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Plate oscillation mode at M = 1.0 (corresponds to a borderline state between divergence and single mode flutter)

Project: Visualization of Mechanical Processes

Journal: Visualization of Mechanical Processes: An International Online Journal

Article: EVOLUTION OF NONLINEAR PANEL FLUTTER OSCILLATIONS

Topics: Gas dynamics, Aerodynamics, Supersonic flows, Visualization techniques, Numerical methods, Stability, Wind Engineering

Elastic plate behavior in a uniform flow is considered. Mach number M = 1 corresponds to a borderline state between divergence and single mode flutter. The plate oscillates with a frequency 24 Hz, which is more than two times lower than the first natural frequency. The plate motion is delayed in states of maximum and minimum deflection. Oscillation mode shape has a form of a traveling wave.

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