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Fatigue analysis for the first row of blades of a micro turbine under full loading cycle using transient modal analysis

In advanced modern turbines, the temperature of the turbine's first blade row which is called the turbine's hot part, increases almost as 1000℃. These blades must operate for long periods of time. | Fatigue analysis for the first row of blades of a micro turbine under full loading cycle using transient modal analysis Engineering Solid Mechanics 3 2015 145-156 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Fatigue analysis for the first row of blades of a micro turbine under full loading cycle using transient modal analysis Ali Soleimania Saeid Shahrakib and Hosein Bisadia a Iran University of Science and Technology Narmak Tehran Iran b School of Mechanical Engineering University of Zabol Iran ARTICLE INFO ABSTRACT Article history In advanced modern turbines the temperature of the turbine s first blade row which is called Received 6 January 2015 the turbine s hot part increases almost as 1000 . These blades must operate for long periods Accepted 20 May 2015 of time. Since the main failure reason of the parts operating under high temperature and cyclic Available online loading conditions is fatigue as well as creeping phenomena acquiring an accurate estimate of 22 May 2015 these blades lifetime under creeping and fatigue interactions is very necessary for theoretical Keywords First row of blades and practical requirements. The fatigue of the first blade row of the micro turbine TRI60 is Micro turbine analyzed in this study. For the purpose of estimating the fatigue lifetime of turbine and motor Full loading cycle heat transfer of blades as well as thermal stress is analyzed at first via ABAQUS software. Consequently a fatigue analysis under full cycle and within the interval of to is performed using Smith-Watson-Taper algorithm and transient modal analysis via Fe-safe software. 2015 Growing Science Ltd. All rights reserved. 1. Introduction One of the most major issues concerning warplanes during their flight time is the turbine blades failure due to creeping-fatigue effect. When the blades at unusual high temperatures are put under high stress they suffer from creeping effect. At first surface micro .