Publisher: Cambridge University Press
E-ISSN: 1811-8216|30|6|643-650
ISSN: 1727-7191
Source: Journal of Mechanics, Vol.30, Iss.6, 2014-06, pp. : 643-650
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Abstract
The present work studies the torsional instability of an elastic structure due to hydrodynamic loads into the water current. The structure applied here is a rectangular flat plate with an elastic axis in its mid-chord length. The elasticity in the structure is provided by torsion spring. The flat plate has only one degree of freedom which is rotation in pure yaw about its axis. Through the free vibration experiments, it is observed that as the current speed exceeds a critical velocity, the flat plate becomes unstable. Two different chord lengths are tested and the instability occurs for a chord base range of Reynolds number, 0.75 × 105 < Re
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