Shape control and damage identification of beams using piezoelectric actuation and genetic optimization

被引：47
|
作者：
Hadjigeorgiou, E. P. [1 ]
Stavroulakis, G. E.
Massalas, C. V.
机构：
[1] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece
[2] Tech Univ Crete, Dept Prod Engn & Management, GR-73100 Khania, Greece
来源：
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | 2006年 / 44卷 / 07期
关键词：
adaptronic structures; laminated piezoelectric beams; finite element modelling; shape control; damage identification;
D O I：
10.1016/j.ijengsci.2006.02.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with the shape control of beams under general loading conditions, using piezoelectric patch actuators that are surface bonded onto beams to provide the control forces. The mathematical formulation of the model is based on the shear deformation beam theory (Timoshenko theory) and the linear theory of piezoelectricity. The numerical solution of the model is based on the development of superconvergent (locking-free) finite elements using the form of the exact solution of the Timoshenko, beam theory and Hamilton's principle. The optimal values for the locations of the piezo-actuators are determined and optimal voltages for shape control are obtained for cantilever beams by using a genetic optimization procedure. Finally, a simplified related damage identification problem is formulated and solved using static data and genetic optimization. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：409 / 421
页数：13
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