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Design of Piezoelectric Actuator With In-Plane Motion Using Topology Optimization

[+] Author Affiliations
Bin Zheng, Ching-Jui Chang, Hae Chang Gea

Rutgers, The State University of New Jersey, Piscataway, NJ

Paper No. DETC2007-34976, pp. 1343-1350; 8 pages
doi:10.1115/DETC2007-34976
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 33rd Design Automation Conference, Parts A and B
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4807-8 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

In this paper, topology optimization is used to study the design of piezoelectric actuator with in-plane motion. Two case studies are reported, the maximization of the in-plane motion toward a pre-defined direction and the maximization of the output force. In addition to volume density as design variable used in the conventional topology optimization, a new design variable, electrode density, is introduced to model the electrode topology on the piezoelectric plate surface. Based on the electrode potential model, the relation between the nodal potential and the electrode density is established. Sensitivity analyses of objective function with respect to volume density and electrode density are derived from the adjoint method. Examples of optimized piezoelectric actuators from the proposed method are presented and discussed.

Copyright © 2007 by ASME

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