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Study of lubricant film formation in textured conformal contacts
Plachý, Ladislav ; Dzimko, Marián (referee) ; Omasta, Milan (advisor)
The aim of this diploma thesis is to describe mechanisms involved in a lubricant film formation in textured conformal contacts. For exploring of the lubricant film formation, the method of optical interferometry is implemented on a pin-on-disc tribometer. That allows to study an influence of a texture on lubricant film thickness and coefficient of friction of textured samples. These samples have different parameters of a texture. On the basis of these effects and the visual image of the contact, the flow of lubricant in the contact area is described. Shallow dimples lead to larger film thickness in elasto-hydrodynamic lubrication regime. They act like a lubricant reservoir. Deep dimples positively affect film thickness in hydrodynamic lubrication regime, where the effect of shallow dimples descend. During experiments, the formation of a cavitation is observed. The cavitation causes a starvation of dimples in many cases. This leads to reducing of the lubricant film thickness. This effect can be eliminated by appropriate parameters of texture in operational conditions of elements.
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Design and manufacturing of patented bowling ball equipped by submerging grasp
Plachý, Ladislav ; Nohál, Libor (referee) ; Nevrlý, Josef (advisor)
The purpose of this bachelor thesis is design of mechanical elaboration and manufacturing of patented bowling ball equipped by submerging grasp. The introduction is about given task and it shows a possible solution. In the next part of thesis are described different mechanisms which can be used inside of the ball. Third part is about design of every single component, choice of its material and about other properties which are necessary for the correct function of suitable system.
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The family house with a construction office
Plachý, Ladislav ; Ing.Radek Sedlák (referee) ; Beneš, Petr (advisor)
The object of the dissertation is a family house with a construction office, standalone, without cellaring, it is the two-floor family house and the single-storey construction office. A construction system is the wall one. The objects are based on strip footings, carrying walls are made from ceramic bricks, ceilings are from ceramic beams and blocks, there is a ferroconcrete stair, a roof is flat.
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Study of lubricant film formation in textured conformal contacts
Plachý, Ladislav ; Dzimko, Marián (referee) ; Omasta, Milan (advisor)
The aim of this diploma thesis is to describe mechanisms involved in a lubricant film formation in textured conformal contacts. For exploring of the lubricant film formation, the method of optical interferometry is implemented on a pin-on-disc tribometer. That allows to study an influence of a texture on lubricant film thickness and coefficient of friction of textured samples. These samples have different parameters of a texture. On the basis of these effects and the visual image of the contact, the flow of lubricant in the contact area is described. Shallow dimples lead to larger film thickness in elasto-hydrodynamic lubrication regime. They act like a lubricant reservoir. Deep dimples positively affect film thickness in hydrodynamic lubrication regime, where the effect of shallow dimples descend. During experiments, the formation of a cavitation is observed. The cavitation causes a starvation of dimples in many cases. This leads to reducing of the lubricant film thickness. This effect can be eliminated by appropriate parameters of texture in operational conditions of elements.
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Design and manufacturing of patented bowling ball equipped by submerging grasp
Plachý, Ladislav ; Nohál, Libor (referee) ; Nevrlý, Josef (advisor)
The purpose of this bachelor thesis is design of mechanical elaboration and manufacturing of patented bowling ball equipped by submerging grasp. The introduction is about given task and it shows a possible solution. In the next part of thesis are described different mechanisms which can be used inside of the ball. Third part is about design of every single component, choice of its material and about other properties which are necessary for the correct function of suitable system.
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|
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The family house with a construction office
Plachý, Ladislav ; Ing.Radek Sedlák (referee) ; Beneš, Petr (advisor)
The object of the dissertation is a family house with a construction office, standalone, without cellaring, it is the two-floor family house and the single-storey construction office. A construction system is the wall one. The objects are based on strip footings, carrying walls are made from ceramic bricks, ceilings are from ceramic beams and blocks, there is a ferroconcrete stair, a roof is flat.
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