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Finite element analysis design and optimization of an adaptive circular composite panel for vibration suppression

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Item Summary

Title:Finite element analysis design and optimization of an adaptive circular composite panel for vibration suppression
Authors:Sakagawa, Randy
Keywords:Vibration (Aeronautics) -- Damping
Artificial satellites -- Attitude control systems
Date Issued:2006
Abstract:The objective of this work is to design a circular adaptive composite panel with optimized embedded piezoelectric sensor and actuator patches in terms of their location and configuration for active vibration suppression application. Piezoelectric sensors and actuators embedded in the composite panel create a lightweight smart structure with increased structural efficiency and thermal stability. in addition to the ability to monitor and respond to external stimuli to control shape, properties, and dynamic responses of the structure. The panel is designed to be the mounting surface for an active composite platform to be used in intelligent thruster vector control applications for satellites. A triangular piece, made of steel, with three circular-shape connections at the three vertices, simulating the base of the thruster, is attached to the circular adaptive composite panel to provide a more realistic boundary condition. The developed finite element model is employed to determine the optimum number of composite layers based on the voltage required to deliver maximum possible vibration suppression for the plate. A direct approach using Control Design Charts is employed for active vibration suppression. The vibration suppression techniques used in this work are the direct Constant Voltage (CV) and direct Corresponding Voltage (COV) schemes.
Description:Thesis (M.S.)--University of Hawaii at Manoa, 2006.
Includes bibliographical references (leaves 92-93).
x, 93 leaves, bound ill. 29 cm
Rights:All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections: M.S. - Mechanical Engineering

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