TAILIEUCHUNG - Optimum problem of piezoelectric laminated composite plate using genetic algorithm

The finite element model based on First Shear Displacement Theory to study the mechanical and electrical behaviors of cantilever laminated composite plate bonded piezoelectric patches on surface is presented. A nine-node isoparametric rectangular element with 5 degrees of freedom for the generalized displacements and 2 electrical degrees of freedom at each node is used. Optimization techniques based on genetic algorithm (GAs) are applied in order to maximize the piezoelectric actuator efficiency, improve the structural performance. | Vietnam Journal of Mechanics, VAST, Vol. 31, No. 2 (2009), pp. 87 - 96 OPTIMUM PROBLEM OF PIEZOELECTRIC LAMINATED COMPOSITE PLATE USING GENETIC ALGORITHM Le Kim Ngoc 1 , Tran Ich Thiuh 2 1 2 Viet Nam Electricity, Hanoi University of Technology Abstract. The finite element model based on First Shear Displacement Theory to study the mechanical and electrical behaviors of cantilever laminated composite plate bonded piezoelectric patches on surface is presented. A nine-node isoparametric rectangular element with 5 degrees of freedom for the generalized displacements and 2 electrical degrees of freedom at each node is used. Optimization techniques based on genetic algorithm (GAs) are applied in order to maximize the piezoelectric actuator efficiency, improve the structural performance. The illustrative examples and results of the appropriate applied voltages, position of bonded piezoelectric actuator fiber angle to achieve the desired displacement of the cantilever composite plate are presented. 1. INTRODUCTION Base on the direct piezoelectric effect and converse piezoelectric effect, in the recent years, there has been an increase in the developments of the laminated composite plates integrated with piezoelectric materials. The composite constructures are bonded or embedded with piezoelectric layers or patches can greatly enhance the performance of existing structures such as sensory, adapting with static or dynamic responses as well as many application such as the shape control, nanopositioning, precision positioning . etc. In order to search "best 11 results in static/ dynamic control for structure with integrated piezoelectric actuators, many techniques are applied to solve this problem. The optimum problems are raised. Brij N. Agrawal et al. (1997) [1] used and improved available computer program to solve optimum problem on adaptive antenna shape control using piezoelectric actuators with the goal to find the optimum actuator voltage. Crist6vao

• Sinh học
• Vietnam Journal of Mechanics
• Piezoelectric laminated composite plate using genetic algorithm
• The generalized displacements
• Piezoelectric laminated composite plate
• The piezoelectric actuator efficiency
• Dang Dinh Ang
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