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Sound power level estimation principles
Fajt, Jakub ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This Master´s thesis deals with principles of determination of the sound power level. At the very beginning there is an explanation of important concepts. Afterwards there is an overview of standards that deal with the sound power level determination, including the ČSN EN ISO 9614-1 standard which is used for the experiment. Last but not least, there is described the experiment, consisting of several measurements of the same object, but every time with different configuration of measuring and sound reflective surfaces.
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Numerical Modelling of the Gear Mesh Stiffness
Gazda, Silvester ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This master's thesis deals with the design of FEM model of gear pair with an intention to find out how stiffness changes during meshing. It firstly describes the necessary knowledge needed to analyse the problem, like the geometry of an involute tooth and evaluation of meshing stiffness. Followed by a description of work procedures from the creation of models through settings of mesh, contacts and analysis to evaluating of results.
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Railroad vehicles noise issue
Rydlo, Andrej ; Řehák, Kamil (referee) ; Zubík, Martin (advisor)
This thesis includes research study of railway noise from the view of legislated restrictions and measurements. Different sources of noise are discussed in the beginning while the core of the work processes current noise limits and noise measurements. There is also provided a peek into road vehicles limits and measurements with comparison.
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Railroad vehicles noise issue
Rydlo, Andrej ; Řehák, Kamil (referee) ; Zubík, Martin (advisor)
This thesis includes research study of railway noise from the view of legislated restrictions and measurements. Different sources of noise are discussed in the beginning while the core of the work processes current noise limits and noise measurements. There is also provided a peek into road vehicles limits and measurements with comparison.
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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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