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Design of an axial segment bearing simulator
Sedlačík, Jan ; Medlík, Jan (referee) ; Svoboda, Petr (advisor)
The bachelor thesis deals with an engineering design of a hydrodynamic thrust bearing simulator. The experimental apparatus has been designed to study the oil-film thickness between the pad and the glass disc. The goal of this thesis is to approach real operating conditions. The repeatability of the experimental conditions is provided by using transducers, way of loading and lubrication. The bachelor thesis contains a summary of rigs designed and measuring methods used, designs of constructional variations and a description of the engineered apparatus are also included.
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Experimental Study of Wheel Flange Lubrication
Frýza, Josef ; Dzimko, Marián (referee) ; Omasta, Milan (advisor)
This diploma thesis deals with the experimental study of the influence of operating conditions on the tribological aspects of the wheel flange and rail gauge contact. The wheel flange contact occurs when the vehicle moves on a curve track and it leads to severe up to catastrophic wear regime. For effective reduction of wear is important to apply a suitable amount of lubricant at appropriate intervals into the contact. The issue in this work comprehensively studies using of three laboratory apparatus and six methods that are theoretically and experimentally compared. Assessed are friction, wear, distribution and film thickness of lubricants for different contact conditions. The resulted amount of lubricant and interval of its application eliminates development of seizure at low consumption of lubricant. The understanding of mechanisms that occur in the wheel-rail contact not only helps to reduce operating costs and improved to energy efficiency of movement of vehicle on a track, but it is the basis for safe, reliable and ecological operation of rail transport.
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Experimental Study of Wheel Flange Lubrication
Frýza, Josef ; Dzimko, Marián (referee) ; Omasta, Milan (advisor)
This diploma thesis deals with the experimental study of the influence of operating conditions on the tribological aspects of the wheel flange and rail gauge contact. The wheel flange contact occurs when the vehicle moves on a curve track and it leads to severe up to catastrophic wear regime. For effective reduction of wear is important to apply a suitable amount of lubricant at appropriate intervals into the contact. The issue in this work comprehensively studies using of three laboratory apparatus and six methods that are theoretically and experimentally compared. Assessed are friction, wear, distribution and film thickness of lubricants for different contact conditions. The resulted amount of lubricant and interval of its application eliminates development of seizure at low consumption of lubricant. The understanding of mechanisms that occur in the wheel-rail contact not only helps to reduce operating costs and improved to energy efficiency of movement of vehicle on a track, but it is the basis for safe, reliable and ecological operation of rail transport.
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Design of an axial segment bearing simulator
Sedlačík, Jan ; Medlík, Jan (referee) ; Svoboda, Petr (advisor)
The bachelor thesis deals with an engineering design of a hydrodynamic thrust bearing simulator. The experimental apparatus has been designed to study the oil-film thickness between the pad and the glass disc. The goal of this thesis is to approach real operating conditions. The repeatability of the experimental conditions is provided by using transducers, way of loading and lubrication. The bachelor thesis contains a summary of rigs designed and measuring methods used, designs of constructional variations and a description of the engineered apparatus are also included.
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