Theoretical and Experimental Study of Turbine Discs under Severe Spin and Temperature Fluctuations

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Letafati, Mohammad Hassan | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45614 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Durali, Mohammad
Abstract:
Gas turbine discs must be tested before they are installed in an engine for their mechanical properties and resistance to crack growth. Such test is usually done in a device called Spin Tester in which high rotational speed and temperature fluctuations can be applied to a disc. In this project a plug-in software is developed by which life of gas turbine discs under sever fluctuations of rotating speed and temperature can be assessed. The tests performed in the software are; stress analysis, fatigue analysis, crack initiation point, and finally 3-D fatigue crack growth path. The software is written using Python programming in ABAQUS. The software adds a sub-menu in ABAQUS Plugins as "Engine Disc Analysis Software" and provides a user friendly interface for the above mentioned analysis. A spin test device is to be built by which the results of this software will be validated and the software will be calibrated
Keywords:
Turbine Disc ; Crack Growth ; Experimental Investigation ; Thermal Variation ; Spin Test

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