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Development and influence of the weight of cars and motorcycles
Valtrová, Martina ; Fojtášek, Jan (referee) ; Zháňal, Lubor (advisor)
This bachelor's thesis contains the description of the evolution of weight of automobiles and motorcycles. The first chapter contains a description of automobile dynamics and the influence of weight on dynamic properties of a vehicle. To describe the evolution of weight better, there are more detailed descriptions of weight evolutions of certain types of vehicles. The research of historical evolution and technology used today serves as the basis for the main outcome of this thesis, which is a prediction of the future development. This is the content of the last chapter.
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Piston of a spark-ignition engine produced by additive manufacturing
Valtrová, Martina ; Dlugoš, Jozef (referee) ; Drápal, Lubomír (advisor)
The first objective of this thesis was compiling research about currently produced pistons for internal combustion engines and about additive manufacturing and based on the acquired information deciding which type of piston makes the most of the advantages. Following this research, the next step was creating a design adjustment of a piston, which was previously designed with the conventional methods of manufacturing in mind, in a way that would make the best use of the different possibilities of additive manufacturing. There was also an optimisation carried out, which depicted the densities of material elements in the piston, showing where the material was less important. There were three variants of the additive manufactured piston created, ranging from a relatively conservative design, which could be theoretically produced by conventional methods with a more substantial subtraction of material added, to a design which could only be produced via additive manufacturing. A thermo-structural analysis at maximum engine load was carried out for all these piston models. Based on these data, a conclusion was made, whether the use of additive manufacturing was justified over the use of the conventional subtractive methods.
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Bibliography of the review Proměny (Metamorphoses) from 1964 to 1979.
Valtrová, Martina ; Holý, Jiří (advisor) ; Merhaut, Luboš (referee)
ABSCTRACT The present thesis deals with the magazine Proměny, quarterly of The Society for Science and Arts, mapping the first seven years of its existence (1964-1970), i.e. the period under the editorship of Ladislav Radimský. The original plan was to create an annotated bibliography for the first fifteen volumes; however, it became obvious during the research that the amount of the material would largely exceed the length of a bachelor thesis. The commentary focuses on the years 1964-1970 as well; nevertheless, it also briefly outlines the whole time span of the magazine's publication as well as the whole existence of The Society for Science and Arts. The thesis analyzes Proměny in the light of the historical and cultural context, comparing it with other exile journals. The main part of the thesis is the annotated bibliography, accompanied with the author and subject indexes.
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Piston of a spark-ignition engine produced by additive manufacturing
Valtrová, Martina ; Dlugoš, Jozef (referee) ; Drápal, Lubomír (advisor)
The first objective of this thesis was compiling research about currently produced pistons for internal combustion engines and about additive manufacturing and based on the acquired information deciding which type of piston makes the most of the advantages. Following this research, the next step was creating a design adjustment of a piston, which was previously designed with the conventional methods of manufacturing in mind, in a way that would make the best use of the different possibilities of additive manufacturing. There was also an optimisation carried out, which depicted the densities of material elements in the piston, showing where the material was less important. There were three variants of the additive manufactured piston created, ranging from a relatively conservative design, which could be theoretically produced by conventional methods with a more substantial subtraction of material added, to a design which could only be produced via additive manufacturing. A thermo-structural analysis at maximum engine load was carried out for all these piston models. Based on these data, a conclusion was made, whether the use of additive manufacturing was justified over the use of the conventional subtractive methods.
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|
|
Development and influence of the weight of cars and motorcycles
Valtrová, Martina ; Fojtášek, Jan (referee) ; Zháňal, Lubor (advisor)
This bachelor's thesis contains the description of the evolution of weight of automobiles and motorcycles. The first chapter contains a description of automobile dynamics and the influence of weight on dynamic properties of a vehicle. To describe the evolution of weight better, there are more detailed descriptions of weight evolutions of certain types of vehicles. The research of historical evolution and technology used today serves as the basis for the main outcome of this thesis, which is a prediction of the future development. This is the content of the last chapter.
|
|
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Bibliography of the review Proměny (Metamorphoses) from 1964 to 1979.
Valtrová, Martina ; Holý, Jiří (advisor) ; Merhaut, Luboš (referee)
ABSCTRACT The present thesis deals with the magazine Proměny, quarterly of The Society for Science and Arts, mapping the first seven years of its existence (1964-1970), i.e. the period under the editorship of Ladislav Radimský. The original plan was to create an annotated bibliography for the first fifteen volumes; however, it became obvious during the research that the amount of the material would largely exceed the length of a bachelor thesis. The commentary focuses on the years 1964-1970 as well; nevertheless, it also briefly outlines the whole time span of the magazine's publication as well as the whole existence of The Society for Science and Arts. The thesis analyzes Proměny in the light of the historical and cultural context, comparing it with other exile journals. The main part of the thesis is the annotated bibliography, accompanied with the author and subject indexes.
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