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Modern Tractor Transmissions
Bartošová, Daniela ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This Bachelor thesis concerns an overview of the modern trends in the area of tractors transmissions. It explains the reason why both the power shifts and the continuously variable transmissions. Further on, this thesis emphasizes the innovative elements of transmission concept at selected tractor manufacturers.
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The Cylinders of Four-stroke Engines
Vanda, Marek ; Řehák, Kamil (referee) ; Dlugoš, Jozef (advisor)
The topic of this bachelor thesis is Cylinders of Four-stroke Engines. First part is about four-stroke cycle, engine construction. Next parts are about cylinders, their function and requirements. Also included is the importance of the cylinders on the engine operation and engine life. Last part is focused on the construction, materials of the cylinders and their usage in the past and today.
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Development of combustion engine turbochargers
Franc, Vladimír ; Dlugoš, Jozef (referee) ; Řehák, Kamil (advisor)
This bachelor's thesis is a research project focused on the development of turbocharger technology for diesel and gasoline engines. The work is divided into four chapters. The first chapter is a general description of the construction, basic principles and key components of turbochargers. Next, the history of turbocharging will be briefly summarized. The third chapter is devoted to particular construction methods and finally new development trends will be discussed too.
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Strain stress analysis of BS splint
Řehák, Kamil ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
This master‘s thesis deals with strain-stress analysis of hip joint together with the final applied total endoprosthesis with Burch-Schneider cage. The main point of my work was to find the solution of stress–strain analysis state, which has been mentioned before in connection with Burch-Schneider cage. I describe the technique of geometric creation of whole body system, component´s materials or conditions which are neccessary for calculation. In coclusion there are results achieved in variants. In the first option the case of bone tissue was considered, which don’t reach degradation mechanical properties effect straining under Burch-Schneider cage. In some cases when the bone tissue is untimely forced, the necrosis of bone tissue takes place under Burch-Schneider cage. This possibility is described in the second option of type. For every option there was a case which was calculated with applied screw or without it. In all option mechanical features of cancellous bone tissue and their change influence on achieved results were considered. This problem was solved computational simulation in commercial software Ansys Workbench 12.0.
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Statically indeterminate rod systems
Sedláček, Radek ; Řehák, Kamil (referee) ; Florian, Zdeněk (advisor)
The bachelors thesis is focused on methods of solving rod systems and that mainly statically indeterminate. At first is mentioned theoretical basis of rod systems, next description of selected methods for solving statically determinate rod systems and then description of methods for solving statically indeterminate rod systems which are demonstrated on model examples. The purpose of this thesis is to consider the possibility of using methods of solving statically indeterminate rod systems nowadays, which is devoted conclusion.
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The beginnings of the application of finite element method in biomechanics
Hájek, Petr ; Řehák, Kamil (referee) ; Florian, Zdeněk (advisor)
Bachelor’s thesis is aimed to beginnings of the application of finite element method in biome-chanics. We can define the period of beginnings by the ages 1972, when Brekelmans et al. introduces the method in biomechanics, and 1983, when the method was well established in this field. The main part of the thesis is research study describing this period, presents author (or author’s group), model used, a focus of their work. The works of some authors are discussed in detail; other works are mentioned more marginally. Beside the research study, there is a strain-stress analysis of femur in the thesis, which summarizes basic findings from research study. This is a practical application of the finite element method.
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Analysis of state of stress in press and shrink fits
Dudek, Milan ; Řehák, Kamil (referee) ; Horníková, Jana (advisor)
This thesis is focused on calculation of overlap in press fit depending on vield strength. There are used methods of analytic elasticity. The counted values are implemented into the technologic process as updated technologic specification. The practical values of overlap depend on exactness of available technology. The evaluation is done at the end of thesis (economic evaluation as well)
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Development of Endoprosthesis.
Řehák, Kamil ; Houfek, Martin (referee) ; Florian, Zdeněk (advisor)
This bachelor’s thesis deals with the problems of the development of total endoprosthesis. The work contains the history of endoprosthesis and the present day description of made and used types of endoprosthesis. In the conclusion there is foreshadowed the development of joints’ surgical implants.
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