Abstract
The application of flat plates to the field of wind harvesting requires a lot of research toward the understanding of the flutter behavior of the plates. There are shortages of articles that discuss the effect of varying the angles of attack to the flutter speed of a flat plate. This research aims to conduct a basic experimental research on the effect of relative position of a thin-flat plates to the direction of the air flow to its flutter speed. In this study, a thin-flat plate was placed in a subsonic wind tunnel to test its flutter speed. The position of the plate was varied in various angles of attack. The effect of the angles of attack to the flutter speed was observed.
Highlights
Flutter is one of the dynamic phenomena of aeroelasticity in which aerodynamic forces act together with the natural modes of vibration of a structure to produce periodic or quasi-periodic motion
The results showed that the flutter speed decreased with increasing angle of incidence
The effect of the angle of attack on flutter speed was observed for three sizes of copper thin-flat plates in this study
Summary
Flutter is one of the dynamic phenomena of aeroelasticity in which aerodynamic forces act together with the natural modes of vibration of a structure to produce periodic or quasi-periodic motion. Aerodynamic force functions as input energy to structural vibrations which, if not damped by the system, will increase the vibrations in the end which will cause structural failure (failure). Aeroelasticity is the science that discusses the interaction between inertial, elasticity and aerodynamic forces in a structure. Aeroelasticity is divided into two, namely static aeroelasticity and dynamic aeroelasticity. The static aeroelasticity discusses the interaction between aerodynamic forces and elastic forces on a structure. In the dynamic of aerelasticity, the effects of inertial forces are added to the discussion
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