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The Axles of SxS Vehicles
Štolpa, Radek ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
The diploma thesis deals primarily with the topic of the kinematics of the wheel suspension that has a significant effect on the dynamics of the whole vehicle. The thesis gives a general overview of kinematic characteristics and their impact on driving characteristics. It deals with load transfers that occur due to lateral and longitudinal accelerations. The thesis analyses the axles of the SxS vehicle, which has wheel strokes up to 600 mm. The axles have high requirements for changes in kinematic characteristics. The thesis provides an overview of the used axles and then compares them with the original ones. The thesis contains its design of axles with the procedure and evaluation of differences compared to the other axles specified by the boundary conditions. An algorithm using analytical geometry was also created where instant centre positions, roll centres and anti-characteristics for the static position of the vehicle can be calculated. In conclusion, it contains a sensitivity analysis, which aims to acquaint with the effects of kinematic connections of double wishbone suspensions on the kinematic characteristics.
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Transaxles of modern vehicles
Okáník, František ; Blaťák, Ondřej (referee) ; Píštěk, Václav (advisor)
This bachelor thesis is focused on comparing the properties of axles used in modern passenger cars kinematics of wheel suspension and advantages and disadvantages of their construction. The thesis also includes a description of each of the axle component, their construction and function. Part of this thesis is focused on the description of race car axles and their design differences between passenger cars. Final chapter is devoted to several interesting and innovative axle components that are significantly different than standard components.
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Design of Formula Student Wheel Suspensions
Urban, Marek ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
Tato práce se se zabývá návrhem kinematiky zavěšení kol obou náprav. Na základě analýz jízdních dat, multi-body simulací v softwaru Adams Car, simulací v Matlabu a analytických kalkulací v Mathcadu, je navržena řada změn s cílem zlepšit jízdní vlastnosti vozu Formule student, tyto změny jsou následně implementovány do CAD modelu vozu. Jednotlivé změny kinematiky náprav jsou provedeny na základě analýzy konkrétního problému, který se snaží řešit. Jednou z problematik je zástavbová náročnost systému odpružení a zavěšení zadních kol, zde je cílem snížit hmotnost, výšku těžiště a moment setrvačnosti. Další problematikou je geometrie předního kola, kde je cílem zlepšit využití pneumatik a snížit síly v řízení. Dále se práce zabývá simulacemi elastokinematiky zadní nápravy, součástí je také návrh měřícího zařízení. V poslední části je zkoumán vliv provedených změn i elastokinematiky na jízdní dynamiku vozu v ustálených stavech za pomocí MM metody simulované s modelem celého vozu v Adams Car a zpracované v Matlabu.
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The suspension types of passenger Cars
Sedlář, Jiří ; Blaťák, Ondřej (referee) ; Porteš, Petr (advisor)
In this thesis there is mentioned the overview of types of axles, which are used by the current cars.Their working principle is described for each type of axle and it is also mentioned an example of usage for concrete car. In the thesis are listed marks and types of cars, which use this types of axles.
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Stress, deformation and strength analysis of the frontal recumbend axle
Valenda, Jakub ; Gayer, Tomáš (referee) ; Vrbka, Jan (advisor)
The bachelor’s thesis is focused on evaluation of tenseness and safety of a recumbert bike's front axle using method of basic elasticity. Calculation is limited to three options that differ in manner of frame's load. Used model of the axle is beam with two straight and one curved part. A bend and twist are considered as dominant stress. In conclusion there is for each load status evaluated the progress of tension on a beam's length, safety in critical point and deformation in point of power effect on axle. In my bachelor thesis there was used Matlab software for analytic calculation. Ancillary drawings were created in AutoCAD and Autodesk Inventor.
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The Process of Repair Vheel Set
Vaculík, František ; Prokop, Jaroslav (referee) ; Osička, Karel (advisor)
Diploma work describes in its theoretical part particular types of pairs of wheels used on railway vehicles in Czech Republic as well as their components and assembly instructions. Practical part describes workplace for wheels in reparation DPOV, a.s. at repairing centre Nymburk, its facilities and repairing possibilities by total repair of pairs of wheels. Practical part brings at the end particular report with results of pairs of wheels measuring.
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Two-axle trailer for a truck
Novotný, Tomáš ; Pokorný, Přemysl (referee) ; Zeizinger, Lukáš (advisor)
This bachelor thesis deals with the conceptual design of a two-axle trailer for a truck. The first part contains a research analysis of trailers and subsequent legislation. In the next part is in detail analyzed construction of the trailer concept and then the calculation of the axle loads. The last part consists of strength analysis with its evaluation and partial drawing documentation.
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Design of mini excavator
Švarc, Pavel ; Bilík, Martin (referee) ; Knoflíček, Radek (advisor)
This diploma thesis can be divided into two main sections. The first stage contains research about mini excavators and is focused on main parts of this machines and their structural design. The second stage follow the first one and its goal is create own design of mini excavator according to chosen parameters. Parts of the second stage are execution of basic calculations, techno-economic evaluation and risk analysis. At the end there is created 3D model of designed mini excavator and summary of his properties and parameters. Goal of the whole diploma thesis is design the competitive mini excavator.
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Transmission mechanisms of autocross racing cars
Bárta, Jiří ; Klapka, Milan (referee) ; Mazůrek, Ivan (advisor)
This Bachelor's thesis is special technical search with concentration on creating of overview drive conceptions and transmission mechanisms at autocross racing cars. As the basis of the information there was processed the proposal of conception drive double engine arrangement for class 1.600 ccm. The whole thesis is comleted with photo-documentation of racing special cars and with their parts.
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