Static analysis of wind blades based on weight loads to the gravitation and the centrifugal forces Using Finite Element
Department of Mechanical and Production Engineering, Enugu State University of Science and Technology Enugu, Enugu Nigeria.
Research Article
International Journal of Engineering Research Updates, 2024, 07(02), 001–012.
Article DOI: 10.53430/ijeru.2024.7.2.0044
Publication history:
Received on 04 August 2024; revised on 16 October 2024; accepted on 18 October 2024
Abstract:
Static analysis of wind turbine blades that convert kinetic energy using wind to electrical power has been analyzed using Ansys model. The geometry was imported in ANSYS workbench 2020R1, where the material was changed to Epoxy E-Glass Wet. The mesh independence that occurred at 800 and 600 element sizes and an element size of 800 was chosen for subsequent static analysis. The static analysis shows that the total deformation and von Mises stress of the wind turbine blade was improved at both the vertical position and the horizontal position by 40.0% and 38.61%, respectively. Besides, the static analysis showed an almost linear mode shape increased from mode lines. Nevertheless, Campbell's diagram showed that resonance vibration occurred at an amplitude of 5.5x106Pa with a corresponding frequency of 5Hz, which gave a rotational speed of 262.4x106 rpm. This shows that the impulse force is better applied in wind turbine blade transient analysis at a lower von Mises stress to attain a quicker damping response steady-state, which favors wind turbine blade analysis. Overall, the wind turbine blade is better designed at a vertical position to allow better deformation stress at a static position. Conversely, the von Mises stress showed 44.64% and 38.61% at horizontal and vertical positions. This also agrees with static total deformation, since stress is better managed at a lower percentage range.
Keywords:
Static; Wind-blade; Finite element; Loads Campell diagram
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