Дисертації з теми "STEEP ROAD"
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Partington, Mark. "The effectiveness of polyacrylamide in providing short-term erosion control on steep slopes /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80348.
Повний текст джерелаThe study results suggest that PAM provided no statistically significant erosion control after natural rainfall on a loam soil. In the rainfall simulation experiments PAM applied at both 10 and 20 kg/ha significantly reduced soil erosion (by 75 and 77%) and the turbidity of runoff water (by 99%). PAM application at 10 kg/ha significantly increased grass densities (by 109%) compared with the control plots. However, PAM applied at 20 kg/ha provided no significant increase in grass density compared with the control.
Weikle, Belinda M. "Preliminary investigation of energy dissipation at culvert outlets using a riprap step." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1280.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains ix, 168 p. : ill. (some col.) Vita. Includes abstract. Includes bibliographical references (p. 148-167).
Mäkikyrö, M. (Marko). "Converting raw materials into the products–Road base material stabilized with slag-based binders." Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514272528.
Повний текст джерелаZia, Seiar Ahmad. "The effect of different road load implementation strategies on fuel economy of USPS step vans." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10375.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains xii, 92 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 79-81).
Knobel, Christian. "Optimal control allocation for road vehicle dynamics using wheel steer angles, brake, drive torques camber angles." Düsseldorf VDI-Verl, 2009. http://d-nb.info/992593425/04.
Повний текст джерелаMendroková, Magda. "Most v obci Návsí přes řeku Olši." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226070.
Повний текст джерелаWinsteen, Albin Moran, and Haleh Nezamabadi. "One step further on the road to cultural diversity : - Implementing ethnic diversity among managers in Ericsson." Thesis, Stockholm University, School of Business, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6455.
Повний текст джерелаThe aim of this study is to find out what keeps the foreign workers in Ericsson from achieving leading roles in the organization. The low presentation of the immigrants in Ericsson’s management team compared to the proportion of immigrants in lower positions, suggests that there might be a glass ceiling in the organization. By examining the existing obstacles that non-Swedish employees at Ericsson face in getting into the management team, we can come up with solutions that can make it easier to overcome these barriers. In order to find out these difficulties, fourteen interviews have been conducted with four groups of respondents: Immigrant managers, Immigrant employees, Swedish managers and Swedish employees. The results of these qualitative interviews are then analyzed to reach to a conclusion and the possible solutions to resolve these difficulties. These different groups have given different perspectives in looking at this complex phenomenon. We asked about the factors that were assumed to be the main problems such as: society’s culture, deficiency in recognition of competence, lack of contact network, lack of communication skills, internal factors and finally the organizational factors. The results proved that all these factors can affect the possibilities for career advancement for immigrant employees in Ericsson in some degree, but the most visible factors were the culture, lack of contact network, and internal factors. Therefore the organization can resolve these difficulties by focusing on increasing diversity awareness and training, helping the foreign employees form contacts using various strategies.
Bradley, David. "Occupational health and safety in the Scottish steel industry, c.1930-1988 : the road to 'its own wee empire'." Thesis, Glasgow Caledonian University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570877.
Повний текст джерелаKuthy-Saenger, Juan Arturo. "Comparison study of the savings between a single and a double step toll systems." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1899.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains x, 48 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 41-42).
Campbell, Peter Cameron. "Application of microstructural engineering to the controlled cooling of steel wire rod." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29065.
Повний текст джерелаApplied Science, Faculty of
Materials Engineering, Department of
Graduate
Gillström, Peter. "Alternatives to pickling; preparation of carbon and low alloyed steel wire rod /." Örebro : Örebro universitetsbibliotek, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-376.
Повний текст джерелаMorales, Franklin R. "Magnesium and calcium rod injection for desulphurization of steel and hot metal." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61923.
Повний текст джерелаCorreard, Gilvan Cesar de Castro [UNESP]. "Projeto de uma roda para comporta vagão usando elementos finitos." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/97100.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O objetivo desta pesquisa foi apresentar um método de análise para a solução de problemas de contato por elementos finitos e o cálculo dos componentes mecânicos que fazem parte do projeto de uma roda de aço. Foi demonstrado passo a passo à execução de um cálculo analítico da roda de uma Comporta Vagão, calculando as cargas radial e axial presentes, verificando a tensão de Hertz, as tensões localizadas no cubo da roda, as tensões atuantes no eixo e a seleção do rolamento. Após esta etapa retiraram-se os parâmetros iniciais que foram utilizados no cálculo analítico para buscar o cálculo por elementos finitos. Assim, foram definidas as superfícies de contato, a geometria dos componentes, a malha, as restrições, as condições de contorno e por fim a análise dos resultados encontrados antes e após o projeto. Dessa maneira, podê-se determinar com precisão os pontos de concentração de tensão para eliminação as falhas. Com a busca deste cálculo, usando a análise por Elementos Finitos, respaldado pelo cálculo analítico, foi possível reduzir o diâmetro da roda para obter ganhos em massa para este tipo de equipamento que usa uma quantidade alta de rodas (acima de 100 rodas), sem alteração da confiabilidade das peças durante seu funcionamento.
The objective of this research was to present an analysis method for the solution of contact problems for finite elements and the calculation of the mechanical components that are part of the project of a steel wheel. It was demonstrated step by step the execution of an analytic calculation of the wheel of a Fixed Wheel Gate, calculating the radial and axial loads present, verifying the Hertz pressure, the concentrated stresses in the hub of the wheel, the acting stresses in the shaft and hub, and the selection of the roller bearings. After this stage the initial parameters were used in the analytic calculation in order to obtain the calculation using finite elements. After this, it was defined the contact surfaces, the geometry of the components, the mesh, the restrictions, the real constraints and finally the analysis of the results found before and after the project. After this calculation, the other analysis was established in order to determine the points of concentration stress accurately for the elimination of fails. In order to obtain the calculation, using Finite Elements, by the analytic calculation it was possible to reduce the diameter of the wheel to obtain earn in mass for this type of equipment that uses a high amount of wheels (above 100 wheels), without alteration of the reliability of the parts during the operation.
Correard, Gilvan Cesar de Castro. "Projeto de uma roda para comporta vagão usando elementos finitos /." Guaratinguetá : [s.n.], 2006. http://hdl.handle.net/11449/97100.
Повний текст джерелаBanca: João Zangrandi Filho
Banca: Anselmo Monteiro Ilkiu
Resumo: O objetivo desta pesquisa foi apresentar um método de análise para a solução de problemas de contato por elementos finitos e o cálculo dos componentes mecânicos que fazem parte do projeto de uma roda de aço. Foi demonstrado passo a passo à execução de um cálculo analítico da roda de uma Comporta Vagão, calculando as cargas radial e axial presentes, verificando a tensão de Hertz, as tensões localizadas no cubo da roda, as tensões atuantes no eixo e a seleção do rolamento. Após esta etapa retiraram-se os parâmetros iniciais que foram utilizados no cálculo analítico para buscar o cálculo por elementos finitos. Assim, foram definidas as superfícies de contato, a geometria dos componentes, a malha, as restrições, as condições de contorno e por fim a análise dos resultados encontrados antes e após o projeto. Dessa maneira, podê-se determinar com precisão os pontos de concentração de tensão para eliminação as falhas. Com a busca deste cálculo, usando a análise por Elementos Finitos, respaldado pelo cálculo analítico, foi possível reduzir o diâmetro da roda para obter ganhos em massa para este tipo de equipamento que usa uma quantidade alta de rodas (acima de 100 rodas), sem alteração da confiabilidade das peças durante seu funcionamento.
Abstract: The objective of this research was to present an analysis method for the solution of contact problems for finite elements and the calculation of the mechanical components that are part of the project of a steel wheel. It was demonstrated step by step the execution of an analytic calculation of the wheel of a Fixed Wheel Gate, calculating the radial and axial loads present, verifying the Hertz pressure, the concentrated stresses in the hub of the wheel, the acting stresses in the shaft and hub, and the selection of the roller bearings. After this stage the initial parameters were used in the analytic calculation in order to obtain the calculation using finite elements. After this, it was defined the contact surfaces, the geometry of the components, the mesh, the restrictions, the real constraints and finally the analysis of the results found before and after the project. After this calculation, the other analysis was established in order to determine the points of concentration stress accurately for the elimination of fails. In order to obtain the calculation, using Finite Elements, by the analytic calculation it was possible to reduce the diameter of the wheel to obtain earn in mass for this type of equipment that uses a high amount of wheels (above 100 wheels), without alteration of the reliability of the parts during the operation.
Mestre
Dixon, Teresa Joan. "The effect of microstructure in the advances of hot rolling of steel." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286885.
Повний текст джерелаWalawender, Kinga Roksana. "Context Sensitive Solutions for Road Infrastructures: Design of a Wildlife Crossing over the S11 Motorway in Poland." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерелаFahd, Faisal. "Risk Assessment Approach for Evaluating Recycled Materials Use in Road Construction: A Pilot Study." University of Toledo / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1230027556.
Повний текст джерелаNickoletopoulos, Nicholas. "Physical and numerical modeling of steel wire rod fracture during upsetting for cold heading operations." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37796.
Повний текст джерелаThe physical model was a Drop Weight Test with a guided pocket-die set capable of approximating industrial cold heading conditions. The results show that the test is sensitive to the critical parameters for cold heading. These include surface quality, residual element level, nitrogen content, microstructure, decarburization, and specimen geometry. The test is capable of assessing the fracture behavior of cold heading materials.
One goal of the study was to reveal differences in fracture behavior with varying steel sources. Accordingly, the matrix of test materials consisted of grade 1038 steels from three different steel sources.
Material preparation and conditioning of test materials approximated industrial procedures for cold heading materials. These procedures included hot rolling, controlled rod cooling, descaling, straightening, lime coating and lubricating, and wire drawing. Spheroidization of test specimens was performed in an industrial batch furnace using an industrial heat treatment cycle.
A finite element program (FEM) enabled the simulation of upsetting in cold heading. The inputs required to model the cold heading process include flow stress behavior and friction conditions representative of cold heading. These inputs were obtained using the CANMET Cam Plastometer and the Friction Ring Test.
The Cockcroft and Latham fracture constants for an as-rolled and a spheroidize annealed 1038 material were computed by FEM modeling and the critical values were calibrated using the Drop Weight Test. The fracture criterion constant was found to be independent of strain path for upsetting in cold heading and thus is material-related.
Eklund, Gustav. "Experimental and Numerical Investigation of Ratcheting Effects in 316L Stainless Steel - The Two-Rod approach." Thesis, KTH, Hållfasthetslära (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-178802.
Повний текст джерелаDet här examensarbetet utfördes under våren 2014. En experimentell och numerisk undersökning genomfördes på det austenitiska rostfria stålet 316L. Huvudområdet för studien var att undersöka fenomenet ratcheting (progressiv plastisk deformation). Experimentellt var huvudfokus på det så kallade tvåstångstestet, vilket tidigare inte hade utförts. Tvåstångstestet utgör en struktur och ett lastfall vari ratcheting kan skapas, samtidigt som strukturen är mer renodlad än de som undersökts i tidigare studier för samma ändamål. Dessutom är spänningstillståndet enaxligt i strukturen. Utöver tvåstångsprovning gjordes även ytterligare provning för att karaktärisera materialet. Utgående från resultat från enaxligt dragprov och fullt reverserad töjningsstyrd cykling anpassades fyra materialmodeller efter materialet. Dessa fyra materialmodeller var Bi-linjär kinematiskt hårdnande modell Multilinjär kinematiskt hårdnande modell (Mróz) Armstrong-Frederick icke-linjärt kinematiskt hårdnande modell Chaboche icke-linjärt kinematiskt hårdnande modell med tre superponerade back stress- tensorer. En FEM-modell över tvåstångsprovet användes för att simulera de olika materialmodellernas respons. Resultaten från dessa jämfördes sedan med resultaten från tvåstångsprovningen. Målet, bortsett från att karaktärisera ratchetingeffekterna i 316L-stålet, var att utvärdera materialmodellernas förmåga att återskapa resultaten från tvåstångsprovningen. Resultaten från jämförelsen mellan simuleringarna och tvåstångsprovningen pekar på att den bi-linjära och den multilinjära materialmodellen förmår återskapa provresultaten bättre än Armstrong-Frederick-modellen och Chaboche-modellen. De två sistnämnda materialmodellerna predikterade i de flesta fall konstant ratchetinghastighet, vilket inte överensstämde med provresultaten från tvåstångsprovningen. Även om predikteringen av tvåstångsprovningen med den bi-linjära och multilinjära materialmodellen överlag var bättre än för de icke-linjärt hårdnande materialmodellerna predikterade den bi-linjära och multilinjära materialmodellen i vissa fall plastisk shakedown, vilket inte sågs i provresultaten. Införandet av isotropt hårdnande i de icke-linjärt kinematiskt hårdnande materialmodellerna kan ha förbättrat simuleringarnas överensstämmande med provresultaten då materialet visar på omfattande plastiskt hårdnande, både i monotont dragprov såväl som cykliskt hårdnande. Metoden som utvecklades för tvåstångsprovningen visade sig robust och pålitlig. En slutsats som kan dras är att effekter från materialratcheting förmodligen är små i jämförelse med effekter från strukturratcheting i tvåstångsprovningen. Dessutom kan från jämförelsen mellan simuleringarna och tvåstångsprovningen sägas att en mer avancerad materialmodell inte nödvändigtvis resulterar i en prediktering som överensstämmer bättre med provningen.
Yoshimura, Koji. "Robust Design of Roll Pass for Reduced Geometric Variance in Hot Rolling of Steel Rod." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1380554061.
Повний текст джерелаMooney, Dennis Todd 1964. "Experimental and numerical study of the rod shear test for determining steel-sand interface behavior." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282785.
Повний текст джерелаVlček, Radek. "Ocelová konstrukce mostu na pozemní komunikaci." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240323.
Повний текст джерелаMirjana, Filipovic. "Evolution of artificial defects during shape rolling." Licentiate thesis, Högskolan Dalarna, Materialvetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:du-5215.
Повний текст джерелаŠťastná, Barbora. "Vliv silničních záchytných systémů na počet a druh dopravních nehod." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225924.
Повний текст джерелаCamp, Joe Harden. "Birch rod to arsenal : a study of the Naval Ordnance Plant at South Charleston, West Virginia and the search for a government industrial policy /." VIEW WEB VERSION, 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2359.
Повний текст джерелаFilipovic, Mirjana. "Evolution of artificial defects during shape rolling." Licentiate thesis, Stockholm : Division of Mechanical Metallurgy, Department of Material Science and Engineering, Industrial Engineering and Management, Royal Institute of Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4350.
Повний текст джерелаBiswas, Souvik. "Simulation of thermo-mechanical deformation in high speed rolling of long steel products." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-1027103-203032/.
Повний текст джерелаKeywords: product geometry; hot rolling; high speed rolling; rolling simulation; bar and rod rolling; free surface; finite element analysis. Includes bibliographical references (p. 69-75).
Vošček, Martin. "Silniční a tramvajový most." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265573.
Повний текст джерелаKloda, Petr. "Ocelová konstrukce silničního mostu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391963.
Повний текст джерелаBergstedt, Pontus, and Viktor Svemark. "Konstruktion av stegmatare för vevstakar." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17369.
Повний текст джерелаThis work describes the preparatory work and construction of a step feeder that sorts and orients connecting rods in a cycle time of ten seconds. Industries are often dependent of different material handling operations which assures a specific material orientation, which validates the importance of this work. This has been done by dividing the machine into two main functions; Stair case-function, which pre-sorts and transports the connecting rods further to the second function, the orientation- function where the orientation is performed. By using methods such as; design for manufacture & assembly, failure mode & effects analysis and softwares for material database handling, computer aided design and numerical strength analysis a construction could be formulated which reflects the aspects that characterize a well-planned product. Seven different design-methods were used in order to generate and evaluate ideas in several iterated steps. Ten investigative experiments were conducted as an additional evaluation of concepts and as a basis for further calculations and conclusions. The formulation of the step feeder resulted in a single-acting stair with two moving stairs and a static between them for transfer. A single-feeder after the staircase in the shape of a “paddle wheel” ensures that the connection rods are delivered one-by-one to the orientation-function while also ensuring the cycle time. An orientation-function consisting of a “conveyor“ that with the aid of friction and an offset of the center of gravity orients the connecting rods with the crankshaft-end first. Lastly were three critical areas in the construction further examined with finite element method with passing results. All objectives for the project were achieved, the step feeder have for instance fewer unique components than existing solutions. The ambition was to design the step feeder with a low grade of complexity and without sensors have permeated throughout the entire project, which also was achieved.
Kuba, Michal. "Návrh silničního ocelobetonového komorového mostu na obchvatu Bludova." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372194.
Повний текст джерелаSilva, Irwing Aguiar Ribeiro da. "Modelagem do comportamento dinâmico e análise de fadiga de pontes rodoviárias mistas (aço-concreto)." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=9076.
Повний текст джерелаConsiderando-se os diversos carregamentos que solicitam a estrutura de uma ponte rodoviária, ao longo de sua vida útil, alguns possuem um comportamento essencialmente dinâmico, ou seja, variam com o tempo, diferentemente do que é considerado na prática corrente de projeto desse tipo de obra de arte. Em geral, os projetistas desse tipo de estrutura têm tratado carregamentos como o de vento, tráfego de veículos e de pedestres como ações de natureza estática, ignorando seu perfil cíclico. Tal consideração, em diversas situações de projeto, tende a minorar os efeitos das ações dinâmicas sobre o sistema estrutural. Além disso, estruturas submetidas a solicitações cíclicas, sob uma carga inferior à caga máxima suportada pelo material, estão sujeitas ao fenômeno da fadiga. A consideração adequada de todos estes aspectos mostra-se fundamentalmente importante para correta avaliação dos níveis de esforços solicitantes do sistema estrutural e, bem como, para a identificação de fenômenos importantes como o da fadiga que pode vir a provocar, por exemplo, a ruptura de componentes estruturais sem aviso prévio ou motivo aparente. Para tal, nesta dissertação as técnicas para a contagem de ciclos de tensão e a aplicação das regras de dano acumulado foram analisadas através de curvas do tipo S-N, associadas a diversas normas de projeto. A ponte rodoviária mista (aço-concreto) investigada neste estudo é constituída por seis vigas de aço longitudinais com enrijecedores transversais, oito transversinas e por um tabuleiro de concreto armado. O modelo numérico-computacional, desenvolvido para a análise dinâmica da ponte, foi elaborado com base em técnicas usuais de discretização através do método dos elementos finitos. As mesas e almas das vigas, assim como os enrijecedores , foram modelados por elementos de casca e laje de concreto armado, por elementos sólidos. O carregamento dinâmico avaliado no presente estudo diz respeito ao tráfego de veículos, cuja representação se dá a partir de sistemas "massa-mola-amortecedor". Os comboios formados são adotados como sendo semi-infinitos, deslocando-se com velocidade constante sobre a ponte. As conclusões da presente investigação versam acerca da vida útil de serviço dos elementos estruturais de pontes mistas (aço-concreto).
Considering the various shipments requesting the structure of a road bridge over its useful life, some are of an essentially dynamic behavior, ie , vary with time, contrary to what is considered standard practice in the design of this type of work of art. In general, the designers of this type of structure have treated loads such as wind, vehicles and pedestrians as traffic static nature of actions, ignoring their cyclical profile. This consideration, in various design situations, tends to mitigate the effects of dynamic actions on the structural system. Furthermore, structures subjected to cyclic requests under a lower load at maximum shits supported by the material, are subject to fatigue phenomenon. The proper consideration of these aspects is shown fundamentally important for accurate assessment of levels of internal forces in the structural system, as well as for the identification of important phenomena such as fatigue which may ultimately lead, for example, disruption of structural components without warning or apparent reason. To this end, this dissertation techniques for counting cycles of tension and enforcement of accumulated damage were analyzed by the type SN curves associated with various design standards. Mixed road bridge (steel-concrete) investigated in this study consists of six longitudinal steel girders with transverse stiffeners eight crossbeams and a deck of reinforced concrete. The numerical - computational model developed for the dynamic analysis of the bridge, was based on standard techniques of discretization by finite element method. The tables and souls of the beams, as well as the stiffeners were modeled by shell elements and reinforced concrete slab, for solid elements. The dynamic loading evaluated in this study relates to vehicular traffic, whose representation is given from "mass - spring - damper systems." Trains formed are adopted as semi - infinite, moving with constant speed on the bridge. The findings of this research Versam about the service life of the structural elements of composite (steel-concrete) bridges.
Hollý, Tomáš. "SO 217 Most přes řeku Morávku v km 6.205." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225523.
Повний текст джерелаWestin, Tommy. "Induktiv provning av ferritiskt rostfritt stå." Thesis, Högskolan Dalarna, Materialvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:du-10039.
Повний текст джерелаČernoch, Jakub. "Lávka pro pěší." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265478.
Повний текст джерелаKábrt, Michal. "Ocelová rozhledna." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372095.
Повний текст джерелаUhl, Milan. "Návrh silničního spřaženého mostu na obchvatu Bytomi." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240415.
Повний текст джерелаBílek, Tomáš. "Vícepodlažní administrativní budova ve Zlíně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225572.
Повний текст джерелаKubíček, Michal. "Nosná konstrukce jízdárny." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226064.
Повний текст джерелаSmělíková, Petra. "Přemostění řeky Svitavy a tratě ČD v Blansku." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227189.
Повний текст джерелаAmeli, Mostafa. "Heuristic Methods for Calculating Dynamic Traffic Assignment Simulation-based dynamic traffic assignment: meta-heuristic solution methods with parallel computing Non-unicity of day-to-day multimodal user equilibrium: the network design history effect Improving traffic network performance with road banning strategy: a simulation approach comparing user equilibrium and system optimum." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSET009.
Повний текст джерелаTransport systems are dynamically characterized not only by nonlinear interactions between the different components but also by feedback loops between the state of the network and the decisions of users. In particular, network congestion affects both the distribution of local demand by modifying route choices and overall multimodal demand. Depending on the conditions of the network, they may decide to change for example their transportation mode. Several equilibria can be defined for transportation systems. The user equilibrium corresponds to the situation where each user is allowed to behave selfishly and to minimize his own travel costs. The system optimum corresponds to a situation where the total transport cost of all the users is minimum. In this context, the study aims to calculate route flow patterns in a network considering different equilibrium conditions and study the network equilibrium in a dynamic setting. The study focuses on traffic models capable of representing large-scale urban traffic dynamics. Three main issues are addressed. First, fast heuristic and meta-heuristic methods are developed to determine equilibria with different types of traffic patterns. Secondly, the existence and uniqueness of user equilibria is studied. When there is no uniqueness, the relationship between multiple equilibria is examined. Moreover, the impact of network history is analyzed. Thirdly, a new approach is developed to analyze the network equilibrium as a function of the level of demand. This approach compares user and system optimums and aims to design control strategies in order to move the user equilibrium situation towards the system optimum
Drexler, Martin. "Lávka pro pěší." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226916.
Повний текст джерелаHrudík, Jan. "Přední náprava vysokovýkonného sportovního vozu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-443475.
Повний текст джерелаЛуценко, Владислав Анатолійович, Владислав Анатольевич Луценко та Vladyslav A. Lutsenko. "Наукові основи вдосконалення термомеханічної обробки катанки для сталевого дроту малого діаметру". Thesis, Запорізький національний технічний університет, 2015. http://eir.zntu.edu.ua/handle/123456789/417.
Повний текст джерелаUK: Дисертаційна робота присвячена підвищенню в процесі ТМО пластичних властивостей сталевої катанки. Отримана сталева катанка має структуру: високовуглецева – дисперсний перліт із відсутністю замкнутої цементитної сітки, мінімальний зневуглецьований шар, який рівномірно розподілений по периметру; низьковуглецева – рівномірну структуру фериту з мінімальною кількістю перліту; легована – наявність бейніто-мартенситних ділянок до 10% в змішаній структурі. Результати використані на дротових станах ВАТ «БМЗ» та ПАТ «АрселорМіттал Кривий Ріг». Підвищення пластичності катанки забезпечило виготовлення сталевого дроту малого діаметру без проміжної термічної обробки, що дозволило знизити видатковий коефіцієнт металу в середньому на 10%. EN: The dissertation is devoted of increasing in thermo-mechanical processing the plastic properties of steel wire rod. The obtained steel wire rod has the structure: high carbon – the dispersion of perlite without closed cementite net, the minimum depth of equable decarburized layer; low carbon – uniform structure of ferrite with a minimum of perlite; alloy – the occurrence of bainite-martensite areas up to 10% in the mixed structure. The results were used on the rod mills OJSC “Byelorussian steel works” and РJSC “ArcelorMittalKryvyiRih“. The increasing of plasticity provided the production of steel wire of small diameter without intermediate heat treatment, thus reducing the expenditure coefficient of metal by 10% in average. RU: В диссертационной работе решена актуальная научно-техническая проблема – повышение после высокотемпературной прокатки пластических свойств металла путем развития научных основ о влиянии процессов ТМО на структурообразование и качественные характеристики стальной катанки. Установленные закономерности позволили совершенствовать технологию ТМО катанки и при экономии материальных ресурсов обеспечить производство стальной проволоки малого диаметра для металлокорда (в том числе сверхвысокопрочного), высокопрочной бортовой, канатной, легированной сварочной и низкоуглеродистой. Изучена кинетика превращения аустенита непрерывнолитой стали 90 при непрерывном охлаждении и в изотермических условиях. Установлено, что выделения цементита по границам зерен подавляются и полностью отсутствуют при скоростях более 10°С/с и при изотермическом распаде. Определено, что величина эффекта рекалесценции в стали 90 зависит от времени превращения. Установлено, что при ТМО снижение температуры после горячей деформации с 1050…1100°С до 900…950°С в результате принудительного охлаждения при повышении дробности деформации (на 20%) приводит к увеличению пластических свойств высокоуглеродистой стали. Полученная катанка для стальной проволоки, в отличие от традиционной, имеет повышенные пластические свойства. Основу структуры катанки составляет: высокоуглеродистой – сорбитообразный перлит (более 70%) с отсутствием избыточных структур (замкнутой цементитной сетки), минимальный обезуглероженный слой равномерно распределен по периметру; низкоуглеродистой – равномерная структура феррита с минимальным количеством пластинчатого перлита; легированной – наличие бейнито-мартенситных участков до 10% в смешанной структуре. Повышены требования к микроструктуре и свойствам высокоуглеродистой катанки и проволоки, которые отражены в изменении №11 к ЗТУ 840-03-2006 «Катанка стальная сорбитизированная для металлокорда, бортовой проволоки и проволоки для рукавов высокого давления» и ТУ У 276.3-23365425-638.2008 «Проволока стальная термически обработанная». Результаты использованы на ПАО «АрселорМиттал Кривой Рог» при разработке СТИ 228-112-2008 «Производство катанки из легированных сталей для сварочной проволоки ответственного назначения», изменения №3 к режимам охлаждения проката в потоке проволочного стана 150-1 СПЦ-1. Разработаны и внедрены на ОАО «БМЗ» режимы ТМО стальной катанки, в том числе для сверхвысокопрочной проволоки и металлокордапо ЗТУ 840-03-2006 (Изменения к ТК 840-П13-01-2002 и ТК 840-П3-01-2007 на режимы двухстадийного охлаждения катанки различного марочного сортамента в потоке стана 150). Повышение пластичности после высокотемпературной прокатки обеспечило изготовление стальной проволоки малого диаметра различного назначения без промежуточной термической обработки с сохранением требуемых конечных характеристик. Катанка, изготовленная по новому режиму ТМО, переработанная на проволоку малого диаметра, имеет лучшую технологичность в сравнении с базовой. Так, при производстве высокопрочногометаллокорда обрывность снизилась на 34%, а сверхвысокопрочного – на 23%. Освоение усовершенствованных режимов ТМО позволило снизить расходный коэффициент металла в среднем на 10%. Общий фактический экономический эффект от внедренных новых технологических решений составляет 31,7 миллиона гривен, доля автора – 4,44 миллиона гривен.
Lečbych, Antonín. "Trojlodní objekt pro průmyslovou výrobu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227558.
Повний текст джерелаWard, Nicholas Rhys. "The rate-limiting mechanism for the heterogeneous burning of iron in normal gravity and reduced gravity." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16673/.
Повний текст джерелаWard, Nicholas Rhys. "The rate-limiting mechanism for the heterogeneous burning of iron in normal gravity and reduced gravity." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16673/1/Nicholas_Ward_Thesis.pdf.
Повний текст джерелаŠašinka, Jakub. "Ocelová konstrukce vojenského muzea." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227198.
Повний текст джерелаMISHRA, SAURABH KUMAR. "AN OPTIMIZED PATH PLANNING ALGORITHM BASED ON SOFT COMPUTING." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16354.
Повний текст джерелаtien, Chiang shih, and 江仕添. "A Case Study of Biotechnical Retaining Structures in Steep Slopes-Widening of the Tao-Chu Road #20." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/96136886358399154531.
Повний текст джерела中華大學
土木工程學系碩士班
94
This study evaluates the optimum retaining structure system by investigating the soil characteristics and the useable lands along the slope of widening of the Tao-Chu Road #20, Taoyuan County, Taiwan. The evaluated factors include: cost, materials specification, availability of on-site materials, construction difficulty, inspection, risk potential, vegetation, environment & landscape, acceptability by residence, maintenance & management. Among the three different types of retaining structures, namely, reinforced soil wall, stone wall, and sandwiched wall, the above 10 factors are evaluated and the reinforced soil wall is considered the optimum ecological engineering method. Due to the elevation difference of more the 10 m, and the space constraint, the stone wall is unsuitable due to its stable high limitation of only 3m. Sandwiched wall is also unsuitable because of its big volume of rigid gravity wall, necessity of piling and uneconomic in cost. The reinforced soil wall, on the other hand, is flexible wall and the earth pressure could be reduced due to some allowable lateral deformation. Besides, it has several other advantages, such as high earthquake resistance, rapid construction, unnecessities of heavy construction equipments and very skillful workers, and the possibility of building very high wall, etc. Besides, since the geogrid has openings, spreading the weeds and cohesive soils will allow vegetation to grow. When the vegetation grows, not only green and beautiful, it also provides the nest for small animals and bugs to reside. Keywords: road widening, biotechnical retaining structures, reinforced soil walls, ecological engineering.