Modeling the Vibrations of the Pale of a Wind

Abstract:

To combat climate change, there is growing support for the use of clean and sustainable energy, which will result in the reduction of greenhouse gas emissions. In recent years, in response to an increasing need for wind turbines in the field of energy, intended for the production of electricity, their size has increased. The effect of increasing the size of the machines, and in particular the size of the blades, led to the appearance of vibrational phenomena and the instability of aeroelastic origin (vibrations, noises). Basically, this work highlights the dynamic effects on a blade during its rotation taking into account, on the one hand, the mechanical forces (the centrifugal effect, the inertial effect) and, on the other hand, the aerodynamic effects. The blade, which is in motion, is subjected to three types of deformations: longitudinal, transverse and twisting. We were interested in the twisting and transverse vibrations, the equations we obtained with Hamilton's variational principle.

• Periodical: Applied Mechanics and Materials (Volume 896)
• Pages: 47-58
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.896.47
• Online since: February 2020
• Authors: Valeriu Ionică*, Dan Gheorghe Bagnaru, Ionuţ Daniel Geonea
• Keywords: Integral Transforms, Pale, Vibrations, Wind

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