پديدآورندگان :
Talebitooti R. rtalebi@iust.ac.ir Associate Professor, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, 1684613114, Iran , Bakhshi N BSc student, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, 16846-13114, Iran , Amooie M. A. BSc student, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, 16846-13114, Iran , Darvish H. PhD student, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, 16846-13114, Iran
كليدواژه :
Passive Vibration Suppression , Nonlinear Motion of a Rotating Plate , Piezoelectric Patches , Piezoelectric Actuator.
چكيده فارسي :
Passive vibration control of rectangular rotating plates through piezoelectric
elements is studied in the present work. A recently developed linear modelling
approach, which takes the nonlinear effects of the motion of the plate into
account, is adapted as the framework for this study. A Piezoelectric patch
shunted by a RLC circuit is considered to be affixed to the plate in order to
damp the lateral vibrations. The Hamilton’s principle, which is used in this
work to derive the equations of motion of the plate, allows for the introduction
of the electromechanical couplings between the plate and the actuator into the
equations. The system of equations is solved with a program written in Matlab
script. The results of the proposed methods are validated with available data
in the literature. Frequency response function diagrams are plotted by using
the output signal from the piezoelectric sensor patch and are compared with
the undamped condition. It is shown that this method (using standard values
for the RLC circuit) can achieve up to 6% reduction in the resonant response,
which is believed to be quite significant since it is obtained merely through
dissipating the electrical energy in the RLC circuit without any external power
supply.
