-5 rad were obtained.
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Gao, Guangjun, Yan Zhang, Fei Xie, Jie Zhang, Kan He, Jiabin Wang, and Yani Zhang. "Numerical study on the anti-snow performance of deflectors in the bogie region of a high-speed train using the discrete phase model." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 233, no. 2 (July 3, 2018): 141–59. http://dx.doi.org/10.1177/0954409718785290.

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In this paper, the three-dimensional unsteady Reynolds-averaged Navier-Stokes equations with an RNG double-equation turbulence model and a discrete phase model were used for the investigation of snow accumulation on the bogie of a high-speed train. Two kinds of deflector plates, one installed at the front end and the other at the rear end of the bogie, were proposed to reduce snow accumulation. The accuracy of the CFD methodology was validated against wind tunnel tests. The results showed that high-speed air will impact the plates where snow particles get accumulated. The snow covering on the bogie rarely drifts back into the bogie region with air. The amount of accumulating snow in the optimum models is reduced by 50.58% on average as compared to those in the original models. At the rear end of the bogie, the inclined deflector plate reduced snow accumulation by up to 10.91% compared to the vertical deflector plate.
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Escartí-Guillem, Mara S., Sergio Hoyas, and Luis M. Garcia-Raffi. "Deflector shape impact on aero-acoustic noise generation and propagation." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A222. http://dx.doi.org/10.1121/10.0016076.

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The vibroacoustic loading generated during the launch of space vehicles can cause the failure of electronic and mechanical components. Therefore, the prediction and mitigation of these vibroacoustic levels are crucial to improve the reliability of launchers and payload comfort. Because a properly designed flame deflector has the power to significantly reduce the acoustic pressure level, the aeroacoustics characteristics of diverse types of flame deflectors must be understood. Three different deflector geometries have been analysed: a wedge-type deflector, which is currently used on the VEGA rocket launch pad, a 30-degree inclined deflector, since new studies highlight its noise reduction capacity, and a flat deflector, since the impact on a flat plate is the simplest case of reflection. The sound generation and propagation in the launch platform full domain for each case were studied using dedicated computational fluid dynamics in BSC MareNostrum. To assess noise generation, the main shock waves were identified, and the evolution of the generated sound pressure was assessed. Moreover, the sound pressure levels at the fairing surface have been studied. Further research is focused right now on the use of an efficient solver running on graphics processing units that is capable of computing large-scale turbulence.
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Yu, Shao Zhen, Yi Jiang, Yan Li Ma, Yan Yan Ma, and Bo Wei Liu. "Simulation and Optimize Design for Deflector Plate of the Vehicle Mounted Vertically Thermal Launched Missile." Advanced Materials Research 459 (January 2012): 579–83. http://dx.doi.org/10.4028/www.scientific.net/amr.459.579.

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In this dissertation, academic analysis of the influence to deflector plate in gas jet field of a Vehicle-mounted Vertically Thermal Launched missile as well as simulation study. The finite volume method, a fully structured grid, three-dimensional N-S equation is used for the numerical simulation of the process during the missile launching. The two main factors: temperature and forces on the launcher is the standard we test a launching system. The temperature on the position we test will rise with the decreasing length of the deflector. Especially, when the length is near to the potential core, the temperature changed greatly. Also, the angles of the deflector under the same length have less impacted on the temperature field. However, the force on the deflector would be change greater than the temperature with the change of angles
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Verma, R. S., M. A. Jo, and A. S. Deora. "Forced Convection Across Horizontal Hot Cylinder Using Slotted Deflector Plate." Journal of The Institution of Engineers (India): Series C 94, no. 3 (July 2013): 275–79. http://dx.doi.org/10.1007/s40032-013-0075-z.

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Dissertations / Theses on the topic "DEFLECTOR PLATE"

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Steyn, Hermanus Johannes. "Particle deflection and plate-out dynamics in a helium stream." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2285.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2009.
ENGLISH ABSTRACT: In the primary circuit components of high temperature reactors, various unwanted particles have been found. These particles include, for example, graphite and silver- 110 (110mAg). The silver-110 (110mAg) particles are radioactive, with a half-life of 253 days. The presence of radioactive particles in the primary circuit components constitutes an unwanted maintenance problem from a radiation hazard point of view. The development of a method to remove these particles from the helium stream is therefore needed. This thesis consideres two possible methods of removing silver from the helium stream, namely laser ablation of microparticles and electrostatic precipitation. These methods require the generation of silver ions or charged particles, the deflection of these particles in a helium gas stream passing through an electric field and the subsequent plate-out of these particles onto deflection electrodes. To find a suitable method of generating ions, various methods to generate the silver ions were investigated and evaluated. These methods include existing ion sources, thermionic, field and photoelectric emission and laser ablation of microparticles. No existing ion sources could be found which could be utilised in helium at high pressure. From calculations it was concluded that thermionic, field and photoelectric emission could also not be used to raise the energy of the emitted electrons sufficiently to ionize silver in a helium flight path. These methods were found not to be feasible ion sources in helium at high pressures. However, laser ablation of microparticles was found to constitute a feasible technology. Laser ablation was successfully utilised by Nichols et al. (2000) to deflect silver nanoparticles in an electric field across a two bar helium stream. An apparatus, similar to the one developed by Nichols et al. (2000), was designed and built. The apparatus included a silver insertion mechanism and tests with this apparatus were called the microparticle tests. To determine the efficacy of the silver insertion mechanism, the microparticle tests were done without the use of a laser. It was found that a laser was not necessary as microparticles collected on both the deflection electrodes. Dielectrophoresis was proposed as a possible explanation for the deflection and the plate-out of the mcroparticles. To theoretically model the deflection of the silver particles, two models were proposed, namely the deterministic and the stochastic deflection models. The latter describes the deflection of atoms, ions and polarized particles by using probability theory. From this model it was found that the Brownian motion force is far larger that the force created by the polarizibility of the atom due to an electric field. The deterministic deflection model describes the deflection of larger particles in a continuum. From this model it was found that a silver microparticle with a radius of 3 mm in a helium stream with bulk velocity of 0.0198 m/s would deflect 4.6 mm per helium flight path length of 140 mm. From these calculation it was found that the apparatus which had been built was not long enough to deflect and plate-out all the silver microparticles. The dielectrophoresis force on nanoparticles cannot be calculated, as the theory of dielectrophoresis is only valid for particles with diameter larger than 1 mm. Changes were therefore made to the apparatus to generate nanoparticles as their mobility is larger than that of microparticles. The nanoparticles were created by means of an arc discharge in helium; therefore tests with this modified apparatus were called the arc discharge test. The nanoparticles so created, deflected and deposited on both deflection electrodes. With the use of an atomic force microscope some of the particles could be classified as microparticles. According to the deterministic deflection model they should not have deflected. Combined with the fact that oxygen was in the plasma, due to the oxidation of the electrodes, a hypothesis of bipolar charging was thus proposed. The deterministic deflection model was used and supplemented with field and diffusion charging calculations, to support this hypothesis. A reasonable correlation between the theoretical model and this experimental results was obtained. Based on the arc discharge test, electrostatic precipitation was proposed as the indicated means of scrubbing silver and other particles such as graphite from a helium stream. It is recommended that a new apparatus be built and that the deterministic deflection model be used to predict the deflection of the particles. With this apparatus the uncertainties of breakdown voltage, the effect of thermionic emission and the size of the particles, all of which have been identified as being important, can then also be determined.
AFRIKAANSE OPSOMMING: In die primêre komponente van die kringloop van hoë temperatuurreaktors, was verskillende ongewenste partikels soos grafiet en silwer-110 (110mAg) teenwoordg. Silwer- 110 (110mAg) is radioaktief met ’n halfleeftyd van 253 dae. Vanuit ’n radiasie-risiko oogpunt word daar onderhoudsimplikasies geskep deur die teenwoordigheid van radioaktiewe partikels in die primêre komponente. Die ontwikkeling van ’n metode om hierdie partikels uit die heliumstroom the verwyder was dus nodig. Hierdie tesis ondersoek twee moontlike metodes van verwydering van silwer uit die heliumstroom, naamlik laser-ablasie van mikropartikels en elektrostatiese presipitasie. Hierdie metodes benodig die generasie van silwer ione of gelaaide partikels, die defleksie daarvan in ’n heliumstroom wat deur ’n elektriese veld vloei en die platering van die partikels op defleksie elektrodes. Om ’n geskikte metode the vind wat ione genereer was, verskillende metodes om die silwer ione te verkry, ondersoek en geëvalueer. Hierdie metodes sluit in bestaande ioonbronne, termioniese, veld en fotoëlektriese emissie en laser-ablasie van mikropartikels. Geen ioonbronne was gevind wat gebruik kan word in helium by hoë druk nie. Die gevolgtrekking is gemaak vanaf berekeninge dat termioniese, veld en fotoëlektriese emissie ook nie gebruik kan word om die energie van die voortgebronge elektrone genoeg te verhoog om silwer in ’n heliumstroom te ioniseer nie. Daar was gevind dat hierdie metodes nie geskik is as ioonbronne in helium by hoë druk nie. Daarenteen was laser-ablasie van mikropartikels gevind om ’n geskikte tegnologie voor te stel. Laser-ablasie van mikropartikels was suksesvol deur Nichols et al. (2000) gebruik om silwer nanopartikels te deflekteer in ’n elektriese veld oor helium van twee bar. ’n Apparaat soortgelyk aan Nichols et al. (2000) se eksperiment, was dus ontwerp en gebou. Die apparaat het ’n silwer insitmeganisme bevat en toetse met hierdie apparaat was die mikropartikel toetse genoem. Om die effektiwiteit van die insitmeganisme te bepaal, was toetse gedoen sonder opstelling van die laser. Daar was eksperimenteel gevind dat die laser nie nodig was nie, omdat mikropartikels op beide defleksie elektrodes geplateer het. Dielektroforese was voorgestel as ’n moontlike verduideliking vir deflektering en platering vir die silwer mikropartikels. Om die defleksie van silwer partikels teoreties te moduleer was twee modelle voorgestel, naamlik deterministiese en stogastiese defleksiemodelle. Laasgenoemde beskryf die defleksie van atome, ione en gepolariseerde partikels deur gebruik te maak van waarskynlikheidsteorie. Die stogastiese defleksiemodel dui aan dat die Brownian bewegingskrag veel groter is as die krag wat geskep word deur die polarisasie van ’n atoom as gevolg van ’n elektriese veld. Die deterministiese defleksiemodel beskryf die defleksie van groter partikels in ’n kontiuum. Met hierdie model was gevind dat silwer mikropartikels met ’n radius van 3 mmin ’n heliumstroom van snelheid van 0.0198 m/s, 4.6 mm sal deflekteer per 140 mm van heliumstroom lengte. Dit bewys dat die apparaat wat gebou was, se lengte onvoldoende was om al die silwer mikropartikels te deflekteer en te laat neerslaan. Die dielektroforese krag van nanopartikels kan nie uitgewerk word nie, omdat die dielektroforese model slegs geldig is vir partikels groter as 1 mm. Veranderings was dus aan die apparaat gemaak om nanopartikels te genereer omdat hul mobiliteit hoër is as die van mikropartikels. Die nanopartikels was geskep deur gebruik van ’n boogontlading in helium; daarom was toetse met hierdie gemodifiseerde apparaat die boogontladingstoets genoem. Die nanopartikels wat so geskep was, het gedeflekteer en het op beide elektrodes neergeslaan. Met die gebruik van ’n atomiese krag mikroskoop was dit gevind dat sommige van hierdie partikels mikropartikels was. Volgens die deterministiese defleksiemodel moes hul nie gedeflekteer het nie. Gekombineerd met die feit dat daar, weens oksidasie van die elektrodes, suurstof in die plasma was, was ’n hipotese van bipolêre lading voorgestel. Die deterministiese defleksiemodel is saam met die veld- en diffusielading gebruik om hierdie hipotese te staaf. ’n Redelike korrelasie tussen die teoretiese en eksperimentele data was gevind. Gebaseer op die boogontladingstoets, was elektrostatiese presipitasie voorgestel as ’n metode om silwer en ander partikels soos grafiet uit ’n heliumstroom te verwyder. Daar word voorgestel dat ’n nuwe apparaat gebou word en dat die deterministiese defleksiemodel gebruik word vir die bepaling van defleksie van die partikels. Deur die nuwe apparaat te gebruik kan die onsekerhede van deurslagspanning, effek van termioniese emissie en grootte van die partikels wat geidentifiseer is as belangrik, ook bepaal word.
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Drinali, Hayat. "Full-range axisymmetric elasto-plastic large deflection of circular and annular plates under transverse, in-plane and combined loading." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254094.

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Abayakoon, Sarath Bandara Samarasinghe. "Large deflection elastic-plastic analysis of plate structures by the finite strip method." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26946.

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A solution procedure based on the finite strip method is presented herein, for the analysis of plate systems exhibiting geometric and material non-linearities. Special emphasis is given to the particular problem of rectangular plates with stiffeners running in a direction parallel to one side of the plate. The finite strip method is selected for the analysis as the geometry of the problem is well suited for the application of this method and also as the problem is too complicated to solve analytically. Large deflection effects are included in the present study, by taking first, order non-linearities in strain-displacement relations into account. Material non-linearities are handled by following von-Mises yield criterion and associated flow rule. A bi-linear stress-strain relationship is assumed for the plate material, if tested under uniaxial conditions. Numerical integration of virtual work equations is performed by employing Gauss quadrature. The number of integration points required in a given direction is determined either by observing the individual terms to be integrated or by previous experience. The final set of non-linear equations is solved via a Newton-Raphson iterative scheme, starting with the linear solution. Numerical investigations are carried out by applying the finite strip computer programme to analyse uniformly loaded rectangular and I beams with both simply supported and clamped ends. Displacements, stresses and moments along the beam are compared with analytical solutions in linear analyses and with finite element solutions in non-linear analyses. Investigations are also extended to determine the response of laterally loaded square plates with simply supported and clamped boundaries. Finally, a uniformly loaded stiffened panel is analysed and the results are compared with finite element results. It was revealed that a single mode in the strip direction was sufficient to yield engineering accuracy for design purposes, with most problems.
Applied Science, Faculty of
Civil Engineering, Department of
Graduate
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Potarowicz, Adrian, and Moghadam Seyed Mazdak Hosseini. "Spatial vibration measurements : operating deflection analysis on the example of a plate compactor." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-78781.

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The operating motion of a ground compactor uses high power vibrations to improve mechanical properties of a compacted ground. This motion gives a good base for the vibration analysis with an aid of Signal Processing. In this thesis, the motion of a bottom plate in a compactor is of the main interest. The thesis concerns usage of two main spectral analyzing tools, Power Spectrum estimators and Power Spectral Density estimators, presenting advantages and disadvantages in the application of a vibration analysis. Moreover, an influence of two window applications, a Flattop window, and a Hanning window, is described in relation to both analyzing approaches. The results present problems that occur when a vibration with a present modulated frequency is analyzed and how a Power Spectral Density estimator arise in a more consistent estimate over analyzed vibration spectrum. What is more, an Ordinary Deflection Shapes for a simplified bottom plate model, under different motion excitations, are presented at the end of this thesis, giving a better view of the operational motion of an analyzed system.
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Carter, Paul M. "A multigrid method for determining the deflection of lithospheric plates." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27854.

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Various models are currently in existence for determining the deflection of lithospheric plates under an applied transverse load. The most popular models treat lithospheric plates as thin elastic or thin viscoelastic plates. The equations governing the deflection of such plates have been solved successfully in two dimensions using integral transform techniques. Three dimensional models have been solved using Fourier Series expansions assuming a sinusoidal variation for the load and deflection. In the engineering context, the finite element technique has also been employed. The current aim, however, is to develop an efficient solver for the three dimensional elastic and viscoelastic problems using finite difference techniques. A variety of loading functions may therefore be considered with minimum work involved in obtaining a solution for different forcing functions once the main program has been developed. The proposed method would therefore provide a valuable technique for assessing new models for the loading of lithospheric plates as well as a useful educational tool for use in geophysics laboratories. The multigrid method, which has proved to be a fast, efficient solver for elliptic partial differential equations, is examined as the basis for a solver of both the elastic and viscoelastic problems. The viscoelastic problem, being explicitly time-dependent, is the more challenging of the two and will receive particular attention. Multigrid proves to be a very effective method applicable to the solution of both the elastic and viscoelastic problems.
Science, Faculty of
Mathematics, Department of
Graduate
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Salehi, Manouchehr. "Elasto-plastic large deflection response of radially stiffened circular, sector and annular sector plates." Thesis, Lancaster University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306022.

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Bencharif, Nasr-Eddine. "Linear and nonlinear deflection analysis of thick rectangular plates using finite differences." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/10984.

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Variational methods are widely used for the solution of complex differential equations in mechanics for which exact solutions are not possible. The finite difference method, although well known as an efficient numerical method was applied in the past only for the solution of linear and nonlinear thin plates. In the present study, the suitability of the method for the solution of nonlinear deflection of thick plates is studied for the first time. While there is major differences between small deflection and large deflection plate theories, the former can be treated as a particular case of the latter, when the centre deflection of the plate is less than or equal to 0.2-0.25 of the thickness of the plate. The finite difference method as applied here is a modified finite difference approach to the ordinary finite difference method generally used for the solution of thin plate problems. In this thesis thin plates are treated as a particular case of the corresponding thick plate when the boundary conditions of the plates are taken into account. The method is first applied to investigate the deflection behaviour of square clamped and simply supported square isotropic thick plates. After the validity of the method is established, it is then extended to the solution of rectangular thick plates of various aspect ratios and thicknesses. Generally, beginning with the use of a limited number of mesh sizes for a given plate aspect ratio and boundary conditions, a general solution of the problem including the investigation of accuracy and convergence was extended to rectangular thick plates by providing more detailed functions satisfying the rectangular mesh sizes generated automatically by the programme. Whenever possible results of the present method are compared with the existing solutions in the technical literature obtained by much more laborious methods and close agreements are found. Significant amounts of results presented herein are not currently available in the technical literature for various plate aspect ratios and Poisson's ratios. The submatrices involved in the formation of the finite difference equations from the governing differential equations forming the general system are generated directly by the computer programme. The subroutine SOLINV from the second directed method as developed and illustrated in Chapter V takes care of the inversion of the general matrix. The subroutine developed by the author has been proven to be more efficient than the former methods known for the computation of linear simultaneous equations [61]. Simplicity in formulation and quick convergence are the obvious advantages of the finite difference formulation developed here for small and large deflection analysis of thick plate in comparison with other numerical methods requiring extensive computer facilities.
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Lee, Seung Joon. "Nonlinear analysis of smart composite plate and shell structures." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2218.

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Theoretical formulations, analytical solutions, and finite element solutions for laminated composite plate and shell structures with smart material laminae are presented in the study. A unified third-order shear deformation theory is formulated and used to study vibration/deflection suppression characteristics of plate and shell structures. The von K??rm??n type geometric nonlinearity is included in the formulation. Third-order shear deformation theory based on Donnell and Sanders nonlinear shell theories is chosen for the shell formulation. The smart material used in this study to achieve damping of transverse deflection is the Terfenol-D magnetostrictive material. A negative velocity feedback control is used to control the structural system with the constant control gain. The Navier solutions of laminated composite plates and shells of rectangular planeform are obtained for the simply supported boundary conditions using the linear theories. Displacement finite element models that account for the geometric nonlinearity and dynamic response are developed. The conforming element which has eight degrees of freedom per node is used to develop the finite element model. Newmark's time integration scheme is used to reduce the ordinary differential equations in time to algebraic equations. Newton-Raphson iteration scheme is used to solve the resulting nonlinear finite element equations. A number of parametric studies are carried out to understand the damping characteristics of laminated composites with embedded smart material layers.
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Yamine, Araar. "Application of Galerkin method in deflection, stability and vibration of rectangular clamped plates of variable thickness." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5263.

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Bencharif, Nasr-Eddine. "Application of finite difference method to the deflection of clamped and simply supported thick rectangular plates." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5407.

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Books on the topic "DEFLECTOR PLATE"

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Craig, L. D. Deflections of a uniformly loaded circular plate with multiple support points. [Marshall Space Flight Center], Ala: National Aeronautics and Space Administration, Marshall Space Flight Center, 1999.

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Bert, Charles Wesley. Nonlinear deflection of rectangular plates by differential quadrature. [S.l.]: [s.n.], 1988.

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Ayowole, Oyediran Abraham, and George C. Marshall Space Flight Center., eds. Free vibration of rectangular plates with a small initial curvature: Final report. Marshall Space Flight Center, Ala: Marshall Space Flight Center, 1988.

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United States. National Aeronautics and Space Administration., ed. Deflection of a circular liquid jet on a flat plate perpendicular to the flow direction. Washington D.C: National Aeronautics and Space Administration, 1988.

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Riley, Paul D. Paleomagnetic evidence of in situ block rotations south of the Arica deflection and oroclinal bending north of Arica ; Implications for the tectonic evolution of the central South American Andes. 1992.

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Levin, Frank S. Spin ½ and the Periodic Table. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198808275.003.0011.

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Some major quantal developments are described in Chapter 10. The Stern-Gerlach experiment is encountered first, wherein a beam of silver atoms is deflected by a magnetic field, leading to a pair of traces on a detecting plate. Next is the proposal that electrons have a new attribute known as spin, used to explain the Stern-Gerlach result, thereby confirming the validity of this new attribute. To account for the structure of the periodic table, the central-field approximation is introduced. In it, electrons in an atom are treated like those in hydrogen, except that they have four not three quantum numbers, the fourth related to spin. The Pauli Exclusion Principle requires that no four can be the same for any electron in the atom, a feature that explains the occurrence of shells in the periodic table. The electronic structure of various atoms is stated, with silver being a giant spin ½ system.
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O'Donnell, Ian. Justice, Mercy, and Caprice. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198798477.001.0001.

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Justice, Mercy, and Caprice is a work of criminal justice history that speaks to the gradual emergence of a more humane Irish state. It is a close examination of what can be learned from the National Archives of Ireland about the decision to grant clemency to men and women sentenced to death between the end of the civil war in 1923 and the abolition of capital punishment in 1990. Frequently, the decision to deflect the law from its course was an attempt to introduce a measure of justice to a system where the mandatory death sentence for murder caused predictable unfairness and undue harshness. In some instances the decision to commute a death penalty sprang from merciful motivations. In others it was capricious, depending on factors that should have had no place in the government’s decision-making calculus. The custodial careers of those whose lives were spared repay scrutiny. Women tended to serve relatively short periods in prison but were often transferred to a religious institution, such as a Magdalen laundry, where their coercive confinement continued, occasionally for life. Men, by contrast, served longer in prison but were discharged directly to the community. Political offenders, such as members of the IRA, were either executed hastily or, when the threat of capital punishment had passed, incarcerated for extravagant periods. The issues addressed are of continuing relevance for countries that retain capital punishment as the ultimate sanction.
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Book chapters on the topic "DEFLECTOR PLATE"

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Ugural, Ansel C. "Large Deflection of Plates." In Plates and Shells, 355–72. Fourth edition. | Boca Raton : CRC Press, [2018] | Series: Applied and computational mechanics | Original edition published under the title: Stresses in plates and shells / Ansel C. Ugural. |Includes bibliographical references and index.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315104621-12.

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Kythe, Prem K. "Finite Deflection of Plates." In Fundamental Solutions for Differential Operators and Applications, 292–306. Boston, MA: Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-4106-5_13.

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Abrahams, I. D., and A. M. J. Davis. "Deflection of a Partially Clamped Elastic Plate." In IUTAM Symposium on Diffraction and Scattering in Fluid Mechanics and Elasticity, 303–12. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-0087-0_33.

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Sinha, Gourav Prasad, Bipin Kumar, and K. Priya Ajit. "Deflection of Thin Plate Through Isogeometric Analysis." In Advances in Manufacturing, Automation, Design and Energy Technologies, 541–50. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1288-9_56.

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Lam, C. L., M. J. Lalor, T. P. Leung, and D. R. Burton. "Deflection of Orthotropic Plates With Defects." In Computational Mechanics ’95, 2352–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79654-8_391.

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Szyszkowski, W., and P. G. Glockner. "Time Deflection Behaviour of Ice Plates." In Inelastic Behaviour of Plates and Shells, 113–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82776-1_6.

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Ueda, Y., H. Murakawa, and H. Masuda. "Reissner-Mindlin Plate Element for Large Deflection Problem." In Computational Mechanics ’86, 621–26. Tokyo: Springer Japan, 1986. http://dx.doi.org/10.1007/978-4-431-68042-0_85.

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Turvey, G., and M. Osman. "Large Deflection Initial Failure of Laminated Rectangular Plates." In Developments in the Science and Technology of Composite Materials, 321–31. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1123-9_44.

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Gordaninejad, Faramarz. "Large Deflection of Anisotropic Bimodular Composite Material Plates." In Composite Structures 4, 152–61. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3455-9_11.

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Raamachandran, J. "Large Deflection of Plates Using Charge Simulation Method." In Computational Mechanics ’86, 557–62. Tokyo: Springer Japan, 1986. http://dx.doi.org/10.1007/978-4-431-68042-0_75.

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Conference papers on the topic "DEFLECTOR PLATE"

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Zhang, Yuanqiao, Jun Li, Xin Yan, and Zhigang Li. "Experimental and Numerical Investigations on Leakage Flow Characteristics of Two Kinds of Brush Seals." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76235.

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The leakage characteristics of interference and clearance brush seals were experimentally measured and numerically simulated in this paper. The leakage coefficients of the brush seals without a deflector plate at different pressure differentials were firstly measured. The effect of deflector plate and clearance on seal performance and the detailed flow field of the brush seal were numerically investigated using three-dimensional Reynolds-Averaged Navier-Stokes (RANS) solutions coupled with a Non-Darcian Porous Medium model. In addition, this study experimentally investigated the hysteresis characteristic of interference and clearance brush seals without deflector plates, and presented detailed investigations on the blow down effect of clearance brush seal using Computational Fluid Dynamics (CFD) as mentioned above and Finite Element Method (FEM) approaches. The obtained results show that the leakage coefficient and blow-down effect of the brush seal with a deflector plate is lower than that of the brush seal without a deflector plate at the same pressure difference and the clearance between the bristle pack and shaft will increase the leakage coefficient significantly. The different hysteresis characteristics of interference and clearance brush seals are illustrated and discussed.
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Ahmed, Ali, Ajmal Baig, Syed Bilal, and Salimuddinn Zahir. "CFD analysis of supersonic jet impingement on axisymmetric deflector plate." In 2012 International Bhurban Conference on Applied Sciences and Technology (IBCAST). IEEE, 2012. http://dx.doi.org/10.1109/ibcast.2012.6177550.

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Pohl, Julien, Jeffrey A. Dixon, and Vincenzo Fico. "Turbine Stator Well Cooling: Improved Geometry Benefits." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42658.

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Nowadays, it is common practice to expose engine components to air temperatures exceeding the thermal material limit in order to increase the overall engine performance and to minimise the engine specific fuel consumption (SFC). To avoid the overheating of the materials and thus the reduction of the component life, an internal flow system is designed to cool the critical engine parts and to protect them. As the coolant flow is bled from the compressor and not used for the combustion the amount of coolant is aimed to be minimised as much as possible to preserve the overall engine performance. Experiments as well as numerical simulations have shown that with the use of a deflector plate, the cooling flow is fed more directly into the disc boundary layer, allowing more effective use of less cooling air, leading to an improved engine efficiency. In this paper, the benefits of the use of a stationary deflector plate inside a turbine stator well (TSW) are presented. So far unpublished experimental data obtained from tests carried out in a two-stage turbine rig are presented. The main objective of this research has been to produce reliable methods for predicting the effects of geometry changes in this type of engine cavity, with a view to optimising the cooling flows required to maintain component integrity and life. Therefore, a numerical methodology is presented and validated against the experimental data. Steady and unsteady computational fluid dynamics (CFD) calculations of a sector model are used to determine whether fluid side flow distributions and heat transfer can be adequately represented, as well as to expose the limits of these approaches. The main annulus geometry is meshed with a multi-block structured mesh using the in-house code PADRAM. The cavity geometry is meshed once with a multi-block structured mesh using the commercial tool ANSYS ICEM and once with an unstructured mesh using the in-house code PADRAM. The CFD calculations are carried out with the commercial code FLUENT from ANSYS as well as the in-house code HYDRA. Finally, for the cavity with the deflector plate and no net ingestion, the steady state solution of the CFD is coupled to a finite element analysis (FEA) model created in the in-house code SC03 in order to take the conjugate effects into account. With this method the final non-adiabatic flow field inside the cavity as well as the final metal temperatures are obtained, which again are compared against thermocouple measured data in order to evaluate the accuracy of the numerical prediction method.
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Kakati, Biraj Kumar, Avijit Ghosh, and Anil Verma. "Graphene Reinforced Composite Bipolar Plate for Polymer Electrolyte Membrane Fuel Cell." In ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/fuelcell2011-54661.

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Composite bipolar plates for polymer electrolyte membrane fuel cell (PEMFC) were developed by compression molding technique using vinyl ester resin as a binder and natural graphite, carbon black, and carbon fiber as conductive reinforcements. The developed bipolar plates were characterized for electrical conductivity, flexural strength, deflection at mid-span, hydrogen permeability, and morphology. The in-plane and through-plane electrical conductivities of the composite bipolar plate (VER:25%;CB:5%;CF:5%;NG:65%) were 355.05 and 95.96 S·cm−1, respectively. The flexural strength of the same bipolar plate was 53.50 MPa with a deflection of 5.37%. The hydrogen permeability of the bipolar plate was in the order of 10−9 cm3·cm−1·s−1 at 50°C. The overall properties of the composite bipolar plate were found to achieve the benchmark set by USA-Department of Energy. However, the through-plane electrical conductivity of the above composite was edge below the target value. Therefore, graphene, being one of the most electrical conductive materials, has been reinforced into the composite bipolar plate. The results were very encouraging as 1% graphene reinforcement increased the in-plane and through-plane electrical conductivities of the bipolar plate by around 6 and 35%, respectively. The performance of a PEMFC was evaluated using the developed bipolar plate in in-situ condition.
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Chao, Paul C. P., and Chi-Wei Chiu. "Precise Prediction on Pull-In Instability of a Deformable Micro-Plate Actuated by Distributed Electrostatic Force and Approximate Closed-Form Solutions." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82241.

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This study is dedicated to perform nonlinear asymptotic analysis based on the continuous thin plate model of MEMS capacitive sensor/actuator in order to predict the pull-in voltages/positions more precisely than past works. In these past studies, only discrete models without residual stress were considered. A sensor/actuator is considered in structure of two parallel electrostatically-charged flexible square plates — one thin plate in persistent vibrations to reflect external pressure and another thick plate in relative still as the backplate. The dynamic model in the form of the partial differential equation for the parallel plates is first established based on the balance among plate flexibility, residual stress and electrostatic forces. Assuming harmonic deflection for the vibrating plate clamped on boundaries, Galerkin method is used to decompose the established system p.d.e. into discrete modal equations. Solving the discrete modal equations, plate deflection can be obtained. The pull-in position is next solved from the condition that as the pull-in occurs the electrostatic attraction force on the deflected plate exceeds the elastic restoring force by the deflected plate. It is found from analysis results for some case study that the pull-in position is 1.66 μm with air gap of 3.75 μm. This predicted pull-in position is smaller than the predict position from past works, two-thirds of the gap. In addition to theoretical analysis, experiments are also conducted to verify the correctness of the established model.
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Chiang, Fu-Pen, X. Yu, D. Z. Yun, and B. H. Dong. "Generating real-time curvature contours with shearing interferometry and Talbot effect." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.tus2.

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In the small deflection theory of thin plates, the bending stress is directly proportional to the curvature of the deflected plate surface. Most optical methods, such as holographic interferometry and shadow moire, give deflection contours which have to be differentiated twice to yield curvature values. Since numerical differentiation is intrinsically error prone, it is important that it be avoided whenever possible. In this paper we present a technique whereby real-time curvature fringes of a mirrored specimen surface can be obtained with a simple Ronchi grating through the use of shearing interferometry and the Talbot effect. It is done by illuminating the deflected specimen surface with a coherent beam through the grating and observing the resulting wave at a certain distance away. If the distance between the specimen surface and the observation plane is one of the Talbot distances and the resulting wave is the sum of only zeroth-order and two first-order diffraction waves, a high quality fringe pattern representing curvature contours is obtained. A sensitivity of 2 × 10−6/mm/ fringe has been achieved. Both theoretical analysis and experimental demonstration are presented.
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Zhang, Mohan, Bo Yin, and Guowei Yang. "Numerical Simulation on Application of Airfoil Cross-Section Rod of Pantograph." In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-87608.

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Abstract Pantograph is a kind of structure composed of many rods parts. Due to its complex structure, the drag of pantograph is relatively high in the drag of the whole high speed train. In order to reduce the aerodynamic drag, many scholars put forward methods such as adding a deflector and installing a baffle plate on the roof of the train, but these methods have little effect on improving the lift force of the pantograph. Regarding this situation, this paper applies airfoil section (naca0012) to the panhead section of the pantograph strips. Knuckle-downstream and knuckle-upstream operating conditions with three running speeds (300km/h, 350km/h and 400km/h) are considered. The drag and lift forces are compared with those of regular pantograph strip in order to confirm the improvement of aerodynamic performance. It indicated that the optimized panhead pantograph has a better performance in drag and lift forces under all the conditions except the lift force rises 14 percent at knuckle-upstream.
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Hari, Yogeshwar. "Finite Element Analysis of a Slab Tank." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2686.

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The objective of this paper is to verify design of a slab tank. The slab tank is to store various criticality liquids used in today’s industry. The initial over all dimensions of the slab tank are determined from the capacity of the stored liquids. The design function is performed using the flat plate theory. The slab tank design is broken up into (a) two long side members, (b) two short side members, (c) top head, and (d) bottom head. It is supported from the bottom at a height by a rectangular plate enclosure. It is anchored at the rectangular plate enclosure. The deflection of the linear space is a critical requirement. Stresses are usually acceptable because the requirement is on the deflection. For vacuum condition the long side plates will deflect inwards. Flat plate equations are used to determine deflection and stress. For internal pressure condition the design pressure consists of working internal pressure plus static head pressure. For this the long side plates will deflect outwards. The heads are designed for internal pressure at the bottom where the pressure is the maximum. The designed dimensions are used to recalculate the stresses for the slab tank. The dimensioned slab tank is modeled using STAAD III finite element software. The stresses from the finite element software are compared to the stresses obtained from recalculated stresses obtained using flat plate theory. The difference in the stress values is explained. This paper’s main objective is to compare the flat plate theory to the finite element analysis. The design is found to be safe for the specific configuration considered.
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Nasrekani, Farid Mahboubi, Aniket Raj, and Manav Kumar. "Stress and buckling analysis of multilayered composite plates with different cut-outs using finite element method." In International Conference on Mechanical, Automotive and Mechatronics Engineering. Aksaray: ECER, 2023. http://dx.doi.org/10.53375/icmame.2023.110.

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This study is a numerical analysis where multiple layers of plates with different orientations were combined to form a composite plate. Within this study, the concept of in-plane tensile loading and buckling upon an orthotropic multi-layered plate with different cut-outs is discussed. The finite element method is used to conduct modeling and analysis of the composite plate where the plate has different geometric shape cut-outs to test for parameters such as deflection, stress-strain distribution, buckling, and other effects of cut-outs on the cross-section of the plate.
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Navazi, H. M., H. Haddadpour, and M. Rasekh. "An Analytical Solution for Nonlinear Cylindrical Bending of Functionally Graded Plates." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95252.

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In this paper, the nonlinear cylindrical bending of a functionally graded plate is studied. The material properties of the plate are assumed to be graded continuously in the direction of thickness. The variation of the material properties follows a simple power-law distribution in terms of the volume fractions of constituents. The von Karman strains are used to construct the nonlinear equilibrium equations of the plates subjected to in-plane and transverse loadings. The governing equations are reduced to linear differential equation with nonlinear boundary conditions yielding a simple solution procedure. The results show that the functionally graded plates exhibit different behavior from plates made of pure materials in cylindrical bending. Also, it is shown that the linear plate theory is inadequate for analysis of FG plate even in the small deflection range.
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Reports on the topic "DEFLECTOR PLATE"

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Jain, Prashant K., James D. Freels, and David Howard Cook. 3D COMSOL Simulations for Thermal Deflection of HFIR Fuel Plate in the "Cheverton-Kelley" Experiments. Office of Scientific and Technical Information (OSTI), August 2012. http://dx.doi.org/10.2172/1047622.

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FATIGUE TESTS OF COMPOSITE DECKS WITH MCL CONNECTORS. The Hong Kong Institute of Steel Construction, December 2022. http://dx.doi.org/10.18057/ijasc.2022.18.4.7.

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Full-scale fatigue tests were performed on three composite decks with the MCL (modified clothoid) connectors to investigate their fatigue performance. Fatigue life and failure mode of the composite bridge decks were explored by measuring the specimens with three different stress amplitudes. The deflection, strain, carrying capacity, and stiffness degradation of the composite decks were measured and analyzed in the test. In addition, parameter analysis was performed using finite-element method in this study. Results showed that the mechanical performance of the composite decks accorded with the plane-section assumption under constant amplitude load, and the fatigue failure mode of the composite decks was the local fracture of the bottom steel plate. The stiffness degradation law and S-N curve were obtained in this study. Moreover, the concrete slab depth had a remarkable effect on the fatigue performance of the composite decks.
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