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Feasibility of Using PZT Actuators to Study the Dynamic Behavior of a Rotating Disk due to Rotor-Stator Interaction
Presas Batlló, Alexandre; Egusquiza Estévez, Eduard; Valero Ferrando, M.del Carmen; Valentín Ruiz, David; Seidel, Ulrich
Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids; Universitat Politècnica de Catalunya. FLUIDS - Enginyeria de Fluids
In this paper, PZT actuators are used to study the dynamic behavior of a rotating disk structure due to rotor-stator interaction excitation. The disk is studied with two different surrounding fluids-air and water. The study has been performed analytically and validated experimentally. For the theoretical analysis, the natural frequencies and the associated mode shapes of the rotating disk in air and water are obtained with the Kirchhoff-Love thin plate theory coupled with the interaction with the surrounding fluid. A model for the Rotor Stator Interaction that occurs in many rotating disk-like parts of turbomachinery such as compressors, hydraulic runners or alternators is presented. The dynamic behavior of the rotating disk due to this excitation is deduced. For the experimental analysis a test rig has been developed. It consists of a stainless steel disk (r = 198 mm and h = 8 mm) connected to a variable speed motor. Excitation and response are measured from the rotating system. For the rotating excitation four piezoelectric patches have been used. Calibrating the piezoelectric patches in amplitude and phase, different rotating excitation patterns are applied on the rotating disk in air and in water. Results show the feasibility of using PZT to control the response of the disk due to a rotor-stator interaction.
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica
Sensors
rotating disk
PZT actuator
RSI
rotating excitation
resonance
VIBRATION RESPONSE
FEEDBACK-CONTROL
CIRCULAR PLATES
OPTIMIZATION
Enginyeria mecànica
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
Artículo
         

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