Hybrid Constrained Optimization for Design of a Piezoelectric Composite Disk Controlling Thermal Stress

• ELSAWAF Ahmed

  Graduate School of Shimane University

• ASHIDA Fumihiro

  Shimane University

• SAKATA sei-ichiro

  Shimane University

Bibliographic Information

Other Title

• 熱応力を制御する圧電複合円板の設計のための制約条件付きハイブリッド最適化

Abstract

We consider a composite disk consisting of a structural layer and a piezoelectric layer with electrodes. When a heating temperature acts on the structural layer, the maximum thermal stress in the structure layer can be controlled by applying appropriate voltages to electrodes. Then the piezoelectric layer thickness and the electrode arrangement exert a great influence upon the suppression ratio of the maximum thermal stress. However, it is difficult to determine the dimensions of the piezoelectric layer and electrodes together with the applied voltages by solving an optimization problem, because sensitivities of the dimensional variables are very different from those of the voltage variables. Therefore, a hybrid optimization technique is proposed in order to demonstrate the function of stress control to the fullest extent possible. The dimensions are determined by employing the particle swarm optimization technique, whereas the applied voltages are determined using the simplex method

Journal

• NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan

  NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 60 (0), 248-248, 2011

  National Committee for IUTAM

Keywords

• Elasticity
• Thermal Stress
• Stress Control
• Optimum Design
• Piezoelectric Actuation
• Composite Disk
• Smart Structure

Details

• CRID: 1390001205593195776
• NII Article ID: 130004604806
• DOI: 10.11345/japannctam.60.0.248.0
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed