OPTIMAL PLACEMENT OF PIEZOELECTRIC MACRO FIBER COMPOSITE PATCHES ON COMPOSITE PLATES FOR VIBRATION SUPPRESSION

Authors

  • EDUARDO PADOINA UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE
  • JUN SERGIO ONO FONSECA UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE, RS
  • EDUARDO ANDRÉ PERONDI UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE
  • ODAIR MENUZZI UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE

Keywords:

PARAMETRIC OPTIMIZATION, MACRO FIBER COMPOSITE, LQR OPTIMAL CONTROL, LAMINATED COMPOSITE MATERIAL.

Abstract

THIS WORK PRESENTS A NEW METHODOLOGY FOR THE PARAMETRIC OPTIMIZATION OF
PIEZOELECTRIC ACTUATORS INSTALLED IN LAMINATED COMPOSITE STRUCTURES, WITH THE
OBJECTIVE OF CONTROLLING STRUCTURAL VIBRATIONS. PROBLEM FORMULATION IS THE
OPTIMUM LOCATION OF A MACRO FIBER COMPOSITE (MFC) ACTUATOR PATCH, THROUGH
THE MAXIMIZATION OF THE CONTROLLABILITY INDEX. THE LINEAR QUADRATIC REGULATOR
(LQR) CONTROL IS USED. FOR THE STRUCTURAL ANALYSIS, THE MODELING OF THE
INTERACTION BETWEEN THE MFC AND THE STRUCTURE IS MADE CONSIDERING THE ACTIVE
MATERIAL AS ONE OF THE ORTHOTROPIC LAMINATE SHELL LAYERS. THE ACTUATION ITSELF IS
MODELED AS AN INITIAL STRAIN ARISING FROM THE APPLICATION OF AN ELECTRIC
POTENTIAL; THIS STRAIN DEFORMS THE REST OF THE STRUCTURE. THEREBY, MODELING THE
ELECTRIC FIELD AND THE ELECTROMECHANICAL COUPLING WITHIN THE ACTUATOR IS
AVOIDED BECAUSE THESE EFFECTS ARE CONSIDERED ANALYTICALLY. NUMERICAL
SIMULATIONS SHOW THAT THE STRUCTURAL MODEL PRESENTS GOOD AGREEMENT WITH
NUMERICAL AND EXPERIMENTAL RESULTS. FURTHERMORE, THE RESULTS SHOW THAT
OPTIMIZING THE LOCATION OF THE ACTUATOR IN THE STRUCTURE HELPS THE CONTROL
ALGORITHM TO REDUCE INDUCED STRUCTURAL VIBRATION.

Author Biographies

EDUARDO PADOINA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE

PROMEC - GRADUATE PROGRAM IN MECHANICAL ENGINEERING

JUN SERGIO ONO FONSECA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE, RS

ASSOCIATE PROFESSOR, DEPARTMENT OF MECHANICAL ENGINEERING

EDUARDO ANDRÉ PERONDI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE

ASSOCIATE PROFESSOR, DEPARTMENT OF MECHANICAL ENGINEERING

ODAIR MENUZZI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, PORTO ALEGRE

PROMEC - GRADUATE PROGRAM IN MECHANICAL ENGINEERING

Published

2015-02-03

Issue

Section

Special issue to Prof. Barcellos