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Design of test rig for long-term testing of couplings intended for railroad applications
Machálek, Ondřej ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The master thesis deals with design of test rig for long-term testing of coupling appointed to railway vehicles. At first, there is made a brief research which is related to railway coupling used for transmitting a torque. This is followed by an analysis of the most used power devices to derive real loads conditions of tested couplings. There is chosen the most appropriate conception based on made analysis and it is followed by the description of designed components. There is made a verification of modal properties non-purchased components which is necessary part of the thesis. Numerical modal analysis was performed in ANSYS Workbench software. In the end of the thesis there are included stress-strain analysis of the chosen designed components.
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Design of a test rig for the development of gears for passenger car applications
Běloušek, Ondřej ; Řehák, Kamil (referee) ; Czakó, Alexander (advisor)
This thesis is aimed to design of test rig which serves for measuring of vibro-acoustic characteristics of gears used in automotive gearboxes. In the theoretical part, the basic principles of initiated vibrations caused by gear meshing are described, especially due to transmission error as an important parameter. Next part of the paper is dedicated to description of experimental approach used in measuring of this characteristic and evaluation of used conceptual designs is also included. Own designed closed loop test rig allows to measure static transmission error of various sizes of gears even if the shafts are not parallel under the specific operating range. The main part of the design is measuring bench, whose developmental phases are shown, and which carries all important components for the measurement. Thesis also includes modal analysis of those constructions performed in ANSYS Workbench. The main parts of closed loop are described in details and static structural analysis of torsional loading device is done. Final part of the thesis compares analytical versus numerical approach to calculate safety factor of the critical point of a chosen shaft.
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Test Rig Design Proposal for the Experimental Validation of Transmission Parameters in Closed Loop Torque Condition
Otipka, Václav ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
The thesis deals with the design of the experimental testing rig. Test rig is designed to measure NVH transmission parameters. First, basic knowledge of vibro-acoustic measurement is discussed. This is followed by an evaluation of the most commonly used power devices to derive real loads on measured gearboxes. In more detail, a back-to-back test rig is disassembled among other things. In the thesis are described two main components, which are composed of a connecting element and a test bench. Both components were optimized during the design due to their modal properties. Numerical modal analysis was performed in ANSYS Workbench software. The thesis also includes strength calculations performed using both numerical and analytical approaches. The indispensable result of the design work is the complete drawing documentation. Finally, measurements of vibrations and noise on the physically made connecting element assembly have been performed and subsequently evaluated.
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Design of a test rig for the development of gears for passenger car applications
Běloušek, Ondřej ; Řehák, Kamil (referee) ; Czakó, Alexander (advisor)
This thesis is aimed to design of test rig which serves for measuring of vibro-acoustic characteristics of gears used in automotive gearboxes. In the theoretical part, the basic principles of initiated vibrations caused by gear meshing are described, especially due to transmission error as an important parameter. Next part of the paper is dedicated to description of experimental approach used in measuring of this characteristic and evaluation of used conceptual designs is also included. Own designed closed loop test rig allows to measure static transmission error of various sizes of gears even if the shafts are not parallel under the specific operating range. The main part of the design is measuring bench, whose developmental phases are shown, and which carries all important components for the measurement. Thesis also includes modal analysis of those constructions performed in ANSYS Workbench. The main parts of closed loop are described in details and static structural analysis of torsional loading device is done. Final part of the thesis compares analytical versus numerical approach to calculate safety factor of the critical point of a chosen shaft.
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Design of test rig for long-term testing of couplings intended for railroad applications
Machálek, Ondřej ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The master thesis deals with design of test rig for long-term testing of coupling appointed to railway vehicles. At first, there is made a brief research which is related to railway coupling used for transmitting a torque. This is followed by an analysis of the most used power devices to derive real loads conditions of tested couplings. There is chosen the most appropriate conception based on made analysis and it is followed by the description of designed components. There is made a verification of modal properties non-purchased components which is necessary part of the thesis. Numerical modal analysis was performed in ANSYS Workbench software. In the end of the thesis there are included stress-strain analysis of the chosen designed components.
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|
|
Test Rig Design Proposal for the Experimental Validation of Transmission Parameters in Closed Loop Torque Condition
Otipka, Václav ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
The thesis deals with the design of the experimental testing rig. Test rig is designed to measure NVH transmission parameters. First, basic knowledge of vibro-acoustic measurement is discussed. This is followed by an evaluation of the most commonly used power devices to derive real loads on measured gearboxes. In more detail, a back-to-back test rig is disassembled among other things. In the thesis are described two main components, which are composed of a connecting element and a test bench. Both components were optimized during the design due to their modal properties. Numerical modal analysis was performed in ANSYS Workbench software. The thesis also includes strength calculations performed using both numerical and analytical approaches. The indispensable result of the design work is the complete drawing documentation. Finally, measurements of vibrations and noise on the physically made connecting element assembly have been performed and subsequently evaluated.
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