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Welding of socket from C-Mn steel
Boček, Martin ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
Final thesis, elaborated within the master study in the field of Manufacturing technology, deals with analysis and solving of weld cracking problem in welds of anti-roll bar socket for passenger car. Sockets material is fine-grained low-alloy steel S420MC. For better understanding of the problem, a literary study has been elaborated, describing the issue. Next, an analysis of parts material and its weldability, has been conducted, according to ČSN EN 1011-2 standard. After an analysis of cracks and considering current conditions of sockets welding a series of experiments has been designed to evaluate impact of different process parameters on final weld quality. Experiments results have been used to compile a series of recommendations for adjustment of the welding process and to eliminate weld cracking. The results of the experiments were used as a basis for elaboration of WPS protocol.
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Electronically Controlled Anti-roll Bar
Drozd, David ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
The topic of this master’s thesis is electronically controlled anti-roll bar. The first part describes the effect of body roll and anti-roll bars on vehicle characteristics, as well as an overview of currently used systems for active stabilization. The second part analyzes simulations of various driving scenarios in a multibody software in order to evaluate the effect of anti-roll bars with various stiffness on driving characteristics of vehicles. The numerical data obtained from simulations are applied in later part of the thesis. The design concept of an active stabilization system is explained in the third part. In the last part, the effect of key parameters on the performance of the system is determined.
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Device for Spring Dismount and for Spring Characteristics Measurement
Mazura, František ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
The presented master’s thesis is focused on the design of device for spring dismount from shock absorber and measuring of its spring characteristic. Then is the thesis focused on the design of device for measuring the spring characteristic of anti-roll and torsion bars. The introductory part of the thesis describes the basic distribution of springs and their properties and also design variants of wheel suspensions. Next part introduces devices already available on the market. The following sections aim to the design of stated devices itself, i.e. the description of their parts and functions, the definition of output parameters and stress-strain analysis. Both designs, including the analyses and technical drawings, were created in Autodesk Inventor software.
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Measurement of torsion bars and stabilizers
Bláha, David ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
This diploma thesis deals with the measurement of the anti-roll bar characteristics. The target of this thesis is to design a device for measuring of torsional stiffness of the automobile stabilizer bars, design a measuring sequence for detection values subsequently used to calculate the stiffness, and calculate the total measuring error. The measuring device is designed for the needs of the Institute of Automotive Engineering of FME BUT.
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Design of vehicle suspension stabilizer
Krasula, Jan ; Blaťák, Ondřej (referee) ; Porteš, Petr (advisor)
This master’s thesis is focused on a design of the formula student’s anti-roll bar. The beginning of the thesis is devoted to the introduction of the anti-roll bar function and the explanation of its effect on a vehicle including the analysis of various constructions. Second part deals with the Formula Student competition. There is the analysis of the formula Ford’s anti-roll bar as a starting point for our own design. In the section which deals with the anti-roll bar design several alternatives are designed, the stress analysis of components are made and multi body system models are developed for final solutions. These models serve for further analyses of driving characteristics of the vehicle.
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Design of Racing Car Front Suspension
Kroliczek, Václav ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This work deals with design of front trapezoidal suspension for racing car Škoda 130RS. The first part describes types of current suspensions and provides a review of important suspension parameters that have great influence to vehicle handling. The second part deals with kinematic analysis existing suspension, its modification and design of new type.
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Design of vehicle suspension stabilizer
Macháček, Tomáš ; Ramík, Pavel (referee) ; Porteš, Petr (advisor)
Tato diplomová práce je zaměřená na stabilizátory u podvozku aut. První část popisuje všeobecné znalosti vlivu naklonění karosérie na jizdní vlastnosti auta a možnosti konstrukčních řešení používaných v praxi. Dále jsou v této části uvedeny nevýhody použití stabilizátoru a jejich náhrady. Nasledující téma se zaměřuje na soutěž Formule Student a její všeobecná pravidla. Hlavní částí této práce je analýza stabilizátoru Formule Ford, na kterou v poslední části této práce navazuje analýza předního a zadního stabilizátoru Formule Student. Byly vytvořené kompletní MBS modely pro přední a zadní zavěšení včetně stabilizátoru. Díky těmto modelům bylo možné provést výpočty klopných tuhostí a pevnostní výpočty. Z těchto výpočtů bylo možné určit vhodné nastavení stabilizátoru. Všechny modely mohou být dále použitelné pro analýzu jízdních vlastností příslušného vozidla.
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Electronically Controlled Anti-roll Bar
Drozd, David ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
The topic of this master’s thesis is electronically controlled anti-roll bar. The first part describes the effect of body roll and anti-roll bars on vehicle characteristics, as well as an overview of currently used systems for active stabilization. The second part analyzes simulations of various driving scenarios in a multibody software in order to evaluate the effect of anti-roll bars with various stiffness on driving characteristics of vehicles. The numerical data obtained from simulations are applied in later part of the thesis. The design concept of an active stabilization system is explained in the third part. In the last part, the effect of key parameters on the performance of the system is determined.
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Device for Spring Dismount and for Spring Characteristics Measurement
Mazura, František ; Vančura, Jan (referee) ; Blaťák, Ondřej (advisor)
The presented master’s thesis is focused on the design of device for spring dismount from shock absorber and measuring of its spring characteristic. Then is the thesis focused on the design of device for measuring the spring characteristic of anti-roll and torsion bars. The introductory part of the thesis describes the basic distribution of springs and their properties and also design variants of wheel suspensions. Next part introduces devices already available on the market. The following sections aim to the design of stated devices itself, i.e. the description of their parts and functions, the definition of output parameters and stress-strain analysis. Both designs, including the analyses and technical drawings, were created in Autodesk Inventor software.
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Design of Racing Car Front Suspension
Kroliczek, Václav ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This work deals with design of front trapezoidal suspension for racing car Škoda 130RS. The first part describes types of current suspensions and provides a review of important suspension parameters that have great influence to vehicle handling. The second part deals with kinematic analysis existing suspension, its modification and design of new type.
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