TY - GEN
T1 - Wind loads and control of flexible structures embedded in a turbulent boundary layer
T2 - 21st International Congress on Sound and Vibration 2014, ICSV 2014
AU - Friedland, Ori
AU - Troshin, Victor
AU - Seifert, Avraham
N1 - Publisher Copyright:
Copyright © (2014) by the International Institute of Acoustics & Vibration All rights reserved.
PY - 2014
Y1 - 2014
N2 - We investigate experimentally the flow around a flexible rectangular thin plate positioned normal to the wind direction and embedded in a thick turbulent boundary layer. The purpose of the study is to reduce the plate oscillations caused by unsteady wind loads. Two methods were tested. First we used mechanical Piezo-electric actuators attached to the plate while the second method used fluidic actuators around the plate edges. The two methods were applied with similar closed-loop control principles: Strain Gauge (SG) sensors captured the plate's oscillations and a simple phase-lag and gain was used to attenuate the oscillations. In the current paper we focus on the mechanical attenuation mechanism. Two Piezo electric elements were bonded to the plate close to its fixed end. The results show a reduction of 20-30% of the plate oscillation compared to the uncontrolled case. This stage is a reference case for the other part of the study that focuses on fluidic control.
AB - We investigate experimentally the flow around a flexible rectangular thin plate positioned normal to the wind direction and embedded in a thick turbulent boundary layer. The purpose of the study is to reduce the plate oscillations caused by unsteady wind loads. Two methods were tested. First we used mechanical Piezo-electric actuators attached to the plate while the second method used fluidic actuators around the plate edges. The two methods were applied with similar closed-loop control principles: Strain Gauge (SG) sensors captured the plate's oscillations and a simple phase-lag and gain was used to attenuate the oscillations. In the current paper we focus on the mechanical attenuation mechanism. Two Piezo electric elements were bonded to the plate close to its fixed end. The results show a reduction of 20-30% of the plate oscillation compared to the uncontrolled case. This stage is a reference case for the other part of the study that focuses on fluidic control.
UR - http://www.scopus.com/inward/record.url?scp=84922612377&partnerID=8YFLogxK
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AN - SCOPUS:84922612377
T3 - 21st International Congress on Sound and Vibration 2014, ICSV 2014
SP - 3513
EP - 3520
BT - 21st International Congress on Sound and Vibration 2014, ICSV 2014
PB - International Institute of Acoustics and Vibrations
Y2 - 13 July 2014 through 17 July 2014
ER -