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Stress analysis of the tree root of an aircraft engine turbine wheel
Čepica, Vojtěch ; Svoboda, Miroslav (referee) ; Chromek, Lukáš (advisor)
The main focus of the bachelor thesis is stress analysis of the tree root of an aircraft engine turbine wheel. First part is dedicated to the issue of aircraft engine and various kinds of mounting the rotor blades. Next chapters of the thesis involve the calculation itself. The known equatations have been used in case of analytical calculation whereas the ANSYS Workbench program based on final element method has been used for the numerical calculations. Finally I compared both approaches in conclusion of the thesis.
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Stress-strain analysis of the axial turbine of turboprop engine
Kolárik, Matej ; Ing. Petr Navrátil, Ph.D (referee) ; Skalka, Petr (advisor)
This diploma thesis deals with a creation and subsequent analysis of the computational model of the turboprop engine's turbine designed by Prvá Brněnská Strojírna Velká Bíteš. The computational model is created and solved in the finite element model system ANSYS. A cyclic symmetry is taken into account during the solution. The static analysis of the turbine was carried out in objective to quatify prestress effects which are caused by a rotation, higher temperature and an excitation from stator blades. These prestress effects were used in the modal analysis of the turbine. Harmonic analysis were calculated to simulate an operation conditions and a resonance state. The results of these analysis indicate that the higher temperature has the biggest impact on the properties of the turbine. It is also shown, that during the operation of the engine the turbine runs in the mode which is not even close to the resonance state.
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Diesel Engine Turbochargers
Fňukal, Jan ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
This bachelor's thesis is specialized search dealing with diesel engine turbochargers. The work is divided into four main parts. The first part deals with positives of supercharging, history of turbochargers and principle of supercharging. The second part describes particular construction solution. The third part is focused on systems of regulation. The last part attends to development trends of turbochargers.
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Production of turbine wheel with investment casting
Fendrich, Tomáš ; Ostratický, Marek (referee) ; Myška, Martin (advisor)
TThis bachelor thesis is devoted to the production of turbine wheels by the method investment casting. It mensions the basic principles of investment casting, description of production of molds for wax models, choice of wax blends, materials used in the manufacturing of shells and description of the most used materials for casting of the turbine wheel itself. Also a short overwiev of vacuum casting technologies is presented. In the end of the thesis turbine wheel is casted from material A 890 Gr4A.
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Design of thread connection of turbocharger turbine wheel and rotor shaft
Oboňa, Matúš ; Novotný, Pavel (referee) ; Dlugoš, Jozef (advisor)
This diploma thesis is focused on the concept of threaded connection of the turbine wheel and shaft. At the beginning are described current welding methods of the turbine wheel and shaft connections as well as methods of the compressor wheel and shaft connections. Four possible concepts were designed and evaluated, and the best concept was chosen. For this concept was calculated tightening torque and concept was evaluated in terms of turbocharger operating conditions.
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Modal analysis of turbine wheel for aircraft engine
Drahý, Jan ; Nehybka, Jindřich (referee) ; Malenovský, Eduard (advisor)
The master thesis deals with modal analysis of turbine wheel of aircraft engine. The first part is concerned with the modal analysis of the computational model of turbine wheel and separated turbine blade using the cyclic symmetry of the ANSYS software. This part of the thesis set the task of determining the natural frequency depending on the operating parameters of the motor. The second part of the thesis occupies with the experimental simulation of the task. The results of experimental simulation are verified and compared with the results from the computational modal analysis. The goal is to create a Campbell diagram and to determine the intervals of the critical revolution of the turbine wheel.
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Design of thread connection of turbocharger turbine wheel and rotor shaft
Oboňa, Matúš ; Novotný, Pavel (referee) ; Dlugoš, Jozef (advisor)
This diploma thesis is focused on the concept of threaded connection of the turbine wheel and shaft. At the beginning are described current welding methods of the turbine wheel and shaft connections as well as methods of the compressor wheel and shaft connections. Four possible concepts were designed and evaluated, and the best concept was chosen. For this concept was calculated tightening torque and concept was evaluated in terms of turbocharger operating conditions.
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Production of turbine wheel with investment casting
Fendrich, Tomáš ; Ostratický, Marek (referee) ; Myška, Martin (advisor)
TThis bachelor thesis is devoted to the production of turbine wheels by the method investment casting. It mensions the basic principles of investment casting, description of production of molds for wax models, choice of wax blends, materials used in the manufacturing of shells and description of the most used materials for casting of the turbine wheel itself. Also a short overwiev of vacuum casting technologies is presented. In the end of the thesis turbine wheel is casted from material A 890 Gr4A.
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Stress-strain analysis of the axial turbine of turboprop engine
Kolárik, Matej ; Ing. Petr Navrátil, Ph.D (referee) ; Skalka, Petr (advisor)
This diploma thesis deals with a creation and subsequent analysis of the computational model of the turboprop engine's turbine designed by Prvá Brněnská Strojírna Velká Bíteš. The computational model is created and solved in the finite element model system ANSYS. A cyclic symmetry is taken into account during the solution. The static analysis of the turbine was carried out in objective to quatify prestress effects which are caused by a rotation, higher temperature and an excitation from stator blades. These prestress effects were used in the modal analysis of the turbine. Harmonic analysis were calculated to simulate an operation conditions and a resonance state. The results of these analysis indicate that the higher temperature has the biggest impact on the properties of the turbine. It is also shown, that during the operation of the engine the turbine runs in the mode which is not even close to the resonance state.
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Modal analysis of turbine wheel for aircraft engine
Drahý, Jan ; Nehybka, Jindřich (referee) ; Malenovský, Eduard (advisor)
The master thesis deals with modal analysis of turbine wheel of aircraft engine. The first part is concerned with the modal analysis of the computational model of turbine wheel and separated turbine blade using the cyclic symmetry of the ANSYS software. This part of the thesis set the task of determining the natural frequency depending on the operating parameters of the motor. The second part of the thesis occupies with the experimental simulation of the task. The results of experimental simulation are verified and compared with the results from the computational modal analysis. The goal is to create a Campbell diagram and to determine the intervals of the critical revolution of the turbine wheel.
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