2 June، 2025
Master’s Thesis in Department of Mechanical Engineering on “The Effect of Centrifugal Forces of Gas Turbine Blades on Stress Concentration”
Department of Mechanical Engineering at College of Engineering, University of Mosul, held a master’s thesis defense for the thesis titled “The Effect of Centrifugal Forces of Gas Turbine Blades on Stress Concentration,” presented by (Mohammed Talal Mohammed) on Monday, June 2, 2025.
The session was attended by Asst. Prof. Dr. Omar Mohammed Hamdoon, Dean of College of Engineering, and Asst. Prof. Dr. Ayman Talib Hameed, Assistant Dean for Scientific Affairs.
The thesis focused on a theoretical and numerical analysis of the influence of centrifugal and thermal stresses on gas turbine blades at the Mosul Power Plant, utilizing ANSYS 2024 software. A realistic model of the blade was constructed, and its behavior was analyzed at various rotational speeds (5100, 7000, and 9000 RPM).
The results demonstrated that centrifugal forces had the most significant impact on stress distribution, particularly at the blade root. It was also shown that deformations and equivalent stresses increased as the rotational speed increased. The study indicated that thermal stresses further contribute to the overall loading on the blade; however, at 5100 RPM, the blade remains within the elastic range.
The thesis concluded that higher speeds lead to a substantial increase in deformation and stresses, reducing the safety factor and increasing the risk of failure. Therefore, the research recommended adherence to the safe operational speed of 5100 RPM to ensure the structural integrity and performance efficiency of the blades.
